Fujitsu MHT2040BH User Manual

C141-E203-01EN  
MHT2080BH, MHT2060BH, MHT2040BH  
DISK DRIVES  
PRODUCT MANUAL  
Revision History  
(1/1)  
Revised section (*1)  
(Added/Deleted/Altered)  
Edition  
01  
Date  
Details  
2004-02-27  
*1 Section(s) with asterisk (*) refer to the previous edition when those were deleted.  
C141-E203-01EN  
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Preface  
This manual describes MHT2080BH/ MHT2060BH/ MHT2040BH models of the  
MHT Series, 2.5-inch hard disk drives. These drives have a built-in controller  
that is compatible with the Serial-ATA interface.  
This manual describes the specifications and functions of the drives and explains  
in detail how to incorporate the drives into user systems. This manual assumes  
that the reader has a basic knowledge of hard disk drives and their  
implementations in computer systems.  
This manual consists of seven chapters and sections explaining the special  
terminology and abbreviations used in this manual:  
Overview of Manual  
CHAPTER 1  
This chapter gives an overview of the disk drive and describes their features.  
CHAPTER 2 Device Configuration  
Device Overview  
This chapter describes the internal configurations of the disk drive and the  
configuration of the systems in which they operate.  
CHAPTER 3  
Installation Conditions  
This chapter describes the external dimensions, installation conditions, and switch  
settings of the disk drive.  
CHAPTER 4  
This chapter describes the operation theory of the disk drive.  
CHAPTER 5 Interface  
This chapter describes the interface specifications of the disk drive.  
CHAPTER 6 Operations  
Theory of Device Operation  
This chapter describes the operations of the disk drive.  
Glossary  
The glossary describes the technical terms that need to be understood to read this  
manual.  
Acronyms and Abbreviations  
This section gives the meanings of the definitions used in this manual.  
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Preface  
Conventions for Alert Messages  
This manual uses the following conventions to show the alert messages. An alert  
message consists of an alert signal and alert statements. The alert signal consists  
of an alert symbol and a signal word or just a signal word.  
The following are the alert signals and their meanings:  
This indicates a hazardous situation could result in  
minor or moderate personal injury if the user does  
not perform the procedure correctly. This alert  
signal also indicates that damages to the product or  
other property may occur if the user does not perform  
the procedure correctly.  
This indicates information that could help the user  
use the product more efficiently.  
In the text, the alert signal is centered, followed below by the indented message.  
A wider line space precedes and follows the alert message to show where the alert  
message begins and ends. The following is an example:  
(Example)  
Data corruption: Avoid mounting the disk drive near strong  
magnetic sources such as loud speakers. Ensure that the disk drive  
is not affected by external magnetic fields.  
The main alert messages in the text are also listed in the “Important Alert Items.”  
Operating Environment  
This product is designed to be used in offices or computer rooms.  
Conventions  
An MHT series device is sometimes simply referred to as a "hard disk drive,"  
"HDD," "drive," or "device" in this document.  
Decimal numbers are represented normally.  
Hexadecimal numbers are represented as shown in the following examples:  
X'17B9', 17B9h, 17B9H, or 17B9H.  
Binary numbers are represented as shown in the following examples: 010 or 010b.  
Serial-ATA may be referred to as "SATA."  
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C141-E203-01EN  
Preface  
Attention  
Please forward any comments you may have regarding this manual.  
To make this manual easier for users to understand, opinions from readers are  
needed. Please write your opinions or requests on the Comment at the back of  
this manual and forward it to the address described in the sheet.  
Liability Exception  
“Disk drive defects” refers to defects that involve adjustment, repair, or  
replacement.  
Fujitsu is not liable for any other disk drive defects, such as those caused by user  
misoperation or mishandling, inappropriate operating environments, defects in the  
power supply or cable, problems of the host system, or other causes outside the  
disk drive.  
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Important Alert Items  
Important Alert Messages  
The important alert messages in this manual are as follows:  
A hazardous situation could result in minor or moderate personal  
injury if the user does not perform the procedure correctly. Also,  
damage to the product or other property, may occur if the user does not  
perform the procedure correctly.  
Task  
Alert message  
Page  
3-7  
Normal Operation  
Data corruption: Avoid mounting the disk drive near  
strong magnetic sources such as loud speakers. Ensure that  
the disk drive is not affected by external magnetic fields.  
Damage: Do not press the cover of the disk drive.  
Pressing it too hard, the cover and the spindle motor contact,  
which may cause damage to the disk drive.  
Static: When handling the device, disconnect the body  
ground (500 kor greater). Do not touch the printed circuit  
board, but hold it by the edges.  
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Manual Organization  
MHT2080BH, MHT2060BH,  
MHT2040BH  
• Device Overview  
• Device Configuration  
• Installation Conditions  
• Theory of Device Operation  
• Interface  
DISK DRIVES  
PRODUCT MANUAL  
(C141-E203)  
• Operations  
<This manual>  
MHT2080BH, MHT2060BH,  
MHT2040BH  
• Maintenance and Diagnosis  
• Removal and Replacement Procedure  
DISK DRIVES  
MAINTENANCE MANUAL  
(C141-F068)  
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Contents  
CHAPTER 1 Device Overview........................................................................1-1  
1.1 Features .....................................................................................................1-2  
1.1.1 Functions and performance...................................................................1-2  
1.1.2 Adaptability...........................................................................................1-2  
1.1.3 Interface ................................................................................................1-3  
1.2 Device Specifications................................................................................1-4  
1.2.1 Specifications summary........................................................................1-4  
1.2.2 Model and product number...................................................................1-5  
1.3 Power Requirements..................................................................................1-6  
1.4 Environmental Specifications ...................................................................1-8  
1.5 Acoustic Noise ..........................................................................................1-9  
1.6 Shock and Vibration..................................................................................1-9  
1.7 Reliability................................................................................................1-10  
1.8 Error Rate ................................................................................................1-11  
1.9 Media Defects..........................................................................................1-11  
1.10 Load/Unload Function...........................................................................1-11  
1.11 Advanced Power Management..............................................................1-12  
1.12 Interface Power Management (IPM).....................................................1-14  
1.12.1 Host-initiated Interface Power Management (HIPM)........................1-14  
1.12.2 Device-initiated Interface Power Management (DIPM)....................1-14  
CHAPTER 2 Device Configuration ................................................................2-1  
2.1 Device Configuration ................................................................................2-2  
2.2 System Configuration................................................................................2-3  
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2.2.1 SATA interface..................................................................................... 2-3  
2.2.2 Drive connection .................................................................................. 2-3  
CHAPTER 3  
Installation Conditions ............................................................. 3-1  
3.1 Dimensions ............................................................................................... 3-2  
3.2 Mounting................................................................................................... 3-3  
3.3 Connections with Host System................................................................. 3-9  
3.3.1 Device connector.................................................................................. 3-9  
3.3.2 Signal segment and power supply segment........................................ 3-10  
3.3.3 Connector specifications for host system........................................... 3-10  
3.3.4 SATA interface cable connection ...................................................... 3-11  
3.3.5 Note about SATA interface cable connection.................................... 3-11  
CHAPTER 4 Theory of Device Operation..................................................... 4-1  
4.1 Outline ...................................................................................................... 4-2  
4.2 Subassemblies........................................................................................... 4-2  
4.2.1 Disk ...................................................................................................... 4-2  
4.2.2 Spindle.................................................................................................. 4-2  
4.2.3 Actuator................................................................................................ 4-2  
4.2.4 Air filter................................................................................................ 4-3  
4.3 Circuit Configuration................................................................................ 4-3  
4.4 Power-on Sequence .................................................................................. 4-6  
4.5 Self-calibration ......................................................................................... 4-7  
4.5.1 Self-calibration contents....................................................................... 4-7  
4.5.2 Execution timing of self-calibration..................................................... 4-8  
4.5.3 Command processing during self-calibration ...................................... 4-8  
4.6 Read/write Circuit..................................................................................... 4-9  
4.6.1 Read/write preamplifier (PreAMP)...................................................... 4-9  
4.6.2 Write circuit.......................................................................................... 4-9  
4.6.3 Read circuit......................................................................................... 4-10  
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4.6.4 Digital PLL circuit ..............................................................................4-11  
4.7 Servo Control ..........................................................................................4-12  
4.7.1 Servo control circuit............................................................................4-12  
4.7.2 Data-surface servo format...................................................................4-14  
4.7.3 Servo frame format .............................................................................4-16  
4.7.4 Actuator motor control........................................................................4-17  
4.7.5 Spindle motor control..........................................................................4-18  
CHAPTER 5  
Interface .....................................................................................5-1  
5.1 Physical Interface ......................................................................................5-2  
5.1.1 Interface signals ....................................................................................5-2  
5.1.2 Signal interface regulation ....................................................................5-4  
5.1.2.1 Out of band signaling..........................................................................5-4  
5.1.2.2 Primitives descriptions......................................................................5-5  
5.1.3 Electrical specifications ........................................................................5-6  
5.1.4 Connector pinouts .................................................................................5-8  
5.2 Logical Interface........................................................................................5-9  
5.2.1 Communication layers ........................................................................5-10  
5.2.2 Outline of the Shadow Block Register................................................5-11  
5.2.3 Outline of the frame information structure (FIS)................................5-12  
5.2.3.1 FIS types ...........................................................................................5-12  
5.2.3.2 Register - Host to Device..................................................................5-12  
5.2.3.3 Register - Device to Host..................................................................5-13  
5.2.3.4 DMA Active - Device to Host ..........................................................5-13  
5.2.3.5 DMA Setup - Device to Host or Host to Device (Bidirectional)......5-14  
5.2.3.6 BIST Active - Bidirectional..............................................................5-15  
5.2.3.7 Data - Host to Device or Device to Host (Bidirectional)..................5-16  
5.2.4 Shadow block registers .......................................................................5-17  
5.3 Host Commands ......................................................................................5-22  
5.3.1 Command code and parameters..........................................................5-22  
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5.3.2 Command descriptions....................................................................... 5-25  
(1) RECALIBRATE (X’10’ to X’1F’)...........................................5-26  
(2) READ SECTOR(S) (X’20’ or X’21’)....................................5-27  
(3) READ LONG (X’22’ or X’23’) .............................................5-29  
(4) WRITE SECTOR(S) (X’30’ or X’31’) ...................................5-30  
(5) WRITE LONG (X’32’ or X’33’) .............................................5-32  
(6) WRITE VERIFY (X’3C’) .......................................................5-34  
(7) READ VERIFY SECTOR(S) (X’40’ or X’41’)......................5-36  
(8) SEEK (X’70’ to X’7F’) ............................................................5-38  
(9) EXECUTE DEVICE DIAGNOSTIC (X’90’)..........................5-39  
(10) INITIALIZE DEVICE PARAMETERS (X’91’) .....................5-40  
(11) DOWNLOAD MICROCODE (X’92’).....................................5-41  
(12) STANDBY IMMEDIATE (X’94’ or X’E0’)...........................5-43  
(13) IDLE IMMEDIATE (X’95’ or X’E1’).....................................5-44  
(14) STANDBY (X’96’ or X’E2’)...................................................5-45  
(15) IDLE (X’97’ or X’E3’).............................................................5-46  
(16) CHECK POWER MODE (X’98’ or X’E5’) ............................5-48  
(17) SLEEP (X’99’ or X’E6’).........................................................5-49  
(18) SMART (X’B0’).......................................................................5-50  
(19) DEVICE CONFIGURATION (X'B1') .....................................5-67  
(20) READ MULTIPLE (X’C4’).....................................................5-71  
(21) WRITE MULTIPLE (X’C5’)...................................................5-74  
(22) SET MULTIPLE MODE (X’C6’)............................................5-76  
(23) READ DMA (X’C8’ or X’C9’)................................................5-78  
(24) WRITE DMA (X’CA’ or X’CB’) ............................................5-80  
(25) READ BUFFER (X’E4’)..........................................................5-82  
(26) FLUSH CACHE (X’E7’) ........................................................5-83  
(27) WRITE BUFFER (X’E8’)........................................................5-84  
(28) IDENTIFY DEVICE (X’EC’)..................................................5-85  
(29) IDENTIFY DEVICE DMA (X’EE’).......................................5-86  
(30) SET FEATURES (X’EF’) ........................................................5-97  
(31) SECURITY SET PASSWORD (X’F1’).................................5-102  
(32) SECURITY UNLOCK(X’F2’)...............................................5-104  
(33) SECURITY ERASE PREPARE (X’F3’) ...............................5-106  
(34) SECURITY ERASE UNIT (X’F4’) .......................................5-107  
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(35) SECURITY FREEZE LOCK (X’F5’) ................................... 5-108  
(36) SECURITY DISABLE PASSWORD (X’F6’) ...................... 5-110  
(37) READ NATIVE MAX ADDRESS (X’F8’).......................... 5-112  
(38) SET MAX (X’F9’)................................................................. 5-113  
(39) READ SECTOR (S) EXT (X’24’)......................................... 5-119  
(40) READ DMA EXT (X’25’)..................................................... 5-120  
(41) READ NATIVE MAX ADDRESS EXT (X’27’).................. 5-121  
(42) READ MULTIPLE EXT (X’29’).......................................... 5-122  
(43) READ LOG EXT (X'2F')....................................................... 5-123  
(44) WRITE SECTOR (S) EXT (X’34’)....................................... 5-126  
(45) WRITE DMA EXT (X’35’)................................................... 5-127  
(46) SET MAX ADDRESS EXT (X’37’) ..................................... 5-128  
(47) WRITE MULTIPLE EXT (X’39’) ........................................ 5-130  
(48) WRITE LOG EXT (X'3F')..................................................... 5-131  
(49) READ VERIFY SECTOR (S) EXT (X’42’) ........................ 5-133  
(50) FLUSH CACHE EXT (X’EA’) ............................................ 5-134  
(51) WRITE MULTIPLE FUA EXT (X'CE') ............................... 5-135  
(52) WRITE DMA FUA EXT (X'3D').......................................... 5-136  
(53) READ FP DMA QUEUED (X'60')........................................ 5-137  
(54) WRITE FP DMA QUEUED (X'61')...................................... 5-138  
5.3.3 Error posting ..................................................................................... 5-139  
5.4 Command Protocol ............................................................................... 5-141  
5.4.1 Non-data command protocol ............................................................ 5-141  
5.4.2 PIO data-in command protocol......................................................... 5-143  
5.4.3 PIO data-out command protocol....................................................... 5-144  
5.4.4 DMA data-in command protocol...................................................... 5-146  
5.4.5 DMA data-out command protocol.................................................... 5-147  
5.4.6 Native Command Queuing protocol................................................. 5-148  
5.5 Power-on and COMRESET .................................................................. 5-151  
CHAPTER 6 Operations................................................................................. 6-1  
6.1 Reset and Diagnosis.................................................................................. 6-2  
6.1.1 Response to power-on........................................................................... 6-2  
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6.1.2 Response to COMRESET .................................................................... 6-4  
6.1.3 Response to a software reset ................................................................ 6-5  
6.2 Power Save ............................................................................................... 6-6  
6.2.1 Power save mode.................................................................................. 6-6  
6.2.2 Power commands ................................................................................. 6-8  
6.3 Interface Power Save................................................................................ 6-9  
6.3.1 Power save mode of the interface ........................................................ 6-9  
6.4 Read-ahead Cache .................................................................................. 6-11  
6.4.1 Data buffer structure........................................................................... 6-11  
6.4.2 Caching operation............................................................................... 6-12  
6.4.3 Using the read segment buffer ........................................................... 6-14  
6.4.3.1 Miss-hit............................................................................................. 6-14  
6.4.3.2 Sequential hit.................................................................................... 6-15  
6.4.3.3 Full hit .............................................................................................. 6-15  
6.4.3.4 Partial hit .......................................................................................... 6-17  
6.5 Write Cache ............................................................................................ 6-18  
6.5.1 Cache operation.................................................................................. 6-18  
Glossary ....................................................................................................... GL-1  
Acronyms and Abbreviations ........................................................................ AB-1  
Index ..................................................................................................................IN-1  
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Illustrations  
Figures  
Figure 1.1 Negative voltage at +5 V when power is turned off ............................1-6  
Figure 1.2 Current fluctuation (Typ.) at +5 V when power is turned on...............1-8  
Figure 2.1 Disk drive outerview ............................................................................2-2  
Figure 2.2 Drive system configuration ..................................................................2-3  
Figure 3.1 Dimensions...........................................................................................3-2  
Figure 3.2 Orientation............................................................................................3-3  
Figure 3.3 Mounting frame structure.....................................................................3-4  
Figure 3.4 Location of breather .............................................................................3-5  
Figure 3.5 Surface cover temperature measurement points ..................................3-6  
Figure 3.6 Service area ..........................................................................................3-7  
Figure 3.7 Handling cautions.................................................................................3-8  
Figure 3.8 Connector locations..............................................................................3-9  
Figure 3.9 Power supply pins (CN1) ...................................................................3-10  
Figure 4.1 Power Supply Configuration................................................................4-4  
Figure 4.2 Circuit Configuration ...........................................................................4-5  
Figure 4.3 Power-on operation sequence...............................................................4-6  
Figure 4.4 Read/write circuit block diagram.........................................................4-9  
Figure 4.5 Frequency characteristic of programmable filter...............................4-10  
Figure 4.6 Block diagram of servo control circuit...............................................4-12  
Figure 4.7 Physical sector servo configuration ( on disk surface........................4-15  
Figure 4.8 Servo frame format.............................................................................4-16  
Figure 5.1 Interface signals....................................................................................5-2  
Figure 5.2 Conceptual diagram of communication layers.....................................5-9  
Figure 5.3 Register - Host to Device FIS layout .................................................5-12  
Figure 5.4 Register - Device to Host FIS layout .................................................5-13  
Figure 5.5 DMA Active - Device to Host FIS layout..........................................5-13  
Figure 5.6 DMA Setup - Device to Host or Host to Device FIS layout..............5-14  
Figure 5.7 BIST Active - Bidirectional FIS layout..............................................5-15  
Figure 5.8 Data FIS (Bidirectional) layout..........................................................5-16  
Figure 5.9 Execution example of READ MULTIPLE command .......................5-72  
Figure 5.10 Non-data command protocol..........................................................5-142  
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Figure 5.11 PIO data-in command protocol...................................................... 5-144  
Figure 5.12 PIO data-out command protocol.................................................... 5-145  
Figure 5.13 DMA data-in command protocol................................................... 5-146  
Figure 5.14 DMA data-out command protocol................................................. 5-147  
Figure 5.15 READ FP DMA QUEUED command protocol ............................ 5-149  
Figure 5.16 WRITE FP DMA QUEUED command protocol .......................... 5-150  
Figure 5.17 Power-on sequence........................................................................ 5-151  
Figure 5.18 COMRESET sequence .................................................................. 5-152  
Figure 6.1 Response to power-on (when the host is powered  
on earlier than the device)................................................................. 6-2  
Figure 6.2 Response to power-on (when the device is powered  
on earlier than the host).................................................................... 6-3  
Figure 6.3 Response to COMRESET.................................................................... 6-4  
Figure 6.4 Response to a software reset................................................................ 6-5  
Figure 6.5 Data buffer structure.......................................................................... 6-11  
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Tables  
Table 1.1 Specifications ........................................................................................1-4  
Table 1.2 Examples of model names and product numbers..................................1-5  
Table 1.3 Current and power dissipation...............................................................1-7  
Table 1.4 Environmental specifications ................................................................1-8  
Table 1.5 Acoustic noise specification ..................................................................1-9  
Table 1.6 Shock and vibration specification..........................................................1-9  
Table 1.7 Advanced power management.............................................................1-13  
Table 1.8 Interface power management...............................................................1-15  
Table 3.1 Surface temperature measurement points and standard values.............3-6  
Table 3.2 The recommended connector specifications for the host system........3-10  
Table 5.1 Physical Layer Electrical Requirements................................................5-6  
Table 5.2 Connector pinouts..................................................................................5-8  
Table 5.3 Shadow Block Register........................................................................5-11  
Table 5.4 BIST combinations ..............................................................................5-15  
Table 5.5 Command code and parameters ..........................................................5-22  
Table 5.6 Diagnostic code ...................................................................................5-39  
Table 5.7 Operation of DOWNLOAD MICROCODE........................................5-41  
Table 5.8 Example of rewriting procedure of data 384K Bytes  
(30000h Bytes) of microcode.............................................................5-42  
Table 5.9 Features Field values (subcommands) and functions..........................5-51  
Table 5.10 Format of device attribute value data ................................................5-55  
Table 5.11 Format of guarantee failure threshold value data..............................5-55  
Table 5.12 Off-line data collection status.............................................................5-58  
Table 5.13 Self-test execution status ...................................................................5-58  
Table 5.14 Off-line data collection capability.....................................................5-59  
Table 5.15 Failure prediction capability flag.......................................................5-59  
Table 5.16 Drive error logging capability ...........................................................5-59  
Table 5.17 Log Directory Data Format ...............................................................5-60  
Table 5.18 Data format of SMART Summary Error Log....................................5-61  
Table 5.19 Data format of SMART Comprehensive Error Log..........................5-63  
Table 5.20 SMART self-test log data format ......................................................5-64  
Table 5.21 Selective self-test log data structure..................................................5-65  
Table 5.22 Selective self-test feature flags..........................................................5-66  
Table 5.23 DEVICE CONFIGURATION IDENTIFY data structure.................5-70  
Table 5.24 Information to be read by IDENTIFY DEVICE command ..............5-87  
Table 5.25 Features field values and settable modes ..........................................5-97  
Table 5.26 Contents of SECURITY SET PASSWORD data............................5-102  
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Table 5.27 Relationship between combination of Identifier and Security  
level, and operation of the lock function........................................ 5-102  
Table 5.28 Contents of security password ........................................................ 5-110  
Table 5.29 Data format of Read Log Ext log page 10h .................................... 5-125  
Table 5.30 Tag field information...................................................................... 5-125  
Table 5.31 Command code and parameters ..................................................... 5-139  
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CHAPTER 1 Device Overview  
1.1  
1.2  
1.3  
1.4  
1.5  
1.6  
1.7  
1.8  
1.9  
Features  
Device Specifications  
Power Requirements  
Environmental Specifications  
Acoustic Noise  
Shock and Vibration  
Reliability  
Error Rate  
Media Defects  
1.10 Load/Unload Function  
1.11 Advanced Power Management  
1.12 Interface Power Management (IPM)  
Overview and features are described in this chapter, and specifications and power  
requirement are described.  
The disk drive is 2.5-inch hard disk drives with built-in disk controllers. These  
disk drives use the SATA interface protocol which has a high-speed interface data  
transfer rate.  
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1-1  
Device Overview  
1.1 Features  
1.1.1 Functions and performance  
The following features of the disk drive is described.  
(1) Compact  
The disk drive has 1 disk or 2 disks of 65 mm (2.5 inches) diameter, and its height  
is 9.5 mm (0.374 inch).  
(2) Large capacity  
The disk drive can record up to 40 GB (formatted) on one disk using the RLL  
recording method and 30 recording zone technology. The disk drive has a  
formatted capacity of 80 GB (MHT2080BH), 60 GB (MHT2060BH), 40 GB  
(MHT2040BH) respectively.  
(3) High-speed Transfer rate  
The disk drive (the MHT Series) has an internal data rate up to 53.9 MB/s.  
The disk drive supports an external data rate up to 1.5Gbps (Serial-ATA  
Generation-1).  
(4) Average positioning time  
Use of a rotary voice coil motor in the head positioning mechanism greatly  
increases the positioning speed. The average positioning time is 12 ms (at read).  
1.1.2 Adaptability  
(1) Power save mode  
The disk drive is ideal for applications since it supports the power save mode  
function that works in each of the Idle, Standby and Sleep modes and has the  
Partial and Slumber interface power management functions.  
(2) Wide temperature range  
The disk drive can be used over a wide temperature range (5 °C to 55 °C).  
(3) Low noise and vibration  
In Ready status (while the device is waiting for any commands), the Sound Power level  
of the disk drives in idle mode is 2.2 Bels [MHT2040BH]/2.8 Bels [MHT2080BH,  
MHT2060BH]. The Sound Pressure level is 25.0 dB [MHT2040BH]/34.0 dB  
[MHT2080BH, MHT2060BH] as measured 0.3 m from the drive in Idle mode.  
(4) High resistance against shock  
The Load/Unload mechanism is highly resistant against non-operation shock up  
to 8820 m/s2 (900G).  
1-2  
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1.1 Features  
1.1.3 Interface  
(1) Connection to SATA interface  
The disk drive has built-in controllers compatible with the SATA interface.  
(2) Data buffer  
The disk drive use a 2MB or 8MB data buffer to transfer data between the host  
and the disk media.  
In combination with the read-ahead cache system described in item (3) and the  
write cache described in item (6), the buffer contributes to efficient I/O  
processing.  
(3) Read-ahead cache system  
After the execution of a disk read command, the disk drive automatically reads the  
subsequent data block and writes it to the data buffer (read ahead operation). This  
cache system enables fast data access. The next disk read command would normally  
cause another disk access. But, if the read ahead data corresponds to the data  
requested by the next read command, the data in the buffer can be transferred instead.  
(4) Error correction and retry by ECC  
If a recoverable read error occurs, the disk drive itself attempt error recovery.  
The ECC has improved buffer error correction for correctable data errors.  
(5) Self-diagnosis  
The disk drive has a diagnostic function to check operation of the controller and  
disk drive. Executing a diagnostic function of the smart command invokes self-  
diagnosis.  
(6) Write cache  
When the disk drive receives a write command, the disk drive posts the command  
completion at completion of transferring data to the data buffer completion of  
writing to the disk media. This feature reduces the access time at writing.  
C141-E203-01EN  
1-3  
Device Overview  
1.2 Device Specifications  
1.2.1 Specifications summary  
Table 1.1 shows the specifications of the disk drives.  
Table 1.1 Specifications (1/2)  
MHT2080BH  
80 GB  
MHT2060BH  
60 GB  
MHT2040BH  
Format Capacity (*1, *2)  
Number of Sectors (User)  
Bytes per Sector  
40 GB  
156,301,488 sectors 117,210,240 sectors  
78,140,160 sectors  
512 bytes  
5,400 rpm ± 1%  
5.56 ms  
Rotational Speed  
Average Latency  
Positioning time  
(read and seek)  
1.5 ms (typ.)  
Read: 12ms (typ.)  
22 ms (typ.)  
Minimum (Track-Track)  
Average  
Maximum (Full)  
Start time  
4.0 sec (typ.)  
Interface  
Compliant with ATA/ATAPI-7, SATA1.0a, and SATA II 1.0  
[Cable length: less than 1.0m (39.37 inchs)]  
Data Transfer Rate (*2)  
To/From Media  
To/From Host  
53.9 MB/s Max.  
1.5Gbps Max (Serial-ATA Generation-1)  
8MB  
Data Buffer Size (*3)  
Physical Dimensions  
9.5 mm × 100.0 mm × 70.0 mm  
(Height × Depth × Width)  
(*4)  
Weight  
99 g (max)  
*1: Capacity under the LBA mode.  
*2: 1GB = 1,000,000,000 bytes, and 1 MB = 1,000,000 bytes.  
*3: 1MB = 1,048,576 bytes.  
*4: The value of Depth (=100.0 mm) does not include PCBA  
(Printed Circuit Board Assembly). Refer to Section 3.1.  
1-4  
C141-E203-01EN  
1.2 Device Specifications  
Table 1.1 lists the formatted capacity, number of logical cylinders, number  
of heads, and number of sectors of every model for which the CHS mode  
has been selected using the BIOS setup utility on the host.  
Table 1.1 Specifications (2/2)  
Model  
Capacity (*1)  
No. of Cylinder  
No. of Heads  
No. of Sectors  
MHT2080BH  
MHT2060BH  
MHT2040BH  
8.45 GB  
8.45 GB  
8.45 GB  
16,383  
16,383  
16,383  
16  
16  
16  
63  
63  
63  
*1 Indicates the storage capacity when the numbers of logical cylinders, heads, and sectors are  
specified as shown in this table.  
1.2.2 Model and product number  
Table 1.2 lists the model names and product numbers of the disk drive.  
The model name does not necessarily correspond to the product number as listed  
in Table 1.2 since some models have been customized and have specifications  
that are different from those for the standard model.  
If a disk drive is ordered as a replacement drive, the product number must be the  
same as that of the drive being replaced.  
Table 1.2 Examples of model names and product numbers  
Capacity  
(user area)  
Model Name  
Mounting screw  
Order No.  
MHT2080BH  
MHT2060BH  
MHT2040BH  
80 GB  
M3 depth 3  
M3 depth 3  
M3 depth 3  
CA06500-B048  
CA06500-B046  
CA06500-B024  
60 GB  
40 GB  
C141-E203-01EN  
1-5  
Device Overview  
1.3 Power Requirements  
(1) Input Voltage  
+ 5 V ± 5 %  
It is unnecessary for this drive to supply +3.3V and +12V power supplies.  
(2) Ripple  
+5 V  
Maximum  
Frequency  
100 mV (peak to peak)  
DC to 1 MHz  
(3) A negative voltagelike the bottom figure isn't to occur at +5 V when power is turned off  
and, a thing with no ringing.  
Permissible level: 0.2 V  
5
4
3
2
1
0
-1  
0
100  
200  
300  
400  
500  
600  
700  
800  
Time [ms]  
Figure 1.1 Negative voltage at +5 V when power is turned off  
1-6  
C141-E203-01EN  
1.3 Power Requirements  
(4) Current Requirements and Power Dissipation  
Table 1.3 lists the current and power dissipation (typical).  
Table 1.3 Current and power dissipation  
Typical RMS Current  
Typical Power (*3)  
MHT2080BH, MHT2060BH,  
MHT2040BH  
MHT2080BH, MHT2060BH,  
MHT2040BH  
Spin up (*1)  
Idle (*6)  
1.0 A  
5.0 W  
0.85 W  
170 mA  
R/W (on track) (*2) Read 460 mA / Write 460mA  
Read 2.3 W / Write 2.3 W  
2.5 W  
Seek (*5)  
500 mA  
50 mA  
20 mA  
Standby (*6)  
Sleep (*6)  
0.25 W  
0.1 W  
Energy  
0.011 W/GB  
Efficiency (*4)  
(rank E / MHT2080BH)  
0.014 W/GB  
(rank E / MHT2060BH)  
0.021 W/GB  
(rank D / MHT2040BH)  
*1  
*2  
Maximum current and power at starting spindle motor.  
Current and power level when the operation (command) that accompanies a  
transfer of 63 sectors is executed 3 times in 100 ms.  
*3  
*4  
Power requirements reflect nominal values for +5 V power.  
Energy efficiency based on the Law concerning the Rational Use of Energy  
indicates the value obtained by dividing power consumption by the storage  
capacity. (Japan only)  
*5  
*6  
The seek average current is specified based on three operations per  
100 msec.  
IPM mode: Slumber mode.  
C141-E203-01EN  
1-7  
Device Overview  
(5) Current fluctuation (Typ.) at +5 V when power is turned on  
Figure 1.2 Current fluctuation (Typ.) at +5 V when power is turned on  
(6) Power on/off sequence  
The voltage detector circuits monitor +5 V. The circuits do not allow a write  
signal if either voltage is abnormal. These prevent data from being destroyed and  
eliminates the need to be concerned with the power on/off sequence.  
1.4 Environmental Specifications  
Table 1.4 lists the environmental specifications.  
Table 1.4 Environmental specifications  
Item  
Specification  
Temperature  
• Operating  
5 °C to 55 °C (ambient)  
5 °C to 60 °C (disk cover surface)  
–40 °C to 65 °C  
• Non-operating  
• Thermal Gradient  
Humidity  
20 °C/h or less  
• Operating  
8 % to 90 % RH (Non-condensing)  
5 % to 95 % RH (Non-condensing)  
• Non-operating  
• Maximum Wet Bulb  
29 °C (Operating)  
40 °C (Non-operating)  
Altitude (relative to sea level)  
• Operating  
–300 to 3,000 m  
–300 to 12,000 m  
• Non-operating  
1-8  
C141-E203-01EN  
1.5 Acoustic Noise  
1.5 Acoustic Noise  
Table 1.5 lists the acoustic noise specification.  
Table 1.5 Acoustic noise specification  
Item  
Idle mode (DRIVE READY)  
Sound Power  
Specification (typical)  
2.2 Bels [MHT2040BH]  
2.8 Bels [MHT2080BH/MHT2060BH]  
Sound Pressure (at 0.3m)  
25.0 dB [MHT2040BH]  
34.0 dB [MHT2080BH/MHT2060BH]  
1.6 Shock and Vibration  
Table 1.6 lists the shock and vibration specification.  
Table 1.6 Shock and vibration specification  
Item  
Specification  
Vibration (Swept sine, 1/4 octave per minute)  
• Operating  
5 to 500 Hz, 9.8m/s2 0-peak (1G 0-peak)  
(without non-recovered errors)  
5 to 500 Hz, 49m/s2 0-peak (5G 0-peak)  
(no damage)  
• Non-operating  
Shock (half-sine pulse)  
• Operating  
2205 m/s2 0-peak (225G 0-peak)  
2ms duration  
(without non-recovered errors)  
• Non-operating  
8820 m/s2 0-peak (900G 0-peak)  
1ms duration  
1176 m/s2 0-peak (120G 0-peak)  
11ms duration  
(no damage)  
C141-E203-01EN  
1-9  
Device Overview  
1.7 Reliability  
(1) Mean time between failures (MTBF)  
Conditions of 300,000 h Power-on time 250H/month or less 3000H/years  
or less  
Operating time 20 % or less of power-on time  
Environment  
5 to 55 °C/8 to 90 %  
But humidity bulb temperature  
29 °C or less  
MTBF is defined as follows:  
Total operation time in all fields  
MTBF=  
(H)  
number of device failure in all fields (*1)  
*1 “Disk drive defects” refers to defects that involve repair, readjustment, or  
replacement. Disk drive defects do not include failures caused by external  
factors, such as damage caused by handling, inappropriate operating  
environments, defects in the power supply host system, or interface cable.  
(2) Mean time to repair (MTTR)  
The mean time to repair (MTTR) is 30 minutes or less, if repaired by a specialist  
maintenance staff member.  
(3) Service life  
In situations where management and handling are correct, the disk drive requires  
no overhaul for five years when the DE surface temperature is less than 48 °C.  
When the DE surface temperature exceeds 48 °C, the disk drives requires no  
overhaul for five years or 20,000 hours of operation, whichever occurs first.  
Refer to item (3) in Subsection 3.2 for the measurement point of the DE surface  
temperature. Also the operating conditions except the environment temperature  
are based on the MTBF conditions.  
(4) Data assurance in the event of power failure  
Except for the data block being written to, the data on the disk media is assured in  
the event of any power supply abnormalities. This does not include power supply  
abnormalities during disk media initialization (formatting) or processing of  
defects (alternative block assignment).  
1-10  
C141-E203-01EN  
1.8 Error Rate  
1.8 Error Rate  
Known defects, for which alternative blocks can be assigned, are not included in  
the error rate count below. It is assumed that the data blocks to be accessed are  
evenly distributed on the disk media.  
(1) Unrecoverable read error  
Read errors that cannot be recovered by maximum read retries of drive without  
user’s retry and ECC corrections shall occur no more than 10 times when reading  
data of 1014 bits. Read retries are executed according to the disk drive’s error  
recovery procedure, and include read retries accompanying head offset  
operations.  
(2) Positioning error  
Positioning (seek) errors that can be recovered by one retry shall occur no more  
than 10 times in 107 seek operations.  
1.9 Media Defects  
Defective sectors are replaced with alternates when the disk drive is formatted  
prior to shipment from the factory (low level format). Thus, the hosts see a  
defect-free devices.  
Alternate sectors are automatically accessed by the disk drive. The user need not  
be concerned with access to alternate sectors.  
1.10 Load/Unload Function  
The Load/Unload function is a mechanism that loads the head on the disk and  
unloads the head from the disk.  
The product supports a minimum of 300,000 normal Load/Unload cycles.  
Normal Unload is a normal head unloading operation and the commands listed  
below are executed.  
COMRESET signal asserted  
STANDBY command issued  
STANDBY IMMEDIATE command issued  
SLEEP command issued  
IDLE command issued  
SLUMBER signal transferred  
(PMREQ_S signal is transferred from the host or the drive, and the host  
responds with PMACK signal.)  
C141-E203-01EN  
1-11  
Device Overview  
Emergency Unload other than Normal Unload is performed when the power is  
shut down while the heads are still loaded on the disk.  
The product supports the Emergency Unload a minimum of 20,000 times.  
When the power is shut down, the controlled Normal Unload cannot be executed.  
Therefore, the number of Emergency other than Normal Unload is specified.  
Remark:  
We recommend cutting the power supply of the HDD for this device after the  
Head Unload operation completes. The recommended power supply cutting  
sequence for this device is as follows:  
1) Disk Flush  
Flush Cache command execution.  
2) Head Unload  
Standby Immediate command execution.  
3) Wait Status  
Checking whether bit 7 of the status register was set to '0'.  
(wait to complete STANDBY IMMEDIATE command)  
4) HDD power supply cutting  
1.11 Advanced Power Management  
The disk drive shifts to the three kinds of APM modes automatically under the  
Idle condition.  
The APM mode can be chosen with a Sector Count register of the SET  
FEATURES(EF) command.  
In APM Mode-1, which is the APM default mode, the operation status shifts till it  
finally reaches "Low Power Idle."  
The disk drive complies with the three kinds of APM modes that a command  
from the host is required.  
FR = 05h : Enable APM  
SC = C0h - FEh :  
SC = 80h - BFh :  
SC = 01h - 7Fh :  
Mode-0 Active Idle Low Power Idle  
Mode-1 Active Idle Low Power Idle (Default)  
Mode-2 Active Idle Low Power Idle Standby  
FR = 85h : Disable APM (Set Mode-0)  
1-12  
C141-E203-01EN  
1.11 Advanced Power Management  
Active Idle:  
The head is in a position of extreme inner in disk medium.  
Low Power Idle:  
The head is unloaded from disk.  
The spindle motor rotates.  
Standby:  
The spindle motor stops.  
Table 1.7 Advanced power management  
Low Power Idle  
Active Idle  
Standby  
(Spin Off)  
APM Mode  
(Unload)  
Mode-0  
Mode-1  
Mode-2  
0.2-1.2 sec  
0.2-1.2 sec  
0.2-1.2 sec  
15 min.  
N/A  
N/A  
10.0-40.0 sec  
10.0-40.0 sec  
10.0-40.0 sec  
When the maximum time that the HDD is waiting for commands has been  
exceeded:  
Mode-0: Mode shifts from Active condition to Active Idle in 0.2-1.2, and to Low  
Power Idle in 15 minutes.  
Mode-1: Mode shifts from Active condition to Active Idle in 0.2-1.2 seconds and  
to Low Power Idle in 10.0-40.0 seconds.  
Mode-2: Mode shifts from Active condition to Active Idle in 0.2-1.2 seconds and  
to Low Power Idle in 10.0-40.0 seconds. After 10.0-40.0 seconds in  
Low Power Idle, the mode shifts to standby.  
*
The default values of these settings are reflected in the WORD 91 values of  
the IDENTIFY DEVICE command. Also, the APM mode is initialized to  
Mode-1 (default value) by a hardware reset and at power-off.  
C141-E203-01EN  
1-13  
Device Overview  
1.12 Interface Power Management (IPM)  
1.12.1 Host-initiated Interface Power Management (HIPM)  
When the disk drive is waiting for commands, it can enter one of three IPM  
modes as requested by the host. The three IPM modes are:  
1) Partial mode: PMREQ_P is sent when the host requests the Partial mode.  
2) Slumber mode: PMREQ_S is sent when the host requests the Slumber mode.  
3) Active mode: When the serial ATA interface is in active state.  
There are three interface (I/F) power states: Active, Partial, and Slumber. As  
requested by the host, the disk drive switches its I/F power state from the Active  
state to the Partial state, or from the Active state to the Slumber state.  
1.12.2 Device-initiated Interface Power Management (DIPM)  
If this function is enabled by Set Features command, the disk drive shifts to two  
kinds of IPM modes automatically under the Idle condition.  
1) Partial mode: PMREQ_P is sent when the disk drive requests the Partial  
mode.  
2) Slumber mode: PMREQ_S is sent when the disk drive requests the Slumber  
mode.  
I/F power states  
1) Active state  
The SATA interface is active, and data can be sent and received.  
2) Partial state  
The SATA interface is in the Power Down state. In this state, the interface is  
switched to the Partial state when a PMREQ_P signal is received from or sent  
to host. Because the return time to the Active state from the Partial state is  
specified as within 10 µs, the degree of the I/F Power Save mode is shallow  
so that this recovery time is satisfied.  
3) Slumber state  
The SATA interface is in the Power Down state. In this state, the interface is  
switched to the Slumber state when a PMREQ_S signal is received from or  
sent to host. Because the return time to the Active state from the Slumber  
state is specified as within 10 ms, the degree of the I/F Power Save mode is  
deep so that this recovery time is satisfied.  
1-14  
C141-E203-01EN  
1.12 Interface Power Management (IPM)  
Table 1.8 Interface power management  
IPM Mode  
Active  
I/F power state  
Active State  
Partial State  
Slumber State  
Return time to active  
I/F condition  
Active  
Partial  
Power Down  
Power Down  
5 to 10 µs maximum  
5 to 10 ms maximum  
Slumber  
C141-E203-01EN  
1-15  
This page is intentionally left blank.  
CHAPTER 2 Device Configuration  
2.1  
2.2  
Device Configuration  
System Configuration  
This chapter describes the internal configurations of the hard disk drives and the  
configuration of the systems in which they operate.  
C141-E203-01EN  
2-1  
Device Configuration  
2.1 Device Configuration  
Figure 2.1 shows the disk drive. The disk drive consists of a disk enclosure (DE),  
read/write preamplifier, and controller PCA. The disk enclosure contains the disk  
media, heads, spindle motors, actuators, and a circulating air filter.  
Figure 2.1 Disk drive outerview  
(1) Disk  
The outer diameter of the disk is 65 mm. The inner diameter is 20 mm.  
(2) Head  
The heads are of the load/unload (L/UL) type. The head unloads the disk out of  
while the disk is not rotating and loads on the disk when the disk starts.  
(3) Spindle motor  
The disks are rotated by a direct drive Sensor-less DC motor.  
(4) Actuator  
The actuator uses a revolving voice coil motor (VCM) structure which consumes  
low power and generates very little heat. The head assembly at the edge of the  
actuator arm is controlled and positioned by feedback of the servo information  
read by the read/write head. If the power is not on or if the spindle motor is  
stopped, the head assembly stays on the ramp out of the disk and is fixed by a  
mechanical lock.  
(5) Air circulation system  
The disk enclosure (DE) is sealed to prevent dust and dirt from entering. The disk  
enclosure features a closed loop air circulation system that relies on the blower  
effect of the rotating disk. This system continuously circulates the air through the  
circulation filter to maintain the cleanliness of the air within the disk enclosure.  
2-2  
C141-E203-01EN  
2.2 System Configuration  
(6) Read/write circuit  
The read/write circuit uses a LSI chip for the read/write preamplifier. It improves  
data reliability by preventing errors caused by external noise.  
(7) Controller circuit  
The controller circuit consists of an LSI chip which includes Serial-ATA core to  
achieve a high-performance native Serial-ATA controller.  
2.2 System Configuration  
2.2.1 SATA interface  
Figure 2.2 shows the SATA interface system configuration. The disk drive  
complies with ATA/ATAPI-7, SATA 1.0a and SATA II 1.0 standards.  
2.2.2 Drive connection  
Operating System  
Serial  
ATA  
Adapter  
Application 1  
Disk Drive  
Disk Drive  
Driver  
Application 2  
Application 3  
Figure 2.2 Drive system configuration  
C141-E203-01EN  
2-3  
This page is intentionally left blank.  
CHAPTER 3 Installation Conditions  
3.1  
3.2  
3.3  
Dimensions  
Mounting  
Cable Connections  
This chapter gives the external dimensions, installation conditions, surface  
temperature conditions, cable connections, and switch settings of the hard disk  
drives.  
C141-E203-01EN  
3-1  
Installation Conditions  
3.1 Dimensions  
Figure 3.1 illustrates the dimensions of the disk drive. All dimensions are in mm.  
*1  
*2  
*3  
*4  
The PCA and connectors are not included in these dimensions.  
Dimension from the center of the user tap to the base of the connector pins  
Length of the connector pins  
Dimension from the outer edge of the user tap to the center of the connector  
pins  
*5  
Dimension from the outer edge of the user tap to the innermost edge of the  
connector pins  
Figure 3.1 Dimensions  
3-2  
C141-E203-01EN  
3.2 Mounting  
3.2 Mounting  
For information on mounting, see the "FUJITSU 2.5-INCH HDD  
INTEGRATION GUIDANCE (C141-E144)."  
(1) Orientation  
Figure 3.2 illustrates the allowable orientations for the disk drive.  
gravity  
(b) Horizontal –1  
(a) Horizontal –1  
gravity  
(c) Vertical –1  
(d) Vertical –2  
gravity  
(e) Vertical –3  
(f) Vertical –4  
Figure 3.2 Orientation  
C141-E203-01EN  
3-3  
Installation Conditions  
(2) Frame  
The MR head bias of the HDD disk enclosure (DE) is zero. The mounting frame  
is connected to Signal Ground (SG).  
IMPORTANT  
Use M3 screw for the mounting screw and the screw length should  
satisfy the specification in Figure 3.3.  
The tightening torque must be 0.49Nm (5kgfcm).  
When attaching the HDD to the system frame, do not allow the  
system frame to touch parts (cover and base) other than parts to  
which the HDD is attached.  
(3) Limitation of mounting  
Note) These dimensions are recommended values; if it is not possible to satisfy  
them, contact us.  
Side surface  
mounting  
2.5  
2.5  
Bottom surface mounting  
DE  
2.5  
2.5  
2
B
PCA  
A
Frame of system  
cabinet  
Frame of system  
cabinet  
3.0 or less  
Details of A  
Screw  
Screw  
3.0 or less  
Figure 3.3 Mounting frame structure  
3-4  
C141-E203-01EN  
3.2 Mounting  
IMPORTANT  
Because of breather hole mounted to the HDD, do not allow this to  
close during mounting.  
Locating of breather hole is shown as Figure 3.4.  
For breather hole of Figure 3.4, at least, do not allow its around  
φ 2.4 to block.  
Figure 3.4 Location of breather  
C141-E203-01EN  
3-5  
Installation Conditions  
(4) Ambient temperature  
The temperature conditions for a disk drive mounted in a cabinet refer to the  
ambient temperature at a point 3 cm from the disk drive. The ambient  
temperature must satisfy the temperature conditions described in Section 1.4, and  
the airflow must be considered to prevent the DE surface cover temperature from  
exceeding 60 °C.  
Provide air circulation in the cabinet such that the PCA side, in particular,  
receives sufficient cooling. To check the cooling efficiency, measure the surface  
cover temperatures of the DE. Regardless of the ambient temperature, this  
surface cover temperature must meet the standards listed in Table 3.1. Figure 3.5  
shows the temperature measurement point.  
1
Figure 3.5 Surface cover temperature measurement points  
Table 3.1 Surface temperature measurement points and standard values  
No.  
1
Measurement point  
DE cover  
Temperature  
60 °C max  
3-6  
C141-E203-01EN  
3.2 Mounting  
(5) Service area  
Figure 3.6 shows how the drive must be accessed (service areas) during and after  
installation.  
Mounting screw hole  
Cable connection  
Mounting screw hole  
Figure 3.6 Service area  
Data corruption: Avoid mounting the disk drive near strong  
magnetic sources such as loud speakers. Ensure that the disk drive  
is not affected by external magnetic fields.  
Damage: Do not press the cover of the disk drive. Pressing it too  
hard, the cover and the spindle motor contact, which may cause  
damage to the disk drive.  
Static: When handling the device, disconnect the body ground  
(500 kor greater). Do not touch the printed circuit board, but  
hold it by the edges.  
(6) Handling cautions  
Please keep the following cautions, and handle the HDD under the safety  
environment.  
C141-E203-01EN  
3-7  
Installation Conditions  
-
General notes  
ESD mat  
Shock absorbing mat  
Wrist strap  
Use the Wrist strap.  
Place the shock absorbing mat on the  
operation table, and place ESD mat on it.  
Do not hit HDD each other.  
Do not stack when carrying.  
Do not place HDD vertically  
to avoid falling down.  
Do not drop.  
Figure 3.7 Handling cautions  
-
-
Installation  
(1) Please use the driver of a low impact when you use an electric driver.  
HDD is occasionally damaged by the impact of the driver.  
(2) Please observe the tightening torque of the screw strictly.  
M3 ······· 0.49Nm (5 kgfcm)..  
Recommended equipments  
Contents  
Wrist strap  
Model  
JX-1200-3056-8  
SKY-8A (Color Seiden Mat)  
SS-6500  
Maker  
SUMITOMO 3M  
Achilles  
ESD  
ESD mat  
Shock  
Low shock driver  
HIOS  
3-8  
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3.3 Connections with Host System  
3.3 Connections with Host System  
3.3.1 Device connector  
The disk drive has the SATA interface connectors listed below for connecting  
external devices. Figure 3.8 shows the locations of these connectors and  
terminals.  
SATA interface  
PCA  
and power  
connectors  
Figure 3.8 Connector locations  
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3-9  
Installation Conditions  
3.3.2 Signal segment and power supply segment  
Figure 3.9 shows each segment of the SATA interface connector and pin  
numbers.  
View from the  
connector side  
Power supply  
segment  
Signal segment  
View from the  
PCA side  
S1 pins in the signal  
segment  
P1 pins in the power  
supply segment  
Figure 3.9 Power supply pins (CN1)  
3.3.3 Connector specifications for host system  
Table 3.2 lists the recommended specifications for the host interface connectors.  
Table 3.2 The recommended connector specifications for the host system  
Segment  
Name  
Model (Manufacturer)  
SATA interface  
and power supply  
Host receptacle  
67492-0220 (Molex) or compatibles  
3-10  
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3.3 Connections with Host System  
3.3.4 SATA interface cable connection  
The cable that connects the disk drive to the host system must be compliant with  
the Serial ATA 1.0a specification.  
3.3.5 Note about SATA interface cable connection  
Take note of the following precaution about plugging a SATA interface cable into  
the SATA interface connector of the disk drive and plugging the connector into a  
host receptacle:  
When plugging together the disk drive SATA interface connector and the  
host receptacle or SATA interface cable connector, do not apply more than  
10 kgf of force in the connection direction once they are snugly and securely  
in position.  
Note: Hot Plug  
These drives support the serial ATA interface and Hot Plug (hot-pluggable).  
However, the disk drive installation and removal procedures and notes on safety  
precautions with regard to hot-plugging vary depending on the specific  
requirements and environment-related conditions of the system to which the drive  
is connected by hot-plugging.  
When using the drive under general conditions of use (i.e., without hot-plugging),  
observe the important alert messages and notes on safety precautions given in this  
manual.  
For the conditions of use and notes on using the drive with a system that supports  
hot-plugging, contact our sales representative at one of our offices.  
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3-11  
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CHAPTER 4 Theory of Device Operation  
4.1  
4.2  
4.3  
4.4  
4.5  
4.6  
4.7  
Outline  
Subassemblies  
Circuit Configuration  
Power-on Sequence  
Self-calibration  
Read/write Circuit  
Servo Control  
This chapter explains basic design concepts of the disk drive. Also, this chapter  
explains subassemblies of the disk drive, each sequence, servo control, and  
electrical circuit blocks.  
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4-1  
Theory of Device Operation  
4.1 Outline  
This chapter consists of two parts. First part (Section 4.2) explains mechanical  
assemblies of the disk drive. Second part (Sections 4.3 through 4.7) explains a  
servo information recorded in the disk drive and drive control method.  
4.2 Subassemblies  
The disk drive consists of a disk enclosure (DE) and printed circuit assembly  
(PCA).  
The DE contains all movable parts in the disk drive, including the disk, spindle,  
actuator, read/write head, and air filter. For details, see Subsections 4.2.1 to 4.2.4.  
The PCA contains the control circuits for the disk drive. The disk drive has one  
PCA. For details, see Sections 4.3.  
4.2.1 Disk  
The DE contains disks with an outer diameter of 65 mm and an inner diameter of  
20 mm.  
Servo data is recorded on each cylinder (total 124). Servo data written at factory  
is read out by the read head. For servo data, see Section 4.7.  
4.2.2 Spindle  
The spindle consists of a disk stack assembly and spindle motor. The disk stack  
assembly is activated by the direct drive sensor-less DC spindle motor, which has  
a speed of 5,400 rpm ±1%. The spindle is controlled with detecting a PHASE  
signal generated by counter electromotive voltage of the spindle motor at starting.  
4.2.3 Actuator  
The actuator consists of a voice coil motor (VCM) and a head carriage. The  
VCM moves the head carriage along the inner or outer edge of the disk. The head  
carriage position is controlled by feeding back the difference of the target position  
that is detected and reproduced from the servo information read by the read/write  
head.  
4-2  
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4.3 Circuit Configuration  
4.2.4 Air filter  
There are two types of air filters: a breather filter and a circulation filter.  
The breather filter makes an air in and out of the DE to prevent unnecessary  
pressure around the spindle when the disk starts or stops rotating. When disk  
drives are transported under conditions where the air pressure changes a lot,  
filtered air is circulated in the DE.  
The circulation filter cleans out dust and dirt from inside the DE. The disk drive  
cycles air continuously through the circulation filter through an enclosed loop air  
cycle system operated by a blower on the rotating disk.  
4.3 Circuit Configuration  
Figure 4.1 shows the power supply configuration of the disk drive, and Figure 4.2  
shows the disk drive circuit configuration.  
(1) Read/write circuit  
The read/write circuit consists of two circuits; read/write preamplifier (PreAMP)  
and read channel (RDC).  
The PreAMP consists of the write current switch circuit, that flows the write  
current to the head coil, and the voltage amplifier circuit, that amplitudes the read  
output from the head.  
The RDC is the read demodulation circuit using the Modified Extended Partial  
Response (MEEPR), and contains the Viterbi detector, programmable filter,  
adaptable transversal filter, times base generator, data separator circuits,  
RLL (Run Length Limited) encoder and servo demodulation circuit.  
(2) Servo circuit  
The position and speed of the voice coil motor are controlled by 2 closed-loop  
servo using the servo information recorded on the data surface. The servo  
information is an analog signal converted to digital for processing by a MPU and  
then reconverted to an analog signal for control of the voice coil motor.  
The MPU precisely sets each head on the track according on the servo  
information on the media surface.  
(3) Spindle motor driver circuit  
The circuit measures the interval of a PHASE signal generated by counter-  
electromotive voltage of a motor and controls the motor speed comparing target  
speed.  
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4-3  
Theory of Device Operation  
(4) Controller circuit  
Major functions are listed below.  
Serial-ATA interface control and data transfer control  
Data buffer management  
Sector format control  
Defect management  
ECC control  
Error recovery and self-diagnosis  
Figure 4.1 Power Supply Configuration  
4-4  
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4.3 Circuit Configuration  
Serial ATA Interface  
PCA  
Console  
MPU & HDC & RDC  
(88i6535; Marvell)  
Data Buffer  
SDRAM  
MPU  
HDC  
Flash ROM  
FROM  
RDC  
Shock  
Sensor  
SVC  
TLS2255  
Crystal  
40MHz  
DE  
SP Motor  
Media  
VCM  
Thermistor  
R/W Pre-Amp  
TLS26B624  
HEAD  
Figure 4.2 Circuit Configuration  
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4-5  
Theory of Device Operation  
4.4 Power-on Sequence  
Figure 4.3 describes the operation sequence of the disk drive at power-on. The  
outline is described below.  
a) After the power is turned on, the disk drive executes the MPU bus test,  
internal register read/write test, and work RAM read/write test. When the  
self-diagnosis terminates successfully, the disk drive starts the spindle motor.  
b) The disk drive executes self-diagnosis (data buffer read/write test) after  
enabling response to the SATA interface.  
c) After confirming that the spindle motor has reached rated speed, the head  
assembly is loaded on the disk.  
d) The disk drive positions the heads onto the SA area and reads out the system  
information.  
e) The disk drive sets up a requirement for execution of self -calibration. This  
collects data for VCM torque and mechanical external forces applied to the  
actuator, and updates the calibrating value.  
f) The drive becomes ready. The host can issue commands.  
Power-on  
Start  
a)  
Self-diagnosis 1  
- MPU bus test  
- Internal register  
write/read test  
- Work RAM write/read  
test  
The spindle motor starts.  
b)  
c)  
Self-diagnosis 2  
- Data buffer write/read  
test  
d)  
Initial on-track and read  
out of system information  
Confirming spindle motor  
speed  
e)  
f)  
Execute self-calibration  
Load the head assembly  
Drive ready state  
(command waiting state)  
End  
Figure 4.3 Power-on operation sequence  
4-6  
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4.5 Self-calibration  
4.5 Self-calibration  
The disk drive occasionally performs self-calibration in order to sense and  
calibrate mechanical external forces on the actuator, and VCM torque. This  
enables precise seek and read/write operations.  
4.5.1 Self-calibration contents  
(1) Sensing and compensating for external forces  
The actuator suffers from torque due to the FPC forces and winds accompanying  
disk revolution. The torque vary with the disk drive and the cylinder where the  
head is positioned. To execute stable fast seek operations, external forces are  
occasionally sensed.  
The firmware of the drive measures and stores the force (value of the actuator  
motor drive current) that balances the torque for stopping head stably. This  
includes the current offset in the power amplifier circuit and DAC system.  
The forces are compensated by adding the measured value to the specified current  
value to the power amplifier. This makes the stable servo control.  
To compensate torque varying by the cylinder, the disk is divided into 13 areas  
from the innermost to the outermost circumference and the compensating value is  
measured at the measuring cylinder on each area at factory calibration. The  
measured values are stored in the SA cylinder. In the self-calibration, the  
compensating value is updated using the value in the SA cylinder.  
(2) Compensating open loop gain  
Torque constant value of the VCM has a dispersion for each drive, and varies  
depending on the cylinder that the head is positioned. To realize the high speed  
seek operation, the value that compensates torque constant value change and loop  
gain change of the whole servo system due to temperature change is measured  
and stored.  
For sensing, the firmware mixes the disturbance signal to the position signal at the  
state that the head is positioned to any cylinder. The firmware calculates the loop  
gain from the position signal and stores the compensation value against to the  
target gain as ratio.  
For compensating, the direction current value to the power amplifier is multiplied  
by the compensation value. By this compensation, loop gain becomes constant  
value and the stable servo control is realized.  
To compensate torque constant value change depending on cylinder, whole  
cylinders from most inner to most outer cylinder are divided into 13 partitions at  
calibration in the factory, and the compensation data is measured for  
representative cylinder of each partition. This measured value is stored in the SA  
area. The compensation value at self-calibration is calculated using the value in  
the SA area.  
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4-7  
Theory of Device Operation  
4.5.2 Execution timing of self-calibration  
Self-calibration is performed once when power is turned on. After that, the disk  
drive does not perform self-calibration until it detects an error.  
That is, self-calibration is performed each time one of the following events occur:  
When it passes from the power on for about 7 or 8 seconds except that the  
disk drive shifts to Low Power Idle mode, Standby mode and Sleep mode by  
execution of any commands.  
The number of retries to write or seek data reaches the specified value.  
The error rate of data reading, writing, or seeking becomes lower than the  
specified value.  
4.5.3 Command processing during self-calibration  
This enables the host to execute the command without waiting for a long time,  
even when the disk drive is performing self-calibration. The command execution  
wait time is about maximum 72 ms.  
When the error rate of data reading, writing, or seeking becomes lower than the  
specified value, self-calibration is performed to maintain disk drive stability.  
If the disk drive receives a command execution request from the host while  
performing self-calibration, it stops the self-calibration and starts to execute the  
command. In other words, if a disk read or write service is necessary, the disk  
drive positions the head to the track requested by the host, reads or writes data,  
and then restarts calibration after about 3 seconds.  
If the error rate recovers to a value exceeding the specified value, self-calibration  
is not performed.  
4-8  
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4.6 Read/write Circuit  
4.6 Read/write Circuit  
The read/write circuit consists of the read/write preamplifier (PreAMP), the write  
circuit, the read circuit, and the time base generator in the read channel (RDC).  
Figure 4.4 is a block diagram of the read/write circuit.  
4.6.1 Read/write preamplifier (PreAMP)  
PreAMP equips a read preamplifier and a write current switch, that sets the bias  
current to the MR device and the current in writing. Each channel is connected to  
each data head, and PreAMP switches channel by serial I/O. In the event of any  
abnormalities, including a head short-circuit or head open circuit, the write unsafe  
signal is generated so that abnormal write does not occur.  
4.6.2 Write circuit  
The write data is output from the hard disk controller (HDC) with the NRZ data  
format, and sent to the encoder circuit in the RDC. The NRZ write data is  
converted to RLL (Run Length Limited) code data by the encoder circuit then  
sent to the PreAMP, and the data is written onto the media.  
(1) RLL code MEEPRML  
This device converts data using the RLL (Run Length Limited) algorithm.  
(2) Write precompensation  
Write precompensation compensates, during a write process, for write non-  
linearity generated at reading.  
Figure 4.4 Read/write circuit block diagram  
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4-9  
Theory of Device Operation  
4.6.3 Read circuit  
The head read signal from the PreAMP is regulated by the automatic gain control  
(AGC) circuit. Then the output is converted into the sampled read data pulse by  
the programmable filter circuit and the flash digitizer circuit. This clock signal is  
converted into the NRZ data by the ENDEC circuit based on the read data  
maximum-likelihood-detected by the Viterbi detection circuit, then is sent to the  
HDC.  
(1) AGC circuit  
The AGC circuit automatically regulates the output amplitude to a constant value  
even when the input amplitude level fluctuates. The AGC amplifier output is  
maintained at a constant level even when the head output fluctuates due to the  
head characteristics or outer/inner head positions.  
(2) Programmable filter circuit  
The programmable filter circuit has a low-pass filter function that eliminates  
unnecessary high frequency noise component and a high frequency boost-up  
function that equalizes the waveform of the read signal.  
Cut-off frequency of the low-pass filter and boost-up gain are controlled from the  
register in read channel by an instruction of the serial data signal from MPU  
(M5). The MPU optimizes the cut-off frequency and boost-up gain according to  
the transfer frequency of each zone.  
Figure 4.5 shows the frequency characteristic sample of the programmable filter.  
-3 dB  
Figure 4.5 Frequency characteristic of programmable filter  
4-10  
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4.6 Read/write Circuit  
(3) FIR circuit  
This circuit is 10-tap sampled analog transversal filter circuit that equalizes the  
head read signal to the Modified Extended Partial Response (MEEPR) waveform.  
(4) A/D converter circuit  
This circuit changes Sampled Read Data Pulse from the FIR circuit into Digital  
Read Data.  
(5) Viterbi detection circuit  
The sample hold waveform output from the flash digitizer circuit is sent to the  
Viterbi detection circuit. The Viterbi detection circuit demodulates data  
according to the survivor path sequence.  
(6) ENDEC  
This circuit converts the read data into the NRZ data.  
4.6.4 Digital PLL circuit  
The drive uses constant density recording to increase total capacity. This is  
different from the conventional method of recording data with a fixed data  
transfer rate at all data area. In the constant density recording method, data area  
is divided into zones by radius and the data transfer rate is set so that the  
recording density of the inner cylinder of each zone is nearly constant. The drive  
divides data area into 30 zones to set the data transfer rate.  
The MPU transfers the data transfer rate setup data (SD/SC) to the RDC that  
includes the Digital PLL circuit to change the data transfer rate.  
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4-11  
Theory of Device Operation  
4.7 Servo Control  
The actuator motor and the spindle motor are submitted to servo control. The  
actuator motor is controlled for moving and positioning the head to the track  
containing the desired data. To turn the disk at a constant velocity, the actuator  
motor is controlled according to the servo data that is written on the data side  
beforehand.  
4.7.1 Servo control circuit  
Figure 4.6 is the block diagram of the servo control circuit. The following  
describes the functions of the blocks:  
(1)  
MPU  
SVC  
(3)  
(4)  
Power  
(2)  
Servo  
burst  
capture  
MPU  
core  
DAC  
Head  
VCM current  
Amp  
CSR  
(7)  
Position Sense  
VCM  
(5)  
(6)  
Driver  
Spindle  
motor  
control  
Spindle  
motor  
CSR: Current Sense Resister  
VCM: Voice Coil Motor  
Figure 4.6 Block diagram of servo control circuit  
(1) Microprocessor unit (MPU)  
The MPU executes startup of the spindle motor, movement to the reference  
cylinder, seek to the specified cylinder, and calibration operations. Main internal  
operation of the MPU are shown below.  
The major internal operations are listed below.  
a. Spindle motor start  
4-12  
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4.7 Servo Control  
Starts the spindle motor and accelerates it to normal speed when power is  
applied.  
b. Move head to reference cylinder  
Drives the VCM to position the head at the any cylinder in the data area. The  
logical initial cylinder is at the outermost circumference (cylinder 0).  
c. Seek to specified cylinder  
Drives the VCM to position the head to the specified cylinder.  
d. Calibration  
Senses and stores the thermal offset between heads and the mechanical forces  
on the actuator, and stores the calibration value.  
(2) Servo burst capture circuit  
The servo burst capture circuit reproduces signals (position signals) that indicate the  
head position from the servo data on the data surface. From the servo area on the  
data area surface, via the data head, the burst signal of SERVO A, SERVO B,  
SERVO C, and SERVO D is output as shown in Figure 4.9 in subsequent to the  
servo mark, gray code that indicates the cylinder position, and index information.  
The servo signals do A/D-convert by Fourier-demodulator in the servo burst capture  
circuit. At that time the AGC circuit is in hold mode. The A/D converted data is  
recognized by the MPU as position information with A-B and C-D processed.  
(3) D/A converter (DAC)  
The control program calculates the specified data value (digital value) of the  
VCM drive current, and the value is converted from digital-to-analog so that an  
analog output voltage is sent to the power amplifier.  
(4) Power amplifier  
The power amplifier feeds currents, corresponding to the DAC output signal  
voltage to the VCM.  
(5) Spindle motor control circuit  
The spindle motor control circuit controls the sensor-less spindle motor. A  
spindle driver IC with a built-in PLL(FLL) circuit that is on a hardware unit  
controls the sensor-less spindle motor.  
(6) Driver circuit  
The driver circuit is a power amplitude circuit that receives signals from the  
spindle motor control circuit and feeds currents to the spindle motor.  
(7) VCM current sense resistor (CSR)  
This resistor controls current at the power amplifier by converting the VCM  
current into voltage and feeding back.  
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4-13  
Theory of Device Operation  
4.7.2 Data-surface servo format  
Figure 4.7 describes the physical layout of the servo frame. The three areas  
indicated by (1) to (3) in Figure 4.7 are described below.  
(1) Inner guard band (IGB)  
This area is located inside the user area, and the rotational speed of the VCM can  
be controlled on this cylinder area for head moving.  
(2) Data area  
This area is used as the user data area and the SA cylinder.  
(3) Outer guard band (OGB)  
This area is located at outer position of the user data area, and the rotational speed  
of the spindle can be controlled on this cylinder area for head moving.  
4-14  
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4.7 Servo Control  
Servo frame  
(124 servo frames per revolution)  
OGB  
IGB  
Data area  
expand  
CYLn  
CYLn – 1 (n: even number)  
CYLn + 1  
!" Diameter  
direction  
W/R Recovery  
Servo Mark  
Gray Code  
W/R Recovery  
Servo Mark  
Gray Code  
W/R Recovery  
Servo Mark  
Gray Code  
#
#
Erase  
Servo B  
Servo C  
Erase  
Servo A  
Erase  
Erase  
Servo B  
Servo A  
Erase  
Circumference  
Direction  
Erase  
Servo D  
PAD  
Servo C  
Erase  
Erase: DC erase  
area  
Figure 4.7 Physical sector servo configuration on disk surface  
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Theory of Device Operation  
4.7.3 Servo frame format  
As the servo information, the IDD uses the two-phase servo generated from the  
gray code and servo A to D. This servo information is used for positioning  
operation of radius direction and position detection of circumstance direction.  
The servo frame consists of 6 blocks; write/read recovery, servo mark, gray code,  
servo A to D, and PAD. Figure 4.8 shows the servo frame format.  
Figure 4.8 Servo frame format  
(1) Write/read recovery  
This area is used to absorb the write/read transient and to stabilize the AGC.  
(2) Servo mark  
This area generates a timing for demodulating the gray code and position-  
demodulating the servo A to D by detecting the servo mark.  
(3) Gray code (including sector address bits)  
This area is used as cylinder address. The data in this area is converted into the  
binary data by the gray code demodulation circuit  
(4) Servo A, servo B, servo C, servo D,  
This area is used as position signals between tracks and the IDD control at on-  
track so that servo A level equals to servo B level.  
(5) PAD  
This area is used as a gap between servo and data.  
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4.7 Servo Control  
4.7.4 Actuator motor control  
The voice coil motor (VCM) is controlled by feeding back the servo data recorded  
on the data surface. The MPU fetches the position sense data on the servo frame  
at a constant interval of sampling time, executes calculation, and updates the  
VCM drive current.  
The servo control of the actuator includes the operation to move the head to the  
reference cylinder, the seek operation to move the head to the target cylinder to  
read or write data, and the track-following operation to position the head onto the  
target track.  
(1) Operation to move the head to the reference cylinder  
The MPU moves the head to the reference cylinder when the power is turned.  
The reference cylinder is in the data area.  
When power is applied the heads are moved from the outside of media to the  
normal servo data zone in the following sequence:  
a) Micro current is fed to the VCM to press the head against the outer direction.  
b) The head is loaded on the disk.  
c) When the servo mark is detected the head is moved slowly toward the inner  
circumference at a constant speed.  
d) If the head is stopped at the reference cylinder from there. Track following  
control starts.  
(2) Seek operation  
Upon a data read/write request from the host, the MPU confirms the necessity of  
access to the disk. If a read/write instruction is issued, the MPU seeks the desired  
track.  
The MPU feeds the VCM current via the D/A converter and power amplifier to  
move the head. The MPU calculates the difference (speed error) between the  
specified target position and the current position for each sampling timing during  
head moving. The MPU then feeds the VCM drive current by setting the  
calculated result into the D/A converter. The calculation is digitally executed by  
the firmware. When the head arrives at the target cylinder, the track is followed.  
(3) Track-following operation  
Except during head movement to the reference cylinder and seek operation under  
the spindle rotates in steady speed, the MPU does track following control. To  
position the head at the center of a track, the DSP drives the VCM by feeding  
micro current. For each sampling time, the VCM drive current is determined by  
filtering the position difference between the target position and the position  
clarified by the detected position sense data. The filtering includes servo  
compensation. These are digitally controlled by the firmware.  
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Theory of Device Operation  
4.7.5 Spindle motor control  
Hall-less three-phase twelve-pole motor is used for the spindle motor, and the 3-  
phase full/half-wave analog current control circuit is used as the spindle motor  
driver (called SVC hereafter). The firmware operates on the MPU manufactured  
by Fujitsu. The spindle motor is controlled by sending several signals from the  
MPU to the SVC. There are three modes for the spindle control; start mode,  
acceleration mode, and stable rotation mode.  
(1) Start mode  
When power is supplied, the spindle motor is started in the following sequence:  
a) After the power is turned on, the MPU sends a signal to the SVC to charge  
the charge pump capacitor of the SVC. The charged amount defines the  
current that flows in the spindle motor.  
b) When the charge pump capacitor is charged enough, the MPU sets the SVC  
to the motor start mode. Then, a current (approx. 0.3 A) flows into the  
spindle motor.  
c) A phase switching signal is generated and the phase of the current flowed in  
the motor is changed in the order of (V-phase to U-phase), (W-phase to U-  
phase), (W-phase to V-phase), (U-phase to V-phase), (U-phase to W-phase),  
and (V-phase to W-phase) (after that, repeating this order).  
d) During phase switching, the spindle motor starts rotating in low speed, and  
generates a counter electromotive force. The SVC detects this counter  
electromotive force and reports to the MPU using a PHASE signal for speed  
detection.  
e) The MPU is waiting for a PHASE signal. When no phase signal is sent for a  
specific period, the MPU resets the SVC and starts from the beginning.  
When a PHASE signal is sent, the SVC enters the acceleration mode.  
(2) Acceleration mode  
In this mode, the MPU stops to send the phase switching signal to the SVC. The  
SVC starts a phase switching by itself based on the counter electromotive force.  
Then, rotation of the spindle motor accelerates. The MPU calculates a rotational  
speed of the spindle motor based on the PHASE signal from the SVC, and waits  
till the rotational speed reaches 5,400 rpm. When the rotational speed reaches  
5,400 rpm, the SVC enters the stable rotation mode.  
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4.7 Servo Control  
(3) Stable rotation mode  
The SVC calculates a time for one revolution of the spindle motor based on the  
PHASE signal. The MPU takes a difference between the current time and a time  
for one revolution at 4,200 rpm that the MPU already recognized. Then, the MPU  
keeps the rotational speed to 4,200 rpm by charging or discharging the charge  
pump for the different time. For example, when the actual rotational speed is  
4,000 rpm, the time for one revolution is 15.000 ms. And the time for one  
revolution at 4,200 rpm is 14.286 ms. Therefore, the MPU charges the charge  
pump for 0.714 ms × k (k: constant value). This makes the flowed current into  
the motor higher and the rotational speed up. When the actual rotational speed is  
faster than 4,200 rpm, the MPU discharges the pump the other way. This control  
(charging/discharging) is performed every 1 revolution.  
C141-E203-01EN  
4-19  
This page is intentionally left blank.  
CHAPTER 5 Interface  
5.1  
5.2  
5.3  
5.4  
5.5  
Physical Interface  
Logical Interface  
Host Commands  
Command Protocol  
Power-on and COMRESET  
This chapter gives details about the interface, and the interface commands and  
timings.  
C141-E203-01EN  
5-1  
Interface  
5.1 Physical Interface  
5.1.1 Interface signals  
Figure 5.1 shows the interface signals.  
TX data  
RX data  
TX+  
TX+  
TX data  
TX−  
TX−  
RX+  
RX data  
RX+  
Device  
analog  
front  
Host  
analog  
front  
end  
RX−  
RX−  
end  
ComWake  
ComWake  
ComInit  
ComReset  
+5VDC  
GND  
Figure 5.1 Interface signals  
An explanation of each signal is provided below.  
TX + / TX -  
These signals are the outbound high speed differential signals that are  
connected to the serial ATA cable.  
RX + / RX -  
These signals are the inbound high speed differential signals that are connected  
to the serial ATA cable.  
TxData  
Serially encoded 10b data attached to the high speed serial differential line  
driver  
5-2  
C141-E203-01EN  
5.1 Physical Interface  
RxData  
Serially encoded 10b data attached to the high speed serial differential line  
receiver  
COMWAKE  
Signal from the out of band detector that indicates the COMWAKE out of band  
signal is being detected.  
COMRESET / COMINIT  
Host:  
Signal from the out of band detector that indicates the COMINIT out  
of band signal is being detected.  
Device: Signal from the out of band detector that indicates the COMRESET  
out of band signal is being detected.  
5VDC/GND  
5VDC: +5 V power supply to the disk drive  
GND: Ground signal for each signal  
C141-E203-01EN  
5-3  
Interface  
5.1.2 Signal interface regulation  
5.1.2.1 Out of band signaling  
During OOB signaling transmissions, the differential and common mode levels of  
the signal lines shall comply with the same electrical specifications as for in-band  
data transmission, specified as follows.  
COMRESET/COMINIT  
106.7 ns  
320 ns  
COMWAKE  
106.7 ns  
106.7 ns  
5-4  
C141-E203-01EN  
5.1 Physical Interface  
5.1.2.2 Primitives descriptions  
The following table contains the primitive mnemonics and a brief description of  
each.  
Primitive  
ALIGN  
Name  
Description  
Physical layer control  
Upon receipt of an ALIGN, the physical layer  
readjusts internal operations as necessary to  
perform its functions correctly.  
EOF  
End of frame  
EOF marks the end of a frame.  
PMACK  
Power management  
acknowledge  
Sent in response to a PMREQ_S or  
PMREQ_P when a receiving node is prepared  
to enter a power mode state.  
PMNAK  
Power management  
denial  
Sent in response to a PMREQ_S or  
PMREQ_P when a receiving node is not  
prepared to enter a power mode state or when  
power management is not supported.  
PMREQ_P  
Power management  
request to partial  
This primitive is sent continuously until  
PMACK or PMNAK is received. When  
PMACK is received, current node (host or  
device) will stop PMREQ_P and enters the  
Partial power management state.  
PMREQ_S  
Power management  
request to Slumber  
This primitive is sent continuously until  
PMACK or PMNAK is received. When  
PMACK is received, current node (host or  
device) will stop PMREQ_S and enters the  
Slumber power management state.  
R_ERR  
R_OK  
R_RDY  
SOF  
Reception error  
Reception with no error  
Receiver ready  
Current node (host or device) detected error in  
received payload.  
Current node (host or device) detected no  
error in received payload.  
Current node (host or device) is ready to  
receive payload.  
Start of frame  
Start of a frame. Payload and CRC follow to  
EOF.  
SYNC  
Synchronization  
Synchronizing primitive - always idle.  
X_RDY  
Transmission data ready  
Current node (host or device) has payload  
ready for transmission.  
C141-E203-01EN  
5-5  
Interface  
5.1.3 Electrical specifications  
Table 5.1 Physical Layer Electrical Requirements (1/2)  
Nom  
Min  
Max  
Units  
ps  
Comments  
T,UI  
666.43 670.12  
Operating data period (nominal value  
architecture specific)  
0.3  
0.3  
250  
0.15  
0.15  
200  
0.41  
0.41  
450  
UI  
UI  
20%-80% at transmitter  
80%-20% at transmitter  
trise  
tfall  
mV  
Common mode DC level measured at  
receiver connector  
Vcm,dc  
0
0
2
2.0  
2.0  
200  
V
V
Transmitter common mode DC level  
measured at TX pins  
Vcm,ac coupled TX  
Vcm,ac coupled RX  
FCM  
Receiver common mode DC level  
measured at RX pins  
MHz Sinusoidal common-mode noise  
components inside this frequency range  
with an amplitude of Vcm,ac.  
10  
ns  
Maximum time for common-mode  
transients to and from the idle bus  
condition  
Tsettle,CM  
500  
400  
100  
400  
325  
85  
600  
+/- 250 mV differential nominal.  
Vdiff,tx  
mVp-p  
Measured at Serial ATA connector on  
transmit side  
600  
115  
+/- 200 mV differential nominal.  
Vdiff,rx  
mVp-p  
Measured at Serial ATA connector on  
receive side  
Tx pair  
differential  
impedance  
Ohm As seen by a differential TDR with 100 ps  
(max) edge looking into connector  
(20%-80%). Measured with TDR in  
differential mode.  
Rx pair  
differential  
impedance  
100  
85  
40  
115  
Ohm As seen by a differential TDR with 100 ps  
(max) edge looking into connector  
(20%-80%). Measured with TDR in  
differential mode.  
Tx single-ended  
impedance  
Ohm As seen by TDR with 100 ps (max) edge  
looking into connector (20%-80%).  
TDR set to produce simultaneous positive  
pulses on both signals of the Tx pair.  
5-6  
C141-E203-01EN  
5.1 Physical Interface  
Table 5.1 Physical Layer Electrical Requirements (2/2)  
Nom  
Min  
40  
Max  
Units  
Comments  
Rx single-ended  
impedance  
Ohm As seen by TDR with 100 ps (max) edge  
looking into connector (20%-80%).  
TDR set to produce simultaneous positive  
pulses on both signals of the Rx pair.  
12  
nF  
Coupling capacitance value for AC  
coupled TX and RX pairs  
CACcoupling  
TX DC clock  
frequency skew  
-350  
+350  
ppm Specifies the allowed ppm tolerance for  
TX DC frequency variations around the  
nominal 1.5GHz  
TX AC clock  
frequency skew  
-5000  
+0  
ppm Specifies the allowed ppm tolerance for  
TX AC frequency variations around the  
nominal 1.5GHz  
TX differential  
skew  
20  
ps  
Nominal value architecture specific  
Squelch  
detector  
threshold  
100  
320  
50  
200  
mVp-p Minimum differential signal amplitude  
COMRESET/C  
OMINIT  
detector off  
threshold  
175  
525  
336  
ns  
ns  
ns  
Detector shall reject all bursts with  
spacings outside this spec  
COMRESET/C  
OMINIT  
detector on  
threshold  
304  
Detector shall detect all bursts with  
spacings meeting this period  
COMRESET/C  
OMINIT  
320.0 310.4 329.6  
Differential crosspoints of last and first  
edges of bursts  
transmit  
spacing  
COMWAKE  
detector off  
threshold  
55  
175  
112  
ns  
ns  
ns  
ps  
Detector shall reject all bursts with  
spacings outside this spec  
COMWAKE  
detector on  
threshold  
106.7 101.3  
Detector shall detect all burst spacings  
meeting this period  
COMWAKE  
transmit  
spacing  
106.7 103.5 109.9  
646.67 686.67  
Differential crosspoints from last to first  
edges of bursts  
UIOOB  
Operating data period during OOB burst  
transmission  
C141-E203-01EN  
5-7  
Interface  
5.1.4 Connector pinouts  
The pin definitions are shown in Table 5.2.  
Table 5.2 Connector pinouts  
Signal segment key  
S1  
S2  
S3  
S4  
S5  
S6  
S7  
Gnd  
A+  
A-  
2nd mate  
Differential signal pair A from Phy  
Gnd  
B-  
2nd mate  
Differential signal pair B from Phy  
B+  
Gnd  
2nd mate  
Signal segment “L”  
Central connector polarizer  
Power segment “L”  
P1  
P2  
V33  
V33  
V33  
Gnd  
Gnd  
Gnd  
V5  
3.3 V power  
3.3 V power  
*1  
*1  
P3  
3.3 V power, pre-charge, 2nd mate  
*1  
P4  
1st mate  
P5  
2nd mate  
P6  
2nd mate  
P7  
5 V power, pre-charge, 2nd mate  
5 V power  
P8  
V5  
P9  
V5  
5 V power  
P10  
P11  
Gnd  
Reserved  
2nd mate  
The pin corresponding to P11 in the backplane  
receptacle connector is also reserved  
The corresponding pin to be mated with P11  
in the power cable receptacle connector shall  
be grounded  
P12  
Gnd  
V12  
V12  
V12  
1st mate  
P13  
12 V power, pre-charge, 2nd mate  
*1  
P14  
P15  
12 V power  
12 V power  
*1  
*1  
Power segment key  
Notes:  
*1 Since applying a single external supply voltage of 5V enables this  
drive to operate it is unnecessary to supply +3.3V and +12V power  
supplies.  
5-8  
C141-E203-01EN  
5.2 Logical Interface  
5.2 Logical Interface  
The host system and the device communicate with each other by sending and  
receiving serial data.  
The host and the device have several dedicated communication layers between  
them. These layers have different functions, enabling communication between the  
different levels of layers within the host or device and between layers at the same  
level that link the host and device.  
Figure 5.2 is a conceptual diagram of the communication layers.  
Application  
layer 4  
Device:  
Host:  
Software control  
Buffer memory  
DMA engine(s)  
Software control  
Buffer Memory  
DMA engine(s)  
Transport  
layer 3  
Shadow Block Register  
Block Register  
Transport Layer  
Transport Layer  
Link  
layer 2  
Link Layer  
Link Layer  
Physical  
layer 1  
Physical Layer  
Physical Layer  
Host located layers  
Device located layers  
Figure 5.2 Conceptual diagram of communication layers  
C141-E203-01EN  
5-9  
Interface  
5.2.1 Communication layers  
Each of the layers is outlined below.  
Physical layer  
Detects, sends, and receives band signals.  
Sends serial data to and receives it from the link layer.  
Link layer  
Negotiates against mutual transfer requests between the host system and  
device.  
Encodes serial data as 10- or 8-bit data, then converts it into DWORD data.  
Inserts auxiliary signals (SOF, CRC, and EOF), deletes auxiliary signals, and  
communicates with the transport and physical layers.  
Transport layer  
Exchanges data in communication with the link layer, and builds the frame  
information structure (FIS).  
Contains a (Shadow) Block Register.  
Reflects the FIS contents to the Block Register.  
5-10  
C141-E203-01EN  
5.2 Logical Interface  
5.2.2 Outline of the Shadow Block Register  
Each transport layer in the host system and device has a block register, which is  
called a Shadow Block Register in the host system, and a Block Register in the  
device.  
These registers are used when the host system issues a command to the device.  
Table 5.3 Shadow Block Register  
Command Block registers  
Read  
Error  
Write  
Data Port  
Features  
Sector Count (exp)  
Sector Count  
Sector Count (exp)  
Sector Count  
Sector Number (exp) Sector Number Sector Number (exp) Sector Number  
Cylinder Low (exp)  
Cylinder High (exp)  
Cylinder Low  
Cylinder High  
Cylinder Low (exp)  
Cylinder High (exp)  
Cylinder Low  
Cylinder High  
Device / Head  
Status  
Command  
Control Block registers  
Alternate Status  
Device Control  
Note: Each of the Sector Count, Sector Number, Cylinder Low, and Cylinder  
High fields has a higher-order field used for issuing the Ext command.  
The fields are called Sector Count exp, Sector Number exp, Cylinder Low  
exp, and Cylinder High exp, respectively. For information on writing data  
to these fields, see "Device Control Field."  
C141-E203-01EN  
5-11  
Interface  
5.2.3 Outline of the frame information structure (FIS)  
The transport layer converts data written in a Block Register into the FIS, and  
sends it to the upper layer.  
The FIS, which is generated in the transport layer, is explained below.  
5.2.3.1 FIS types  
The types of FIS are as follows:  
Register- Host to Device  
Register- Device to Host  
DMA Active – Device to Host  
DMA Setup – Device to Host or Host to Device (Bidirectional)  
Set Device Bits – Device to Host  
BIST Active – Bidirectional  
PIO Setup – Device to Host  
Data – Host to Device or Device to Host (Bidirectional)  
5.2.3.2 Register - Host to Device  
The Register - Host to Device FIS has the following layout:  
3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 9 8 7 6 5 4 3 2 1 0  
1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0  
Features  
Command  
C R R Reserved (0)  
FIS Type (27h)  
0
1
2
3
4
Device  
LBA High  
LBA Mid  
LBA Low  
Features (exp)  
Control  
LBA High (exp)  
Reserved (0)  
Reserved (0)  
LBA Mid (exp)  
Sector Count (exp)  
Reserved (0)  
LBA Low (exp)  
Sector Count  
Reserved (0)  
Reserved (0)  
Figure 5.3 Register - Host to Device FIS layout  
5-12  
C141-E203-01EN  
5.2 Logical Interface  
The host system uses the Register - Host to Device FIS when information in the  
Register Block is transferred from the host system to the device. This is the  
mechanism for issuing the ATA command from the host system to the device.  
C - To update the Command field, "1" would be set in this field; and to update the  
Device Control field, "0" would be set in the field.  
If both C = 1 and SRST = 1 are set, operation is not guaranteed.  
5.2.3.3 Register - Device to Host  
The Register - Device to Host FIS has the following layout:  
3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 9 8 7 6 5 4 3 2 1 0  
1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0  
Error  
Status  
R I R Reserved (0)  
FIS Type (34h)  
0
1
2
3
4
Device  
LBA High  
LBA Mid  
LBA Low  
Reserved (0)  
Reserved (0)  
Reserved (0)  
LBA High (exp)  
Reserved (0)  
Reserved (0)  
LBA Mid (exp)  
Sector Count (exp)  
Reserved (0)  
LBA Low (exp) (0)  
Sector Count  
Reserved (0)  
Figure 5.4 Register - Device to Host FIS layout  
The Register - Device to Host FIS is used when information concerning the Shadow  
Register Block in the host adapter is updated. This FIS indicates that the device has  
completed a command operation. Furthermore, this is a mechanism for changing  
information concerning the Shadow Register Block of the host adapter.  
I - If this bit is set, an interrupt request is issued to the host system.  
5.2.3.4 DMA Active - Device to Host  
The DMA Active - Device to Host FIS has the following layout:  
3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 9 8 7 6 5 4 3 2 1 0  
1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0  
Reserved (0)  
Reserved (0)  
R R R Reserved (0)  
FIS Type (39h)  
0
Figure 5.5 DMA Active - Device to Host FIS layout  
C141-E203-01EN  
5-13  
Interface  
The host uses the DMA Active - Device to Host FIS layout. This FIS instructs the  
host to continue transferring DMA data from the host to the device.  
5.2.3.5 DMA Setup - Device to Host or Host to Device (Bidirectional)  
The DMA Setup - Device to Host or Host to Device FIS has the following layout:  
3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 9 8 7 6 5 4 3 2 1 0  
1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0  
Reserved (0)  
Reserved (0)  
A I D Reserved (0)  
FIS Type (41h)  
0
1
2
3
4
5
6
0
TAG  
0
Reserved (0)  
DMA Buffer Offset  
DMA Transfer Count  
Reserved (0)  
Figure 5.6 DMA Setup - Device to Host or Host to Device FIS layout  
The DMA Setup - Device to Host or Host to Device FIS communicates the start of  
a first-party DMA access to the host system. This FIS is used to request the host  
system or device to set up the DMA controller before the start of a DMA data  
transfer.  
A - Auto Active bit. If this bit is cleared ("0" is set for the bit), it indicates that a  
DMA Active FIS transfer is required before a Data FIS transfer.  
D - Direction bit. If this bit is set ("1" is set for the bit), it indicates that the data  
transfer direction is from the device to the host system.  
5-14  
C141-E203-01EN  
5.2 Logical Interface  
5.2.3.6 BIST Active - Bidirectional  
The BIST Active - Bidirectional FIS has the following layout:  
3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 9 8 7 6 5 4 3 2 1 0  
1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0  
Reserved (0)  
Data [31:24]  
Data [31:24]  
Pattern definition  
R R R Reserved (0)  
FIS Type (58h)  
0
1
2
T A S L F P R V  
Data [23:16]  
Data [23:16]  
Data [23:16]  
Data [7:0]  
Data [23:16]  
Data [7:0]  
Figure 5.7 BIST Active - Bidirectional FIS layout  
The BIST Active - Bidirectional FIS is used to set the receiver to Loop Back mode.  
This FIS can be sent by either the host system or device.  
The following combinations of pattern definitions are supported:  
Table 5.4 BIST combinations  
SC  
Reg  
T
A
S
L
F
P
V
Contents  
-
-
-
-
-
-
1
1
-
-
-
-
1
-
09h SATA Phy Analog Loopback Mode  
10h Far End Retimed Loopback Mode  
C0h No ALIGN Transmit_only Mode (Scramble ON)  
(*1)  
1
1
1
1
1
1
-
1
-
-
-
-
-
-
-
-
-
-
-
-
E0h No ALIGN Transmit_only Mode (Scramble OFF)  
C4h No ALIGN Transmit_only with primitive Mode  
(Scramble ON) (*1)  
1
E4h No ALIGN Transmit_only with primitive Mode  
(Scramble OFF)  
1
1
1
-
-
1
-
1
1
-
-
-
-
-
-
-
-
-
-
-
80h ALIGN Transmit_only Mode (Scramble ON) (*1)  
A0h ALIGN Transmit_only Mode (Scramble OFF)  
1
84h ALIGN Transmit_only with primitive Mode  
(Scramble ON) (*1)  
1
1
-
-
-
-
-
-
-
1
1
-
-
A4h ALIGN Transmit_only with primitive Mode  
(Scramble OFF)  
1
C141-E203-01EN  
5-15  
Interface  
5.2.3.7 Data - Host to Device or Device to Host (Bidirectional)  
This Data FIS has the following layout:  
3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 9 8 7 6 5 4 3 2 1 0  
1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0  
Reserved (0)  
Reserved (0)  
R R R Reserved (0)  
FIS Type (46h)  
0
n
N Dwords of data  
(1 to 2048 Dwords)  
Figure 5.8 Data FIS (Bidirectional) layout  
The Data FIS is used for data transfers between the host system and device.  
5-16  
C141-E203-01EN  
5.2 Logical Interface  
5.2.4 Shadow block registers  
(1) Error Field  
The Error Field indicates the status of the command executed by the device.  
The fields are valid when the ERR bit of the Status field is 1.  
This register contains a diagnostic code after power is turned on, the Com Reset, or  
the EXECUTIVE DEVICE DIAGNOSTIC command is executed.  
[Status at the completion of command execution other than diagnostic  
command]  
Bit 7  
X
Bit 6  
UNC  
Bit 5  
X
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
IDNF/ SFRW  
SFRR  
ABRT TK0NF AMNF  
X:  
Unused  
- Bit 7: Unused  
- Bit 6: Uncorrectable Data Error (UNC). This bit indicates that an  
uncorrectable data error has been encountered.  
SATA Frame Error Write (SF RW). This bit indicates that a SATA  
communication error has been encountered during the write process.  
- Bit 5: Unused  
- Bit 4: ID Not Found (IDNF). This bit indicates an error except for bad sector,  
uncorrectable error and SB not found.  
Or, SATA Frame Error Write (SFRW) This bit indicates that a SATA  
communication error has been encountered during the write process.  
In this case, bit4 and bit2 are set both.  
- Bit 3: SATA Frame Error Read (SF RR). This bit indicates that a SATA  
communication error has been encountered during the read process.  
In this case, bit3 and bit2 are set both.  
- Bit 2: Aborted Command (ABRT). This bit indicates that the requested  
command was aborted due to a device status error (e.g. Not Ready,  
Write Fault) or the command code was invalid.  
- Bit 1: Track 0 Not Found (TK0NF). This bit indicates that track 0 was not  
found during RECALIBRATE command execution.  
- Bit 0: Address Mark Not Found (AMNF). This bit indicates that the SB Not  
Found error occurred.  
[Diagnostic code]  
- X’00’: Format Unit is not completed.  
- X’01’: No Error Detected.  
- X’02’: HDC Diagnostic Error  
C141-E203-01EN  
5-17  
Interface  
- X’03’: Data Buffer Diagnostic Error.  
- X’04’: Memory Diagnostic Error.  
- X’05’: Reading the system area is abnormal.  
- X’06’: Calibration is abnormal.  
(2) Features Field (exp)  
The Features Field provides specific feature to a command. For instance, it is used  
with SET FEATURES command to enable or disable caching.  
(3) Sector Count Field (exp)  
The Sector Count Field indicates the number of sectors of data to be transferred in  
a read or write operation between the host system and the device. When the value  
in this field is X’00’, the sector count is 256. With the EXT system command, the  
sector count is 65536 when value of the Sector Count Field is X'00' and that of the  
Sector Count Field (exp) is X’00’.  
When this field indicates 0 at the completion of the command execution, this  
indicates that the command is completed successfully. If the command is not  
completed successfully, this field indicates the number of sectors to be transferred  
to complete the request from the host system. That is, this field indicates the  
number of remaining sectors that the data has not been transferred due to the error.  
However, as of the last sector of PIO transfer, SC=1 indicates the normal  
completion.  
The contents of this field also have other definitions (Refer to 5.4)  
(4) Sector Number Field (exp)  
The contents of this field indicates the starting sector number for the subsequent  
command. The sector number should be between X’01’ and [the number of  
sectors per track defined by INITIALIZE DEVICE PARAMETERS command.  
Under the LBA mode, this field indicates LBA bits 7 to 0. Under the LBA mode  
of the EXT system command, LBA bits 31 to 24 are set in the Sector Number  
Field, and LBA bits 7 to 0 are set in the Sector Number Field (exp).  
(5) Cylinder Low Field (exp)  
The contents of this field indicates low-order 8 bits of the starting cylinder address  
for any disk-access.  
At the end of a command, the contents of this field are updated to the current  
cylinder number.  
Under the LBA mode, this field indicates LBA bits 15 to 8. Under the LBA mode  
of the EXT system command, LBA bits 39 to 32 are set in the Cylinder Low Field,  
and LBA bits 15 to 8 are set in the Cylinder Low Field (exp).  
5-18  
C141-E203-01EN  
5.2 Logical Interface  
(6) Cylinder High Field (exp)  
The contents of this field indicates high-order 8 bits of the disk-access start  
cylinder address.  
At the end of a command, the contents of this field are updated to the current  
cylinder number. The high-order 8 bits of the cylinder address are set to the  
Cylinder High Register.  
Under the LBA mode, this field indicates LBA bits 23 to 16. Under the LBA mode  
of the EXT system command, LBA bits 47 to 40 are set in the Cylinder High Field,  
and LBA bits 23 to 16 are set in the Cylinder High Field (exp).  
(7) Device/Head Field  
The contents of this field indicate the device and the head number.  
When executing INITIALIZE DEVICE PARAMETERS command, the contents of  
this field defines “the number of heads minus 1” (a maximum head No.).  
Bit 7  
X
Bit 6  
L
Bit 5  
X
Bit 4  
X
Bit 3  
HS3  
Bit 2  
HS2  
Bit 1  
HS1  
Bit 0  
HS0  
- Bit 7: Unused  
- Bit 6: L.  
0 for CHS mode and 1 for LBA mode.  
- Bit 5: Unused  
- Bit 4: Unused  
- Bit 3: HS3  
CHS mode head address 3 (23). bit 27 for LBA mode.  
Unused under the LBA mode of the EXT command.  
- Bit 2: HS2  
- Bit 1: HS1  
- Bit 0: HS0  
CHS mode head address 2 (22). bit 26 for LBA mode.  
Unused under the LBA mode of the EXT command.  
CHS mode head address 1 (21). bit 25 for LBA mode.  
Unused under the LBA mode of the EXT command.  
CHS mode head address 0 (20). bit 24 for LBA mode.  
Unused under the LBA mode of the EXT command.  
C141-E203-01EN  
5-19  
Interface  
(8) Status field  
The contents of this field indicate the status of the device. The contents of this  
field are updated at the completion of each command. When the BSY bit is 1,  
other bits of this field, are invalid.  
Bit 7  
BSY  
Bit 6  
Bit 5  
DF  
Bit 4  
DSC  
Bit 3  
DRQ  
Bit 2  
0
Bit 1  
0
Bit 0  
ERR  
DRDY  
- Bit 7:  
Busy (BSY) bit.  
This bit is set whenever the Command filed of the shadow block registers for the  
host system is accessed.  
Then this bit is cleared when the command is completed. However, even if a  
command is being executed, this bit is cleared during the PIO data transfer request.  
When BSY bit is 1, the host system should not write the shadow block registers.  
This bit is set by the device under following conditions:  
(a) After COMRESET or SRST is set in the Device Control Field, the BSY bit is  
set, then the BSY bit is cleared, when the COMRESET process is completed.  
The BSY bit is set for no longer than 15 seconds after the IDD accepts reset.  
Device Ready (DRDY) bit.  
- Bit 6:  
- Bit 5:  
This bit indicates that the device is capable to respond to a command.  
The IDD checks its status when it receives a command. If an error is detected (not  
ready state), the IDD clears this bit to 0. This is cleared to 0 at power-on and it is  
cleared until the rotational speed of the spindle motor reaches the steady speed.  
Device Write Fault (DF) bit.  
This bit indicates that a device fault (write fault) condition has been detected.  
If a write fault is detected during command execution, this bit is latched and  
retained until the device accepts the next command or reset.  
- Bit 4:  
- Bit 3:  
Device Seek Complete (DSC) bit.  
This bit indicates that the device heads are positioned over a track.  
In the IDD, this bit is always set to 1 after the spin-up control is completed.  
Data Request (DRQ) bit.  
This bit indicates that the device is ready to transfer PIO data of word unit or byte  
unit between the host system and the device.  
- Bit 2:  
- Bit 1:  
- Bit 0:  
Always 0.  
Always 0.  
Error (ERR) bit.  
This bit indicates that an error was detected while the previous command was  
being executed. The Error field indicates the additional information of the cause  
for the error.  
5-20  
C141-E203-01EN  
5.2 Logical Interface  
(9) Command Field  
The Command Field contains a command code being sent to the device. After this  
field is written, the command execution starts immediately.  
Table 5.3 lists the executable commands and their command codes. This table also  
lists the necessary parameters for each command which are written to certain fields  
before the Command register is written.  
(10) Device Control Field  
The Device Control Field contains software reset.  
Bit 7  
X
Bit 6  
X
Bit 5  
X
Bit 4  
X
Bit 3  
X
Bit 2  
Bit 1  
X
Bit 0  
0
SRST  
- Bit 2:  
Software Reset (SRST)  
This is the host software reset bit. When this bit is set, the device is held reset state.  
The slave device is not required to execute the DASP- handshake.  
(11) E_Status Field  
This field is in the PIO Setup FIS. The field contents are the same as those  
described in (8), "Status Field." However, the values in the Status field are those  
before a PIO data transfer, and the values in the E_Status field are those when a  
PIO data transfer is completed.  
(12) DMA Buffer Offset Field  
This field is in the DMA Setup FIS, representing byte offset. Since this device  
does not support byte offset, 0 is always set for the field.  
(13) DMA Transfer Count Field  
This field is in the DMA Setup FIS, representing the number of bytes to be  
transferred.  
(14) Active Field  
This field is in the Set Device Bits FIS. Each bit number corresponds to the tag  
number of one of 32 commands that can be placed in a queue, and the bit setting of  
"1" indicates that the corresponding command is completed.  
C141-E203-01EN  
5-21  
Interface  
5.3 Host Commands  
The host system issues a command to the device by writing necessary parameters  
in related fileds in the shadow block registers and writing a command code in the  
Command field of the shadow block registers.  
The device can accept the command when the BSY bit is 0 (the device is not in the  
busy status).  
The host system can halt the uncompleted command execution only at execution of  
hardware or software reset.  
When the BSY bit is 1 or the DRQ bit is 1 (the device is requesting the PIO data  
transfer) and the host system writes to the command field of the shadow block  
register, the correct device operation is not guaranteed.  
5.3.1 Command code and parameters  
Table 5.5 lists the supported commands, command code and the related fields to be  
written necessary parameters at command execution.  
Table 5.5 Command code and parameters (1/3)  
COMMAND CODE (Bit)  
PARAMETER USED  
COMMAND NAME  
RECALIBRATE  
7
0
0
0
0
0
0
0
0
1
1
1
6
0
0
0
0
0
0
1
1
0
0
0
5
0
1
1
1
1
1
0
1
0
0
0
4
1
0
0
1
1
1
0
1
1
1
1
3
X
0
0
0
0
1
0
X
0
0
0
2
X
0
0
0
0
1
0
X
0
0
0
1
X
0
1
0
1
0
0
X
0
0
1
0
X
R
R
R
R
0
FR SC SN CY DH  
N
N
N
N
N
N
N
N
N
N
Y
N
Y
Y
Y
Y
Y
Y
N
N
Y
Y
N
Y
Y
Y
Y
Y
Y
Y
N
N
Y
N
Y
Y
Y
Y
Y
Y
Y
N
N
N
D
Y
Y
Y
Y
Y
Y
Y
N
Y
D
READ SECTOR(S)  
READ LONG  
WRITE SECTOR(S)  
WRITE LONG  
WRITE VERIFY  
READ VERIFY SECTOR(S)  
SEEK  
R
X
0
EXECUTE DEVICE DIAGNOSTIC  
INITIALIZE DEVICE PARAMETERS  
DOWNLOAD MICROCODE  
1
0
1
1
0
1
0
1
1
0
0
0
1
0
0
0
0
0
STANDBY IMMEDIATE  
IDLE IMMEDIATE  
STANDBY  
N
Y
N
N
N
Y
N
Y
N
N
Y
N
D
D
D
1
1
0
1
0
1
1
0
0
0
1
0
0
0
1
1
1
1
0
1
0
1
1
0
0
0
1
0
1
1
0
0
5-22  
C141-E203-01EN  
5.3 Host Commands  
Table 5.5 Command code and parameters (2/3)  
COMMAND CODE (Bit)  
PARAMETER USED  
COMMAND NAME  
7
6
5
4
3
2
1
0
FR SC SN CY DH  
1
1
0
1
0
1
1
0
0
0
1
0
1
1
1
1
IDLE  
N
N
N
Y
N
N
N
N
N
N
N
N
D
D
D
1
1
0
1
0
1
1
0
1
0
0
1
0
0
0
1
CHECK POWER MODE  
SLEEP  
1
1
0
1
0
1
1
0
1
0
0
1
0
1
1
0
SMART  
1
1
0
0
1
1
1
1
0
0
0
0
0
0
0
1
Y
Y
Y
N
Y
N
Y
N
D
D
DEVICE CONFIGURATION  
READ MULTIPLE  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
0
0
0
1
1
0
0
1
1
1
1
0
0
0
0
0
1
1
1
0
0
1
1
0
1
1
1
0
0
0
1
1
0
0
1
0
1
0
1
0
0
1
1
0
1
1
0
0
0
1
0
R
R
0
1
0
0
0
1
1
0
1
0
1
N
N
N
N
N
N
N
N
N
N
Y
N
N
N
N
N
Y
Y
Y
Y
Y
N
N
N
N
N
N*  
N
N
N
N
N
Y
Y
N
Y
Y
N
N
N
N
N
N
N
N
N
N
N
Y
Y
N
Y
Y
N
N
N
N
N
N
N
N
N
N
N
Y
Y
D
Y
Y
D
D
D
D
D
D
D
D
D
D
D
WRITE MULTIPLE  
SET MULTIPLE MODE  
READ DMA  
WRITE DMA  
READ BUFFER  
FLUSH CACHE  
WRITE BUFFER  
IDENTIFY DEVICE  
IDENTIFY DEVICE DMA  
SET FEATURES  
SECURITY SET PASSWORD  
SECURITY UNLOCK  
SECURITY ERASE PREPARE  
SECURITY ERASE UNIT  
SECURITY FREEZE LOCK  
SECURITY DISABLE  
PASSWORD  
1
1
1
1
0
1
1
0
N
N
N
N
D
READ NATIVE MAX ADDRESS  
SET MAX  
1
1
0
0
1
1
0
0
1
1
1
1
1
1
0
0
1
1
0
0
0
0
1
1
0
0
0
0
0
1
0
1
N
N
N
N
N
Y
Y
Y
N
Y
Y
Y
N
Y
Y
Y
D
Y
D
D
READ SECTOR(S) EXT  
READ DMA EXT  
READ NATIVE MAX ADDRESS  
EXT  
0
0
0
0
1
1
0
0
0
1
1
0
1
0
1
1
N
N
N
Y
N
Y
N
Y
D
D
READ MULTIPLE EXT  
C141-E203-01EN  
5-23  
Interface  
Table 5.5 Command code and parameters (3/3)  
COMMAND CODE (Bit)  
PARAMETER USED  
FR SC SN CY DH  
COMMAND NAME  
7
0
0
0
0
0
0
0
1
1
0
0
0
6
0
0
0
0
0
0
1
1
1
0
1
1
5
1
1
1
1
1
1
0
1
0
1
1
1
4
0
1
1
1
1
1
0
0
0
1
0
0
3
1
0
0
0
1
1
0
1
1
1
0
0
2
1
1
1
1
0
1
0
0
1
1
0
0
1
1
0
0
1
0
1
1
1
1
0
0
0
0
1
0
1
1
1
1
0
0
0
1
0
1
READ LOG EXT  
N
N
N
N
N
N
N
N
N
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
Y
Y
Y
Y
D
D
D
Y
D
D
D
D
D
D
D
D
WRITE SECTOR(S) EXT  
WRITE DMA EXT  
SET MAX ADDRESS EXT  
WRITE MULTIPLE EXT  
WRITE LOG EXT  
READ VERIFY SECTOR(S) EXT  
FLUSH CACHE EXT  
WRITE MULTIPLE FUA EXT  
WRITE DMA FUA EXT  
READ FP DMA QUEUED  
WRITE FP DMA QUEUED  
CY: cylinder field  
DH: device/head field  
FR: features field  
SC: sector count field  
SN: sector number field  
R: Retry at error  
1 = Without retry  
0 = With retry  
Y: Necessary to set parameters  
Y*: Necessary to set parameters under the LBA mode.  
N: Not necessary to set parameters (The parameter is ignored if it is  
set.)  
N*: May set parameters  
D: The device parameter is valid, and the head parameter is ignored.  
X: Do not care  
5-24  
C141-E203-01EN  
5.3 Host Commands  
5.3.2 Command descriptions  
The contents of the shadow block registers to be necessary for issuing a command  
and the example indication of the shadow block registers at command completion  
are shown as following in this subsection.  
Example: READ SECTOR (S)  
At command issuance  
At command completion  
(Shadow Block Registers setting contents)  
(Shadow Block Registers to be read)  
Bit  
CM  
7
0
x
6
0
5
1
x
4
0
x
3
0
2
0
1
0
0
0
Bit  
ST  
7
x
6
5
4
3
2
1
0
Status information  
HD No./LBA  
LBA(47-40)  
DH  
L
HD No./LBA  
DH  
L
x
x
CH EXP  
LBA(47-40)  
CH EXP  
Start cylinder address  
[MSB] / LBA(23-16)  
End cylinder address  
[MSB] / LBA(23-16)  
CH  
CL EXP  
CL  
CH  
CL EXP  
CL  
LBA(39-32)  
LBA(39-32)  
Start cylinder address  
[LSB] / LBA(15-8)  
End cylinder address  
[LSB] / LBA(15-8)  
SN EXP  
SN  
LBA(31-24)  
Start sector No. / LBA (7-0)  
Transfer sector count (15-8)  
Transfer sector count (7-0)  
xx  
SN EXP  
SN  
LBA(31-24)  
End sector No. / LBA (7-0)  
SC EXP  
SC  
SC EXP  
SC  
X ' 00 '  
X ' 00 '  
FR EXP  
FR  
ER  
Error information  
xx  
CH (EXP): Cylinder High Field (EXP)  
CL (EXP): Cylinder Low Field (EXP)  
CM:  
DH:  
ER:  
Command Field  
Device/Head Field  
Error Field  
FR (EXP):  
L:  
Features Field (EXP)  
LBA (Logical Block Address) setting bit  
SN (EXP): Sector Number Field (EXP)  
SC (EXP):  
ST:  
Sector Count Field (EXP)  
Status Field  
x, xx:  
Don't care (setting is not necessary)  
Note:  
1. When the L bit is specified to 1, the lower 4 bits of the DH  
field and all bits of the CH field, CL and SN fields indicate the  
LBA bits (bits of the DH filed are the MSB (most significant  
bit) and bits of the SN field are the LSB (least significant bit).  
2. At error occurrence, the SC field indicates the remaining sector  
count of data transfer.  
3. Bit indication is omitted in each command description.  
C141-E203-01EN  
5-25  
Interface  
(1) RECALIBRATE (X’10’ to X’1F’)  
This command performs the calibration. When the device completes the  
calibration, the device reports the status to the host system.  
This command can be issued in the LBA mode.  
Error reporting conditions  
(1) An error was detected during head positioning (ST = 51h, ER = 02h).  
(2) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
0
x
0
x
0
x
1
x
x
x
x
x
xx  
xx  
xx  
xx  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
Note:  
Also executable in LBA mode.  
5-26  
C141-E203-01EN  
5.3 Host Commands  
(2) READ SECTOR(S) (X’20’ or X’21’)  
This command reads data of sectors specified in the Sector Count field from the  
address specified in the Device/Head, Cylinder High, Cylinder Low and Sector  
Number fields. Number of sectors can be specified from 1 to 256 sectors. To  
specify 256 sectors reading, ‘00’ is specified. For the protocols related to data  
transfer, see Subsection 5.4.1.  
If the head is not on the track specified by the host, the device performs an implied  
seek. After the head reaches to the specified track, the device reads the target  
sector.  
If an error occurs, retry reads are attempted to read the target sector before  
reporting an error, irrespective of the R bit setting.  
If an error does not occur, PIO Setup is always transferred prior to the data  
transfer.  
Upon the completion of the command execution, shadow block registers contain  
the cylinder, head, and sector addresses (in the CHS mode) or logical block  
address (in the LBA mode) of the last sector read.  
If an unrecoverable disk read error occurs in a sector, the read operation is terminated at  
the sector where the error occurred. Shadow block registers contain the cylinder, the  
head, and the sector addresses of the sector (in the CHS mode) or the logical block  
address (in the LBA mode) where the error occurred, and remaining number of  
sectors of which data was not transferred (including sector when the error  
occurred).  
Error reporting conditions  
(1) A specified address exceeds the range where read operations are allowed  
(ST = 51h, ER = 10h).  
(2) The range where read operations are allowed will be exceeded by an address  
during a read operation (ST = 51h, ER = 10h).  
(3) An uncorrectable disk read error occurred (ST = 51h, ER = 40h).  
(4) The sync byte indicating the beginning of a sector was not found  
(ST = 51h, ER = 01h).  
(5) A communication error occurred (ST = 51h, ER = 0Ch).  
(6) An error other than the above errors occurred (ST = 51h, ER = 04h).  
C141-E203-01EN  
5-27  
Interface  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
x
0
1
x
0
x
0
0
0
R
L
HDNo. /LBA  
CH  
Start cylinder No. [MSB] / LBA  
Start cylinder No. [LSB] / LBA  
CL  
SN  
Start sector No.  
Transfer sector count  
xx  
/ LBA [LSB]  
SC  
FR  
(R: Retry)  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
HDNo. /LBA  
x
L
x
x
End cylinder No. [MSB] / LBA  
End cylinder No. [LSB] / LBA  
End sector No.  
/ LBA [LSB]  
01 (*1)  
Error information  
*1 If the command is terminated due to an error, the remaining number  
of sectors of which data was not transferred.  
5-28  
C141-E203-01EN  
5.3 Host Commands  
(3) READ LONG (X’22’ or X’23’)  
This command operates similarly to the READ SECTOR(S) command except that  
the device transfers the data in the requested sector and the ECC bytes to the host  
system. The ECC error correction is not performed for this command. This command  
is used for checking ECC function by combining with the WRITE LONG command.  
The READ LONG command supports only single sector operation.  
Number of ECC bytes to be transferred is fixed to 4 bytes and cannot be changed  
by the SET FEATURES command.  
Error reporting conditions  
(1) A specified address exceeds the range where read operations are allowed  
(ST = 51h, ER = 10h).  
(2) A value other than 01h is specified in the SC field (ST = 51h, ER = 04h).  
(3) The sync byte indicating the beginning of a sector was not found  
(ST = 51h, ER = 01h).  
(4) A SATA communication error occurred (ST = 51h, ER = 0Ch).  
(5) An error other than the above errors occurred (ST = 51h, ER = 04h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
x
0
1
x
0
x
0
0
1
R
L
HD No. /LBA  
CH  
CL  
SN  
SC  
FR  
Cylinder No. [MSB] / LBA  
Cylinder No. [LSB] / LBA  
Sector No.  
/ LBA [LSB]  
01  
xx  
(R: Retry)  
At command completion (Shadow Block Registers contents to be read)  
ST  
Status information  
HD No. /LBA  
DH  
x
L
x
x
CH  
CL  
SN  
SC  
ER  
Cylinder No. [MSB] / LBA  
Cylinder No. [LSB] / LBA  
Sector No.  
/ LBA [LSB]  
xx  
Error information  
C141-E203-01EN  
5-29  
Interface  
(4) WRITE SECTOR(S) (X’30’ or X’31’)  
This command writes data of sectors from the address specified in the  
Device/Head, Cylinder High, Cylinder Low, and Sector Number fields to the  
address specified in the Sector Count field. Number of sectors can be specified  
from 1 to 256 sectors. A sector count of 0 requests 256 sectors. Data transfer  
begins at the sector specified in the Sector Number field. For the protocols related  
to data transfer, see Subsection 5.4.3.  
If the head is not on the track specified by the host, the device performs an implied  
seek. After the head reaches to the specified track, the device writes the target  
sector.  
If an error occurs when writing to the target sector, retries are attempted  
irrespectively of the R bit setting.  
The data stored in the buffer, and CRC code and ECC bytes are written to the data  
field of the corresponding sector(s).  
Upon the completion of the command execution, the shadow block registers  
contain the cylinder, head, and sector addresses of the last sector written.  
If an disk error occurs during multiple sector write operation, the write operation is  
terminated at the sector where the error occurred. Shadow block registers contain  
the cylinder, the head, the sector addresses (in the CHS mode) or the logical block  
address (in the LBA mode) of the sector where the error occurred.  
Error reporting conditions  
(1) A specified address exceeds the range where write operations are allowed  
(after a transfer of dummy data, ST = 51h, ER = 10h).  
(2) The range where write operations are allowed will be exceeded by an address  
during a write operation (after a transfer of dummy data, ST = 51h, ER = 10h).  
(3) A write fault was detected when the write cache was disabled  
(ST = 71h, ER = 10h).  
(4) While the write cache is enabled, if the status indicating a completed transfer  
(STS = 50h) is returned and a data write operation failed because a write fault  
was detected during the data write operation, Abort will be returned for all  
subsequent ATA commands (ST = 71h, ER = 04h). This state is cleared the  
next time that the device is turned on.  
(5) A SATA communication error occurred (ST = 51h, ER = 14h).  
(6) An error other than the above errors occurred (ST = 51h, ER = 04h).  
5-30  
C141-E203-01EN  
5.3 Host Commands  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
x
0
1
x
1
x
0
0
0
R
L
HDNo. /LBA  
CH  
Start cylinder No. [MSB] / LBA  
Start cylinder No. [LSB] / LBA  
CL  
SN  
Start sector No.  
Transfer sector count  
xx  
/ LBA [LSB]  
SC  
FR  
(R: Retry)  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
HDNo. /LBA  
x
L
x
x
End cylinder No. [MSB] / LBA  
End cylinder No. [LSB] / LBA  
End sector No.  
/ LBA [LSB]  
00 (*1)  
Error information  
*1 If the command was terminated because of an error, the number  
of sectors for which data has not been written is set in this field.  
C141-E203-01EN  
5-31  
Interface  
(5) WRITE LONG (X’32’ or X’33’)  
This command operates similarly to the WRITE SECTOR(S) command except that  
the device writes the data and the ECC bytes transferred from the host system to  
the disk medium. The device does not generate ECC bytes by itself. The WRITE  
LONG command supports only single sector operation.  
The number of ECC bytes to be transferred is fixed to 4 bytes and can not be  
changed by the SET FEATURES command.  
This command is operated under the following conditions:  
READ LONG issued WRITE LONG (Same address) issues sequence  
(After READ LONG is issued, WRITE LONG can be issued consecutively.)  
If the above condition is not satisfied, WRITE LONG Data becomes an  
uncorrectable error for subsequent READ command.  
Error reporting conditions  
(1) A specified address exceeds the range where write operations are allowed  
(after a transfer of dummy data, ST = 51h, ER = 10h).  
(2) The range where write operations are allowed will be exceeded by an address  
during a write operation (after a transfer of dummy data, ST = 51h, ER = 10h).  
(3) A write fault was detected when the write cache was disabled  
(ST = 71h, ER = 10h).  
(4) While the write cache is enabled, if the status indicating a completed transfer  
(STS = 50h) is returned and a data write operation failed because a write fault  
was detected during the data write operation, Abort will be returned for all  
subsequent ATA commands (ST = 71h, ER = 04h). This state is cleared the  
next time that the device is turned on.  
(5) A SATA communication error occurred (ST = 51h, ER = 14h).  
(6) An error other than the above errors occurred (ST = 51h, ER = 04h).  
5-32  
C141-E203-01EN  
5.3 Host Commands  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
0
x
0
1
x
1
x
0
0
1
R
L
HD No. /LBA  
Cylinder No. [MSB] / LBA  
Cylinder No. [LSB] / LBA  
Sector No.  
/ LBA [LSB]  
01  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
HD No. /LBA  
x
L
x
x
Cylinder No. [MSB] / LBA  
Cylinder No. [LSB] / LBA  
Sector No.  
/ LBA [LSB]  
xx  
Error information  
C141-E203-01EN  
5-33  
Interface  
(6) WRITE VERIFY (X’3C’)  
This command operates similarly to the WRITE SECTOR(S) command except that  
the device verifies each sector immediately after being written. The verify  
operation is a read and check for data errors without data transfer. Any error that  
is detected during the verify operation is posted.  
After all sectors are verified, device reports the status to the host system.  
Error reporting conditions  
(1) A specified address exceeds the range where write operations are allowed  
(after a transfer of dummy data, ST = 51h, ER = 10h).  
(2) The range where write operations are allowed will be exceeded by an address  
during a write operation (after a transfer of dummy data, ST = 51h, ER = 10h).  
(3) A write fault was detected when the write cache was disabled  
(ST = 71h, ER = 10h).  
(4) While the write cache is enabled, if the status indicating a completed transfer  
(STS = 50h) is returned and a data write operation failed because a write fault  
was detected during the data write operation, Abort will be returned for all  
subsequent ATA commands (ST = 71h, ER = 04h). This state is cleared the  
next time that the device is turned on.  
(5) An uncorrectable read error occurred disk (ST = 51h, ER = 40h).  
(6) A SATA communication error occurred (ST = 51h, ER = 14h).  
(7) An error other than the above errors occurred (ST = 51h, ER = 04h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
0
x
0
1
x
1
x
1
1
0
0
L
HDNo. /LBA  
Start cylinder No. [MSB] / LBA  
Start cylinder No. [LSB] / LBA  
Start sector No.  
Transfer sector count  
xx  
/ LBA [LSB]  
5-34  
C141-E203-01EN  
5.3 Host Commands  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
HDNo. /LBA  
x
L
x
x
Start cylinder No. [MSB] / LBA  
Start cylinder No. [LSB] / LBA  
Start sector No.  
/ LBA [LSB]  
00 (*1)  
Error information  
*1 If the command is terminated because of an error, the number of  
remaining sectors for which data has not been written or verified is  
set in this register.  
C141-E203-01EN  
5-35  
Interface  
(7) READ VERIFY SECTOR(S) (X’40’ or X’41’)  
This command operates similarly to the READ SECTOR(S) command except that  
the data is not transferred to the host system.  
After all requested sectors are verified, the device reports the status to the host  
system.  
Upon the completion of the command execution, the shadow block registers  
contain the cylinder, head, and sector number of the last sector verified.  
If an unrecoverable disk error occurs, the verify operation is terminated at the  
sector where the error occurred. The shadow block registers contain the cylinder,  
the head, and the sector addresses (in the CHS mode) or the logical block address  
(in the LBA mode) of the sector where the error occurred. The Sector Count field  
indicates the number of sectors that have not been verified.  
Error reporting conditions  
(1) A specified address exceeds the range where read operations are allowed  
(ST = 51h, ER = 10h).  
(2) The range where read operations are allowed will be exceeded by an address  
during a read operation (ST = 51h, ER = 10h).  
(3) An uncorrectable disk read error occurred (ST = 51h, ER = 40h).  
(4) The sync byte indicating the beginning of a sector was not found  
(ST = 51h, ER = 01h).  
(5) A SATA communication error occurred (ST = 51h, ER = 01h).  
(6) An error other than the above errors occurred (ST = 51h, ER = 04h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
0
x
1
0
x
0
x
0
0
0
R
L
HDNo. /LBA  
Start cylinder No. [MSB] / LBA  
Start cylinder No. [LSB] / LBA  
Start sector No.  
Transfer sector count  
xx  
/ LBA [LSB]  
5-36  
C141-E203-01EN  
5.3 Host Commands  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
HDNo. /LBA  
x
L
x
x
Start cylinder No. [MSB] / LBA  
Start cylinder No. [LSB] / LBA  
Start sector No.  
/ LBA [LSB]  
00 (*1)  
Error information  
*1 If the command is terminated due to an error, the remaining number  
of sectors of which data was not transferred is set in this register.  
C141-E203-01EN  
5-37  
Interface  
(8) SEEK (X’70’ to X’7F’)  
This command performs a seek operation to the track and selects the head  
specified in the command block registers. After completing the seek operation, the  
device reports the status to the host system.  
In the LBA mode, this command performs the seek operation to the cylinder and  
head position in which the sector is specified.  
Error reporting conditions  
(1) A specified address exceeds the range where the head can be positioned  
(ST = 51h, ER = 10h).  
(2) Head positioning is not possible because an error occurred  
(ST = 51h, ER = 10h).  
(3) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
0
x
1
1
x
1
x
x
x
x
x
L
HD No. / LBA  
Start cylinder No. [MSB] / LBA  
Start cylinder No. [LSB] / LBA  
Start sector No.  
/ LBA [LSB]  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
HD No. / LBA  
x
L
x
x
Start cylinder No. [MSB] / LBA  
Start cylinder No. [LSB] / LBA  
Start sector No.  
/ LBA [LSB]  
xx  
Error information  
5-38  
C141-E203-01EN  
5.3 Host Commands  
(9) EXECUTE DEVICE DIAGNOSTIC (X’90’)  
This command performs an internal diagnostic test (self-diagnosis) of the device.  
The device reports the diagnostic result and status to the host.  
Table 5.6 lists the diagnostic code written in the Error field which is 8-bit code.  
Table 5.6 Diagnostic code  
Code  
Result of diagnostic  
Format Unit is not completed.  
X’00’  
X’01’  
X’02’  
X’03’  
X’04’  
X’05’  
X’06’  
No error detected.  
HDC diagnostic error  
Data buffer diagnostic error  
Memory diagnostic error  
Reading the system area is abnormal  
Calibration abnormal  
Note:  
The device responds to this command with the result of power-  
on diagnostic test.  
Error reporting conditions  
(1) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
0
x
0
x
1
x
0
0
0
0
HD No. /LBA  
xx  
xx  
xx  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH)  
CL  
SN  
SC  
Status information  
HD No. /LBA  
x
x
x
x
xx  
xx  
01H  
01H  
ER  
Diagnostic code  
C141-E203-01EN  
5-39  
Interface  
(10) INITIALIZE DEVICE PARAMETERS (X’91’)  
The host system can set the number of sectors per track and the maximum head  
number (maximum head number is “number of heads minus 1”) per cylinder with  
this command. Upon receipt of this command, the device sets the parameters. Then  
the device reports the status to the host system.  
When the SC field is specified to X’00’, an ABORTED COMMAND error is  
posted. Other than X’00’ is specified, this command terminates normally.  
The parameters set by this command are retained even after soft reset issuance or  
power save operation regardless of the setting of disabling the reverting to default  
setting, however, the COMRESET is not retained.  
The operation is always performed in CHS mode, with the command ignoring any  
setting of LBA mode.  
Error reporting conditions  
(1) "00h" is specified in the SC field (ST = 51h, ER = 04h).  
(2) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
0
x
0
x
1
x
0
0
0
1
Max. head No.  
xx  
xx  
xx  
Number of sectors/track  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
Max. head No.  
x
x
x
x
xx  
xx  
xx  
Number of sectors/track  
Error information  
5-40  
C141-E203-01EN  
5.3 Host Commands  
(11) DOWNLOAD MICROCODE (X’92’)  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
1
0
x
0
1
1
x
0
0
0
0
1
0
0
0
00  
00  
Sector count (15-8)  
Sector count (7-0)  
Subcommand code  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
1
x
1
x
0
0
0
0
00  
00  
xx  
xx  
Error information  
This command rewrites the microcode of the device (firmware).  
When this command is accepted, the device does beginning the data transfer of the  
microcode or the microcode rewriting according to Subcommand code (Rewriting is  
also possible simultaneously with the data transfer). Refer to Table 5.7.  
In the data transfer of Subcommand code:01h, transfer by which data is divided  
into multiple times is possible. Refer to Table 5.8.  
After the designation of rewriting by Subcommand code:07h, reactivates in the  
device for the update of the rewriting microcode of the microcode.  
Table 5.7 Operation of DOWNLOAD MICROCODE  
Host Command  
Subcommand code  
Movement of device  
Sector count  
Data transfer  
Microcode rewriting execution  
(FR Field)  
(SN, SC Field)  
0000h  
xxxxh  
0000h  
xxxxh  
Non  
It is.  
Non  
It is.  
Rewriting execution reservation  
Rewriting execution reservation  
Execution. **  
01h  
07h  
Execution. **  
Excluding 01h and 07h  
Abort  
C141-E203-01EN  
5-41  
Interface  
**: In the following cases, Subcommand code=07h returns Abort as an error  
though becomes Microcode rewriting execution specification.  
1) Abnormality of the transmitted Microcode data is detected.  
2) The data transfer is not done (The number of transfer: 0).  
3) The DOWNLOAD MICROCODE command is not continuously issued when  
the transfer has been divided into multiple transfers.  
Table 5.8 Example of rewriting procedure of data 384K Bytes (30000h Bytes)  
of microcode  
Transfer example 1:  
1) CMD = 92h SN, SC = 0100h FR = 0lh  
2) CMD = 92h SN, SC = 0100h FR = 0lh  
3) CMD = 92h SN, SC = 0100h FR = 0lh  
4) CMD = 92h SN, SC = 0000h FR = 07h  
Transfer example 2:  
Transfer of 127 KB from the first  
Transfer from 128 to 255 KB  
Transfer from 256 to 383 KB  
Firmware rewriting execution  
1) CMD = 92h SN, SC = 0300h FR = 0lh  
Transfer of 384 KB  
2) CMD = 92h SN, SC = 0000h FR = 07h Firmware rewriting execution  
Transfer example 3:  
1) CMD = 92h SN, SC = 0300h FR = 07h Transfer of 384 KB and Firmware rewriting  
execution  
Transfer example 4:  
1) CMD = 92h SN, SC = 0100h FR = 0lh  
2) CMD = 92h SN, SC = 0100h FR = 0lh  
Transfer of 127 KB from the first  
Transfer from 128 to 255 KB  
3) CMD = 92h SN, SC = 0100h FR = 07h Transfer from 256 to 383 KB and Firmware  
rewriting execution  
The Aborted Command error is reported if any of the following conditions is  
satisfied: transferred microcode data is incorrect, firmware rewriting is specified  
before microcode data is transferred, or the DOWNLOAD MICROCODE  
command is not issued continuously when the transfer has been divided into  
multiple transfers.  
Error reporting conditions  
(1) When the transferred Micro code data error occurs  
(ST = 51h, ER = 04h).  
(2) When writing is specified though the data has not transferred yet.  
(ST = 51h, ER = 04h).  
(3) When the SATA frame error occurs. (ST = 51h, ER = 14h).  
(4) When detect the error other than the above mentioned.  
(ST = 51h, ER = 04h).  
5-42  
C141-E203-01EN  
5.3 Host Commands  
(12) STANDBY IMMEDIATE (X’94’ or X’E0’)  
Upon receipt of this command, the device enters the standby mode. The device  
then reports the status to the host system. This command does not support the APS  
timer function.  
Error reporting conditions  
(1) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
X’94’ or X’E0’  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
C141-E203-01EN  
5-43  
Interface  
(13) IDLE IMMEDIATE (X’95’ or X’E1’)  
Upon receipt of this command, the device enters the idle mode. Then, the device  
reports the status to the host system. This command does not support the APS  
timer function.  
Error reporting conditions  
(1) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
X’95’ or X’E1’  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
5-44  
C141-E203-01EN  
5.3 Host Commands  
(14) STANDBY (X’96’ or X’E2’)  
Upon receipt of this command, the device enters the standby mode. If the device  
has already spun down, the spin-down sequence is not implemented.  
If the Sector Count field has a value other than "0," the APS timer is set when the  
command is received. In this event, the device enters the command waiting state,  
and the timer starts to count down. If a command is not received within the period  
specified as the APS timer value, the device automatically enters Standby mode. If  
the Sector Count field value is "0" the APS timer is disabled when the command is  
received.  
Under the standby mode, the spindle motor is stopped. Thus, when the command  
involving a seek such as READ SECTOR(s) command is received, the device  
processes the command after driving the spindle motor.  
Error reporting conditions  
(1) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
X’96’ or X’E2’  
x
x
x
x
xx  
xx  
xx  
xx  
Period of timer  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
C141-E203-01EN  
5-45  
Interface  
(15) IDLE (X’97’ or X’E3’)  
Upon receipt of this command, the device enters the idle mode. The device report  
the status even if the device has not fully entered the idle mode. If the spindle of  
the device is already rotating, the spin-up sequence shall not be implemented.  
By using this command, the APS (Automatic Power Standby) timer function is  
enabled and the timer immediately starts the countdown. When the timer reaches  
the specified value, the device enters standby mode. The APS timer is set to  
prohibition if the Sector Count field's value was "0" when device has received this  
command.  
The period of timer count is set depending on the value of the Sector Count  
register as shown below.  
Sector Count field value  
[X’00’]  
Point of timer  
Timeout disabled  
0
1 to 240  
241 to 251 [X’F1’ to X’FB’]  
[X’01’ to X’F0’]  
(Value × 5) seconds  
((Value-240) × 30) min  
21 minutes  
252  
253  
[X’FC’]  
[X’FD’]  
8 hrs  
254 to 255 [X’FE’ to X’FF’]  
21 minutes 15 seconds  
Error reporting conditions  
(1) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
X’97’ or X’E3’  
x
x
x
x
xx  
xx  
xx  
xx  
Period of timer  
xx  
5-46  
C141-E203-01EN  
5.3 Host Commands  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
C141-E203-01EN  
5-47  
Interface  
(16) CHECK POWER MODE (X’98’ or X’E5’)  
The host checks the power mode of the device with this command.  
The host system can confirm the power save mode of the device by the contents of  
the Sector Count field after executing this command.  
The device sets the following field value. After that, the device reports the status  
to the host system.  
Power save mode  
Sector Count field  
X’00’  
• During moving to Standby mode  
• Standby mode  
• Idle mode  
X’FF’  
X’FF’  
• Active mode  
Error reporting conditions  
(1) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
X’98’ or X’E5’  
x
x
x
x
xx  
CH  
CL  
SN  
SC  
FR  
xx  
xx  
xx  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
Status information  
x
DH  
x
x
x
xx  
CH  
CL  
SN  
SC  
ER  
xx  
xx  
xx  
X’00’ or X’FF’  
Error information  
5-48  
C141-E203-01EN  
5.3 Host Commands  
(17) SLEEP (X’99’ or X’E6’)  
This command is the only way to make the device enter the sleep mode.  
Upon receipt of this command, the device enters the sleep mode, then reports the  
status to the host system. The device report the status even if the device has not  
fully entered the sleep mode.  
In the sleep mode, the spindle motor is stopped.  
The only way to release the device from sleep mode is to execute a software or  
COMRESET.  
Error reporting conditions  
(1) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
X’99’ or X’E6’  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
C141-E203-01EN  
5-49  
Interface  
(18) SMART (X’B0’)  
This command predicts the occurrence of device failures depending on the  
subcommand specified in the Features field. If the Features field contains values  
that are not supported with the command, the Aborted Command error is issued.  
Before issuing the command, the host must set the key values in the Cylinder Low  
and Cylinder High field (4Fh in the Cylinder Low field and C2h in the Cylinder  
High field). If the key values are incorrect, the Aborted Command error is issued.  
If the failure prediction function is disabled, the device returns the Aborted  
Command error to subcommands other than those of the SMART Enable  
Operations (with the Features field set to D8h).  
If the failure prediction function is enabled, the device collects and updates data on  
specific items. The values of items whose data is collected and updated by the  
device in order to predict device failures are hereinafter referred to as attribute  
values.  
5-50  
C141-E203-01EN  
5.3 Host Commands  
Table 5.9 Features Field values (subcommands) and functions (1/3)  
Features Field  
X’D0’  
Function  
SMART READ DATE:  
A device that received this subcommand saves all the updated attribute  
values. The device then transfers 512-byte attribute value information to the  
host after transferring PIOSU.  
* For information about the format of the attribute value information, see  
Table 5.10.  
X’D1’  
X’D2’  
SMART READ ATTRIBUTE THRESHOLDS:  
This subcommand is used to transfer 512-byte guarantee failure threshold  
value data to the host.  
* For information about the format of the guarantee failure threshold value  
data, see Table 5.11.  
SMART ENABLE/DISABLE ATTRIBUTE AUTOSAVE:  
Enables (by setting the Sector Count field to a value other than 00h) or disables  
(by setting the Sector Count field to 00h) a function that automatically saves  
device attribute values (“automatic attribute save function”). This setting is  
held regardless of whether the device is turned on or off. If the automatic  
attribute save function is enabled and more than 15 minutes has elapsed  
since the last time that attributes were saved, then the attributes are saved.  
However, if the automatic attribute save function is disabled, the attributes  
are not saved. Upon receiving this subcommand, a device enables or  
disables the automatic attribute save function, and transfers the RegDH, then  
reports the status.  
X’D3’  
X’D4’  
SMART SAVE ATTRIBUTE VALUES:  
When the device receives this subcommand, if saves device attribute value  
data, and transfers the RegDH, then reports the status.  
SMART EXECUTIVE OFF-LINE IMMEDIATE:  
A device which receives this command starts collecting the off-line data  
specified in the Sector Number field, or stops.  
In the off-line mode, after transferring the RegDH, off-line data are  
collected. In the captive mode, it collects off-line data then transfers the  
RegDH when collection of data is completed.  
SN Off-line data collection mode  
00h: Off-line diagnosis (off-line mode)  
01h: Simple self-test (off-line mode)  
02h: Comprehensive self-test (off-line mode)  
03h: Conveyance self-test (off-line mode)  
04h: Selective self-test (off-line mode)  
7Fh: Self-test stop  
81h: Simple self-test (captive mode)  
82h: Comprehensive self-test (captive mode)  
83h: Conveyance self-test (captive mode)  
84h: Selective self-test (captive mode)  
C141-E203-01EN  
5-51  
Interface  
Table 5.9 Features Field values (subcommands) and functions (2/3)  
Features Field  
X’D5’  
Function  
SMART READ LOG:  
A device which receives this sub-command reads the log sector specified in  
the Sector Number Field. Next, it transfers the PIOSU and transmits the log  
sector to the host computer.  
SN:  
SC:  
Log sector  
00h:  
01h:  
02h:  
06h:  
09h:  
01h:  
01h:  
33h:  
01h:  
01h:  
SMART log directory  
SMART summary error log  
SMART comprehensive error log  
SMART self-test log  
SMART selective self-test log  
80h-9Fh: 01h-10h: Host vendor log  
* See Table 5.18 concerning the SMART error log data format.  
See Table 5.20 concerning the SMART self-test log data format.  
See Table 5.21 concerning the SMART selective self-test log data  
format.  
X’D6’  
SMART WRITE LOG:  
A device which receives this sub-command, when it has prepared to receive  
data from the host computer, it transfers the PIOSU. Next, it receives data  
from the host computer and writes the specified log sector in the Sector  
Number Field.  
SN:  
SC:  
Log sector  
09h:  
01h:  
SMART selective self-test log  
80h-9Fh: 01h-10h Host vendor log  
* The host can write any desired data in the host vendor log.  
SMART ENABLE OPERATIONS:  
X’D8’  
X’D9’  
This subcommand enables SMART. The setting is maintained even when  
the device is turned off and then on.  
When the device receives this subcommand, it enables SMART, then  
transfers the RegDH.  
SMART DISABLE OPERATIONS:  
This subcommand disables SMART. The setting is maintained even when  
the device is turned off and then on.  
When the device receives this subcommand, it disables SMART, then  
transfers the RegDH..  
5-52  
C141-E203-01EN  
5.3 Host Commands  
Table 5.9 Features Field values (subcommands) and functions (3/3)  
Features Field  
X’DA’  
Function  
SMART RETURN STATUS:  
When the device receives this subcommand, it saves the current device attribute  
values. Then the device compares the device attribute values with guarantee  
failure threshold values. If there is an attribute value exceeding the threshold,  
F4h and 2Ch are loaded into the Cylinder Low and Cylinder High field. If there  
are no attribute values exceeding the thresholds, 4Fh and C2h are loaded into the  
Cylinder Low and Cylinder High field. After the settings for the Cylinder Low  
and Cylinder High field have been determined, the device transfers the RegDH.  
X’DB’  
SMART ENABLE/DISABLE AUTO OFF-LINE:  
This sets automatic off-line data collection in the enabled (when the Sector  
Count field specification 00h) or disabled (when the Sector Count field  
specification = 00) state. This setting is preserved whether the drive’s  
power is switched on or off.  
If 24 hours have passed since the power was switched on, or since the last  
time that off-line data were collected, off-line data collection is performed  
without relation to any command from the host computer.  
The host must regularly issue the SMART READ DATA subcommand (Features  
field = D0h), SMART SAVE ATTRIBUTE VALUES subcommand (Features field  
= D3h), or SMART RETURN STATUS subcommand (Features field = DAh) to  
save the device attribute value data on a medium.  
Alternative, the device must issue the SMART ENABLE-DISABLE ATTRIBUTE  
AUTOSAVE subcommand (Features field = D2h) to use a feature which regularly  
save the device attribute value data to a medium.  
The host can predict failures in the device by periodically issuing the SMART  
RETURN STATUS subcommand (Features field = DAh) to reference the Cylinder  
Low and Cylinder High field.  
If an attribute value is below the guarantee failure threshold value, the device is  
about to fail or the device is nearing the end of its life. In this case, the host  
recommends that the user quickly backs up the data.  
C141-E203-01EN  
5-53  
Interface  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
0
x
1
x
1
x
0
0
0
0
xx  
Key (C2h)  
Key (4Fh)  
xx  
xx  
Subcommand  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
Key-failure prediction status (C2h/2Ch)  
Key-failure prediction status (4Fh/F4h)  
xx  
xx  
Error information  
The attribute value information is 512-byte data; the format of this data is shown  
the following Table 5.10. The host can access this data using the SMART READ  
DATE subcommand (Features field = D0h). The guarantee failure threshold value  
data is 512-byte data; the format of this data is shown the following Table 5.11.  
The host can access this data using the SMART READ ATTRIBUTE  
THRESHOLDS subcommand (Features field = D1h).  
5-54  
C141-E203-01EN  
5.3 Host Commands  
Table 5.10 Format of device attribute value data  
Byte  
Item  
00  
01  
Data format version number  
02  
Attribute 1  
Attribute ID  
Status flag  
03  
04  
05  
06  
Current attribute value  
Attribute value for worst case so far  
Raw attribute value  
07 to 0C  
0D  
Reserved  
0E to 169 Attribute 2 to  
attribute 30  
(The format of each attribute value is the same as  
that of bytes 02 to 0D.)  
16A  
16B  
Off-line data collection status  
Self-test execution status  
16C, 16D Off-line data collection execution time [sec.]  
16E  
16F  
Reserved  
Off-line data collection capability  
Trouble prediction capability flag  
Error logging capability  
170, 171  
172  
173  
(Self-test error detection point)  
174  
Simple self-test (Quick Test) execution time [min.]  
Comprehensive self-test (Comprehensive Test) execution time [min.]  
Conveyance self-test execution time [min.]  
175  
176  
177 to 181 Reserved  
182 to 1FE Vendor unique  
1FF  
Table 5.11 Format of guarantee failure threshold value data  
Byte Item  
Check sum  
00  
01  
Data format version number  
02  
03  
Threshold 1 Attribute ID  
Guarantee failure threshold  
Reserved  
04 to 0D  
0E to 169 Threshold 2 to (The format of each threshold value is the same as  
Threshold 30 that of bytes 02 to 0D.)  
16A to 17B Reserved  
17C to 1FE Vendor unique  
1FF  
Check sum  
C141-E203-01EN  
5-55  
Interface  
Data format version number  
The data format version number indicates the version number of the data format of  
the device attribute values or guarantee failure thresholds. The data format version  
numbers of the device attribute values and guarantee failure thresholds are the  
same. When a data format is changed, the data format version numbers are  
updated.  
Attribute ID  
The attribute ID is defined as follows:  
Attribute ID  
Attribute name  
(Indicates unused attribute data.)  
Read Error Rate  
0
1
2
Throughput Performance  
Spin Up Time  
3
4
Start/Stop Count  
5
Reallocated Sector Count  
Seek Error Rate  
7
8
Seek Time Performance  
Power-On Hours Count  
Spin Retry Count  
9
10  
12  
Drive Power Cycle Count  
Emergency Retract Cycle Count  
Load/Unload Cycle Count  
HDA Temperature  
192  
193  
194  
195  
196  
197  
198  
(199)  
200  
203  
240  
ECC On the Fly Count  
Reallocated Event Count  
Current Pending Sector Count  
Off-Line Scan Uncorrectable Sector Count  
(Ultra ATA CRC Error Count)  
Write Error Rate  
Run Out  
Communication Error Rate  
5-56  
C141-E203-01EN  
5.3 Host Commands  
Status Flag  
Bit  
0
Meaning  
If this bit is 1, it indicates normal operations are assured with the  
attribute when the attribute value exceeds the threshold value.  
1
If this bit is 1 (0), it indicates the attribute only updated by an on-  
line test (off-line test).  
2
3
4
If this bit 1, it indicates the attribute that represents performance.  
If this bit 1, it indicates the attribute that represents an error rate.  
If this bit 1, it indicates the attribute that represents the number of  
occurrences.  
5
If this bit 1, it indicates the attribute that can be collected/saved  
even if SMART is disabled.  
6 to 15  
Reserve bit  
Current attribute value  
It indicates the normalized value of the original attribute value. The value deviates  
in a range of 01h to 64h (range of 01h to C8h for the Ultra ATA CRC error rate  
and communication error rate). It indicates that the closer the value is to 01h, the  
higher the possibility of a failure. The host compares the attribute value with the  
threshold value. If the attribute value is larger than the threshold value, the drive is  
determined to be normal.  
Attribute value for the worst case so far  
This is the worst attribute value among the attribute values collected to date. This  
value indicates the state nearest to a failure so far.  
Raw attribute value  
Raw attributes data is retained.  
Off-line data collection status  
C141-E203-01EN  
5-57  
Interface  
Table 5.12 Off-line data collection status  
Status Byte  
Meaning  
00h or 80h Off-line data collection is not executed.  
02h or 82h Off-line data collection has ended without an error.  
04h or 84h Off-line data collection is interrupted by a command from the host.  
05h or 85h Off-line data collection has ended before completion because of a  
command from the host.  
06h or 86h Off-line data collection has ended before completion because of an  
error that makes collection impossible. (Not used)  
40 to 7Fh  
Vendor unique (Not used)  
C0h to FFh  
01h or 81h  
03h or 83h  
07h or 3Fh  
87h to BFh  
Reserved  
Self-test execution status  
Table 5.13 Self-test execution status  
Bit  
0 to 3:  
Meaning  
Remainder of the self-test is indicated as a percentage in a range  
of "0h to 9h" (corresponding to 0 to 90 %).  
4 to 7:  
= 0h:  
Self-test execution status  
Self-test has ended successfully, or self-test has not been  
executed.  
= 1h:  
= 2h:  
= 3h:  
= 4h:  
Self-test is suspended by the host.  
Self-test is interrupted by a soft/COMRESET from the host.  
Self-test cannot be executed.  
Self-test has ended with an abnormality because of unknown  
contents.  
= 5h:  
= 6h:  
= 7h:  
Self-test has ended with "Write/Read Test" error.  
Self-test has ended with "Servo Check," error.  
Self-test has ended with "SMART Drive Error Log Check,"  
"Random Read Test," or "Read Scan Test" error.  
= 8h:  
Self-test has ended with "Pre-SMART Check," or "Post-SMART  
Check" error.  
= 9h to Eh: Reserved  
= Fh: Self-test is in progress.  
5-58  
C141-E203-01EN  
5.3 Host Commands  
Off-line data collection capability  
Indicates the method of off-line data collection carried out by the drive. If the off-  
line data collection capability is 0, it indicates that off-line data collection is not  
supported.  
Table 5.14 Off-line data collection capability  
Bit  
0
Meaning  
If this bit is 1, it indicates that the SMART EXECUTE OFF-  
LINE IMMEDATE sub-command (Features field = D4h) is  
supported.  
1
2
Vendor unique  
If this bit is 1, it indicates that offline data collection under  
execution is aborted when a new command is received.  
3
4
5
6
7
If this bit is 1, it indicates that the SMART Off-line Read  
Scanning Technology is supported.  
If this bit is 1, it indicates that the SMART Self-test function  
is supported.  
If this bit is 1, it indicates that the SMART Conveyance Self-  
test is supported.  
If this bit is 1, it indicates that the SMART Selective Self-  
test is supported.  
Reserved bits  
Failure prediction capability flag  
Table 5.15 Failure prediction capability flag  
Bit  
0
Meaning  
If this bit is 1, it indicates that the attribute value is saved on  
media before the drive enters the power save mode.  
1
If this bit is 1, it indicates that the attribute value is saved  
automatically after the pre-set operation of the drive.  
2 to 15  
Reserved bits  
Error logging capability  
Table 5.16 Drive error logging capability  
Bit  
0
Meaning  
If this bit is 1, it indicates that the drive error logging  
function is supported.  
1 to 7  
Reserved bits  
C141-E203-01EN  
5-59  
Interface  
Checksum  
Two’s complement of the lower byte, obtained by adding 511-byte data one byte at  
a time from the beginning.  
Guarantee failure threshold  
The limit of a varying attribute value. The host compares the attribute values with  
the thresholds to identify a failure.  
Table 5.17 Log Directory Data Format  
Byte  
Item  
00  
01  
SMART Logging Version  
02  
03  
Number of sectors of Address "01h"  
Reserved  
04  
Number of sectors of Address "02h"  
05 to 0B  
Reserved  
0C  
0D to 11  
12  
Number of sectors of Address "06h"  
Reserved  
Number of sectors of Address "09h"  
Reserved  
13 to FF  
100  
Number of sector  
Address 80h  
101  
Reserved  
Address 81h  
to  
Address 9Fh  
"102" and "13F" are both the same  
format as "100-101"  
102 to 13F  
140 to 1FF  
Reserved  
SMART error logging  
If the device detects an unrecoverable error during execution of a command  
received from the host, the device registers the error information in the SMART  
Summary Error Log (see Table 5.18) and the SMART Comprehensive Error Log  
(see Table 5.19), and saves the information on media.  
The host issues the SMART Read Log Sector sub-command (Features field = D5h,  
Sector Number field = 01h, Sector Count field = 01h) and can read the SMART  
Summary Error Log.  
The host issues the SMART Read Log Sector sub-command (Features field = D5h,  
Sector Number field = 02h, Sector Count field = 33h) and can read the SMART  
Comprehensive Error Log.  
5-60  
C141-E203-01EN  
5.3 Host Commands  
Table 5.18 Data format of SMART Summary Error Log (1/2)  
Item  
Byte  
00  
01  
Version of this function  
Pointer for the latest “Error Log Data Structure”  
Forth last command data structure  
Third last command data structure  
Second last command data structure  
Last command data structure  
02 to 0D  
0E to 19  
1A to 25  
26 to 31  
32  
Device Control field value  
33  
Features field value  
34  
Sector Count field value  
Sector Number field value  
Cylinder Low field value  
Cylinder High field value  
Drive/Head field value  
Command field value  
35  
Command data  
structure  
36  
37  
38  
39  
Error log data  
structure  
Elapsed time after the power-on  
sequence (unit: ms)  
3A to 3D  
3E  
3F  
Reserved  
Error field value  
40  
Sector Count field value  
Sector Number field value  
Cylinder Low field value  
Cylinder High field value  
Drive/Head field value  
Status field value  
41  
42  
Error data structure  
43  
44  
45  
46 to 58  
59  
Vendor unique  
State  
5A, 5B  
Power-on time (unit: h)  
C141-E203-01EN  
5-61  
Interface  
Table 5.18 Data format of SMART Summary Error Log (2/2)  
Byte  
Item  
Error log data structure 2  
to  
5C to 1C3  
Error log data structure 5  
1C4, 1C5 Total number of drive errors  
1C6 to 1FE Reserved  
1FF  
Check sum  
Command data structure  
Indicates the command received when an error occurs.  
Error data structure  
Indicates the status register when an error occurs.  
Total number of drive errors  
Indicates total number of errors registered in the error log.  
Checksum  
Two's complement of the lower byte, obtained by adding 511-byte data one byte at a  
time from the beginning.  
Status  
Bits 0 to 3: Indicates the drive status when received error commands according to  
the following table.  
Bits 4 to 7: Vendor unique  
Status  
Meaning  
0
Unclear status  
Sleep status  
1
2
3
Standby status  
Active status (BSY bit = 0)  
Off-line data collection being executed  
Reserved  
4
5 to F  
5-62  
C141-E203-01EN  
5.3 Host Commands  
Table 5.19 Data format of SMART Comprehensive Error Log  
Byte  
First sector  
Next sector  
00  
01  
SMART Error Logging 01h  
Reserved  
Reserved  
Index Pointer Latest Error Data Structure  
1st Error Log Data Structure  
2nd Error Log Data Structure2  
3rd Error Log Data Structure3  
4th Error Log Data Structure4  
02…5B  
Error Log Data Structure 5n+1  
Error Log Data Structure 5n+2  
Error Log Data Structure 5n+3  
Error Log Data Structure 5n+4  
Error Log Data Structure 5n+5  
5C…B5  
B6…10F  
110…169  
16A…1C3  
5thError Log Data Structure5  
Total number of drive errors  
Reserved  
1C4…1C5  
1C6…1FE  
1FF  
Reserved  
Reserved  
Check sum  
Check sum  
“n” indicates sector number in the Error Log. The first sector is 0.  
SMART Self-Test  
The host computer can issue the SMART Execute Off-line Immediate sub-command  
(Features field = D4h) and cause the device to execute a self-test. When the self-test  
is completed, the device saves the SMART self-test log to the disk medium.  
The host computer can issue the SMART Read Log Sector sub-command (Features  
field = D5h, Sector Number field = 06h, Sector Count field = 01h) and can read the  
SMART self-test log.  
C141-E203-01EN  
5-63  
Interface  
Table 5.20 SMART self-test log data format  
Byte  
00, 01  
02  
Item  
Self-test log data structure  
Self-test log 1  
Self-test number (Sector Number field Value)  
03  
Self-test execution status  
Life time. Total power-on time [hours]  
Self-test error No.  
04, 05  
06  
07 to 0A  
0B to 19  
Error LBA  
Vendor unique  
(Each log data format is the same as that in  
byte 02 to 19.)  
1A to 1F9 Self-test log 2 to 21  
1FA, 1FB Vendor unique  
1FC  
1FD, 1FE Reserved  
1FF Check sum  
Self-test index  
Self-test number  
Indicates the type of self-test executed.  
Self-test execution status  
Same as byte 16Bh of the attribute value.  
Self-test index  
If this is "00h", it indicates the status where the self-test has never been executed.  
Checksum  
Two's complement of the lower byte, obtained by adding 511-byte data one byte at a  
time from the beginning.  
5-64  
C141-E203-01EN  
5.3 Host Commands  
Table 5.21 Selective self-test log data structure  
Byte  
Item  
00h, 01h  
02h...09h  
0Ah...11h  
12h...19h  
1Ah...21h  
22h...29h  
2Ah...31h  
32h...39h  
3Ah...41h  
42h...49h  
4Ah...51h  
52h...151h  
152h...1EBh  
1Ech...1F3h  
1F4h...1F5h  
1F6h...1F7h  
1F8h  
Data Structure Revision Number  
Starting LBA  
Test Span 1  
Ending LBA  
Starting LBA  
Test Span 2  
Ending LBA  
Starting LBA  
Test Span 3  
Ending LBA  
Starting LBA  
Test Span 4  
Ending LBA  
Starting LBA  
Test Span 5  
Ending LBA  
Reserved  
Vender Unique  
Current LBA under test  
Current Span under test  
Feature Flags  
Offline Execution Flag  
Selective Offline Scan Number  
Reserved  
Vender Unique  
1F9h  
1FAh, 1FBh  
1FCh, 1FDh  
1FEh, 1FFh  
Selective Self-test pending time [min]  
Checksum  
Test Span  
Selective self-test log provides for the definition of up to five test spans. If the  
starting and ending LBA values for a test span are both zero, a test span is not  
defined and not tested.  
Current LBA under test  
As the self-test progress, the device shall modify this value to contain the LBA  
currently being tested.  
C141-E203-01EN  
5-65  
Interface  
Current Span under test  
As the self-test progress, the device shall modify this value to contain the test span  
number currently being tested.  
Feature Flags  
Table 5.22 Selective self-test feature flags  
Bit  
Description  
0
Vendor specific (unused)  
1
When set to one, perform off-line scan after selective test  
Vendor specific (unused)  
2
3
When set to one, off-line scan after selective test is pending.  
When set to one, off-line scan after selective test is active.  
Reserved  
4
5...15  
Bit [l] shall be written by the host and returned unmodified by the device. Bit [3:4]  
shall be written as zeros by the host and the device shall modify them as the test  
progress.  
Selective Self-test pending time [min]  
The selective self-test pending time is the time in minutes from power-on to the  
resumption of the off-line testing if the pending bit is set.  
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C141-E203-01EN  
5.3 Host Commands  
(19) DEVICE CONFIGURATION (X'B1')  
Individual Device Configuration Overlay feature sub commands are identified by  
the value placed in the Features field. The following table shows these Features  
field values. If this command sets with the reserved value of Features field, an  
aborted command error is posted.  
FR field  
Command  
C0h  
C1h  
C2h  
C3h  
DEVICE CONFIGURATION RESTORE  
DEVICE CONFIGURATION FREEZE  
DEVICE CONFIGURATION IDENTIFY  
DEVICE CONFIGURATION SET  
00h-BFh, C4h-FFh Reserved  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
0
x
1
x
1
x
0
0
0
1
xx  
xx  
xx  
xx  
xx  
C0h/C1h/C2h/C3h  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
C141-E203-01EN  
5-67  
Interface  
DEVICE CONFIGURATION RESTORE (Features Field = C0h)  
The DEVICE CONFIGURATION RESTORE command disables any setting  
previously made by a DEVICE CONFIGURATION SET command and returns the  
content of the IDENTIFY DEVICE command response to the original settings as  
indicated by the data returned from the execution of a DEVICE  
CONFIGURATION IDENTIFY command. After execution of this command, the  
settings are kept regardless of the power-on or COMRESET execution.  
Error reporting conditions  
(1) The device is in the Device Configuration Freeze Lock state  
(ST = 51h, ER = 04h).  
(2) The command was received before the DEVICE CONFIGURATION SET  
command was issued (ST = 51h, ER = 04h).  
(3) The SET MAX ADDRESS (EXT) command (F9h, 37h) has been specified  
with a value in the Host Protected Area (ST = 51h, ER = 04h).  
(4) A SATA communication error occurred (ST = 51h, ER = 14h).  
DEVICE CONFIGURATION FREEZE LOCK (Features Field = C1h)  
The DEVICE CONFIGURATION FREEZE LOCK command prevents accidental  
modification of the Device Configuration Overlay settings. After successful  
execution of a DEVICE CONFIGURATION FREEZE LOCK command, all  
DEVICE CONFIGURATION SET, DEVICE CONFIGURATION FREEZE  
LOCK, DEVICE CONFIGURATION IDENTIFY, and DEVICE  
CONFIGURATION RESTORE commands are aborted by the device. The  
DEVICE CONFIGURATION FREEZE LOCK condition is cleared by a power-  
down, not cleared by a COMRESET or software reset.  
Error reporting conditions  
(1) The device is in the Device Configuration Freeze Lock state  
(ST = 51h, ER = 04h).  
(2) The command was received before the DEVICE CONFIGURATION SET  
command was issued (ST = 51h, ER = 04h).  
(3) A SATA communication error occurred (ST = 51h, ER = 14h).  
5-68  
C141-E203-01EN  
5.3 Host Commands  
DEVICE CONFIGURATION IDENTIFY (Features Field = C2h)  
The DEVICE CONFIGURATION IDENTIFY command returns information  
shown in Table 5.23. The content of this data structure indicates the selectable  
commands, modes, and feature sets that the device is capable of supporting. If a  
DEVICE CONFIGURATION SET command has been issued reducing the  
capabilities, the response to an IDENTIFY DEVICE command will reflect the  
reduced set of capabilities, however, the DEVICE CONFIGURATION IDENTIFY  
command will not be changed.  
Error reporting conditions  
(1) The device is in the Device Configuration Freeze Lock state  
(ST = 51h, ER = 04h).  
(2) A SATA communication error occurred (ST = 51h, ER = 14h).  
DEVICE CONFIGURATION SET (Features Field = C3h)  
The DEVICE CONFIGURATION SET command allows to reduce the set of  
optional commands, modes, or feature sets supported by a device as indicated by a  
DEVICE CONFIGURATION IDENTIFY command. The format of the overlay  
transmitted by the device is described in Table 5.23. As a result to the limitation  
of the function by the DEVICE CONFIGURATION SET command, is reflected in  
IDENTIFY information. When the bits in these words are cleared, the device no  
longer supports the indicated command, mode, or feature set. If a bit is set in the  
overlay transmitted by the device that is not set in the overlay received from a  
DEVICE CONFIGURATION IDENTIFY command, no action is taken for that bit.  
After execution of this command, the settings are kept regardless of the power-on,  
COMRESET, or soft reset  
If the restriction of Multiword DMA modes or Ultra DMA modes is executed, a  
SET FEATURES command should be issued for the modes restriction prior the  
DEVICE CONFIGURATION SET command is issued. When the Automatic  
Acoustic Management function is assumed to be a unsupport, Automatic Acoustic  
Management is prohibited beforehand by SET FEATURES command (FR=C2h).  
Error reporting conditions  
(1) The device is in the Device Configuration Freeze Lock state  
(ST = 51h, ER = 04h).  
(2) The SET MAX ADDRESS (EXT) command (F9h, 37h) has been specified  
with a value in the Host Protected Area (ST = 51h, ER = 04h).  
(3) A SATA communication error occurred (ST = 51h, ER = 14h).  
C141-E203-01EN  
5-69  
Interface  
Table 5.23 DEVICE CONFIGURATION IDENTIFY data structure  
Word  
Value  
Content  
0
1
X'0001'  
X'0007'  
Data structure revision  
Multiword DMA modes supported  
Reflected in IDENTIFY information "WORD63".  
Bit 15-3:  
Bit 2:  
Bit 1:  
Reserved  
1 = Multiword DMA mode 2 and below are supported  
1 = Multiword DMA mode 1 and below are supported  
1 = Multiword DMA mode 0 is supported  
Bit 0:  
2
X'003F'  
Ultra DMA modes supported  
Reflected in IDENTIFY information "WORD88".  
Bit 15-6:  
Bit 5:  
Bit 4:  
Bit 3:  
Bit 2:  
Bit 1:  
Bit 0:  
Reserved  
1 = Ultra DMA mode 5 and below are supported  
1 = Ultra DMA mode 4 and below are supported  
1 = Ultra DMA mode 3 and below are supported  
1 = Ultra DMA mode 2 and below are supported  
1 = Ultra DMA mode 1 and below are supported  
1 = Ultra DMA mode 0 is supported  
3 to 6  
7
-
Maximum LBA address Reflected in IDENTIFY information  
"WORD60-61". (WORD100-103) *  
Command set/feature set supported  
X'00CF'  
(X'01CF') * Reflected in IDENTIFY information "WORD82-87".  
Bit 15-9:  
Bit 8:  
Bit 7:  
Bit 6:  
Bit 5:  
Bit 4:  
Bit 3:  
Bit 2:  
Bit 1:  
Bit 0:  
Reserved  
1 = 48-bit Addressing feature set supported  
1 = Host Protected Area feature set supported  
1 = Automatic acoustic management supported  
1 = READ/WRITE DMA QUEUED commands supported  
1 = Power-up in Standby feature set supported  
1 = Security feature set supported  
1 = SMART error log supported  
1 = SMART self-test supported  
1 = SMART feature set supported  
8
9
X ' 0005 '  
Serial-ATA command set/function  
Reflected in IDENTIFY information ”Word 76 to 79.  
Bit15-4:  
Bit3:  
Bit2:  
Bit1:  
Bit0:  
Reserved  
1 = Asynchronous Notification supported  
1 = Interface power management supported  
1 = Non-zero buffer offsets in DMA Setup FIS supported  
1 = Native command queuing supported  
X ' 0000 '  
Reserved for Serial-ATA  
Reserved  
10 to 254  
255  
X'0000'  
X'xxA5'  
Bit 15-8:  
Bit 7 - 0:  
Check sum code (This is obtained by calculating the sum of all  
upper bytes and lower bytes in WORD 0 to 256 and the byte  
consisting of bits 7 to 0 in WORD 255, and then calculating the  
two's complement of the lowest byte of that sum.)  
5-70  
C141-E203-01EN  
5.3 Host Commands  
(20) READ MULTIPLE (X’C4’)  
The READ MULTIPLE command performs the same tasks as the READ  
SECTOR(S) command except that this command sends the PIO Setup FIS before  
sending data blocks of multiple sectors. The PIO Setup FIS is sent only before the  
first data block is transferred, and it is not sent before any subsequent transfer of  
sector blocks.  
The number of sectors per block is defined by a successful SET MULTIPLE  
MODE Command. The SET MULTIPLE MODE command should be executed  
prior to the READ MULTIPLE command.  
If the number of requested sectors is not divided evenly (having the same number  
of sectors [block count]), as many full blocks as possible are transferred, then a  
final partial block is transferred. The number of sectors in the partial block to be  
transferred is n where n = remainder of (“number of sectors”/”block count”).  
If the READ MULTIPLE command is issued when the READ MULTIPLE  
command is disabled, the device rejects the READ MULTIPLE command with an  
ABORTED COMMAND error.  
If an uncorrectable disk read error occurs, the read operation stops at the sector  
where the error occurred (even if the read operation has not reached the end of the  
block). At this time, the number of sectors that have not been transferred  
(including the error sector), and either the cylinder, head, and sector addresses of  
the error sector (CHS mode) or the logical block address of the error sector (LBA  
mode) are set in the Shadow Block Register.  
Figure 5.2 shows an example of the execution of the READ MULTIPLE  
command.  
Block count specified by SET MULTIPLE MODE command = 4 (number of  
sectors in a block)  
READ MULTIPLE command specifies;  
Number of requested sectors = 9 (Sector Count register = 9)  
C141-E203-01EN  
5-71  
Interface  
Reg. HD  
Host  
Device  
PIO Setup  
Data  
Block  
Block  
(4 sectors)  
PIO Setup  
Data  
(4 sectors)  
PIO Setup  
Data (1sector)  
Partial  
Block  
Figure 5.9 Execution example of READ MULTIPLE command  
Error reporting conditions  
(1) A specified address exceeds the range where read operations are allowed  
(ST = 51h, ER = 10h).  
(2) The range where read operations are allowed will be exceeded by an address  
during a read operation (ST = 51h, ER = 10h).  
(3) An uncorrectable disk read error occurred (ST = 51h, ER = 40h).  
(4) The sync byte indicating the beginning of a sector was not found  
(ST = 51h, ER = 01h).  
(5) The READ MULTIPLE command is disabled (ST = 51h, ER = 04h).  
(6) A SATA communication error occurred (ST = 51h, ER = 0Ch).  
(7) An error other than the above errors occurred (ST = 51h, ER = 04h).  
5-72  
C141-E203-01EN  
5.3 Host Commands  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
0
x
0
x
0
1
0
0
L
HDNo. /LBA  
Start cylinder No. [MSB] / LBA  
Start cylinder No. [LSB] / LBA  
Start sector No.  
Transfer sector count  
xx  
/ LBA [LSB]  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
HDNo. /LBA  
x
L
x
x
End cylinder No. [MSB] / LBA  
End cylinder No. [LSB] / LBA  
End sector No.  
/ LBA [LSB]  
(*1)  
Error information  
*1 If the command is completed normally, the number of remaining  
sectors is set in this field.  
If the command is terminated because of an error, the number of  
sectors for which data has not been transferred is set in the field.  
C141-E203-01EN  
5-73  
Interface  
(21) WRITE MULTIPLE (X’C5’)  
The WRITE MULTIPLE command performs the same tasks as the WRITE SECTOR(S)  
command except that this command sends the PIO Setup FIS before sending data  
blocks of multiple sectors. The PIO Setup FIS is sent only before the first data block  
is transferred, and it is not sent before any subsequent transfer of sector blocks  
.
The number of sectors per block is defined by a successful SET MULTIPLE  
MODE command. The SET MULTIPLE MODE command should be executed  
prior to the WRITE MULTIPLE command.  
If the number of requested sectors is not divided evenly (having the same number  
of sectors [block count]), as many full blocks as possible are transferred, then a  
final partial block is transferred. The number of sectors in the partial block to be  
transferred is n where n = remainder of (“number of sectors”/”block count”).  
If the WRITE MULTIPLE command is issued before the SET MULTIPLE MODE  
command is executed or when WRITE MULTIPLE command is disabled, the  
device rejects the WRITE MULTIPLE command with an ABORTED  
COMMAND error.  
A disk write error that occurs during execution of the WRITE MULTIPLE  
command will be reported after a disk write operation has been attempted for the  
transferred blocks and partial block. The write operation stops at the sector where  
the error occurred (even if the write operation has not reached the end of the  
block). At this time, the number of remaining sectors (the error sector and  
subsequent sectors) and either cylinder, head, and sector addresses of the error  
sector (CHS mode) or the logical block address of the error sector (LBA mode) are  
set in the Shadow Block Register.  
Error reporting conditions  
(1) A specified address exceeds the range where write operations are allowed  
(after a transfer of dummy data, ST = 51h, ER = 10h).  
(2) The range where write operations are allowed will be exceeded by an address  
during a write operation (after a transfer of dummy data, ST = 51h, ER = 10h).  
(3) A write fault was detected when the write cache was disabled  
(ST = 71h, ER = 10h).  
(4) While the write cache is enabled, if the status indicating a completed transfer  
(STS = 50h) is returned and a data write operation failed because a write fault  
was detected during the data write operation, Abort will be returned for all  
subsequent ATA commands (ST = 71h, ER = 04h). This state is cleared the  
next time that the device is turned on.  
(5) The WRITE MULTIPLE command is disabled (ST = 51h, ER = 04h).  
(6) A SATA communication error occurred (ST = 51h, ER = 14h).  
(7) An error other than the above errors occurred (ST = 51h, ER = 04h).  
5-74  
C141-E203-01EN  
5.3 Host Commands  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
1
x
1
0
x
0
x
0
1
0
1
L
HDNo. /LBA  
CH  
Start cylinder No. [MSB] / LBA  
Start cylinder No. [LSB] / LBA  
CL  
SN  
Start sector No.  
Transfer sector count  
xx  
/ LBA [LSB]  
SC  
FR  
(R: Retry)  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
HDNo. /LBA  
x
L
x
x
Start cylinder No. [MSB] / LBA  
Start cylinder No. [LSB] / LBA  
Start sector No.  
/ LBA [LSB]  
00 (*1)  
Error information  
*1 If the command was terminated because of an error, the number of  
sectors for which data has not been written is set in this field.  
C141-E203-01EN  
5-75  
Interface  
(22) SET MULTIPLE MODE (X’C6’)  
This command enables the device to perform the READ MULTIPLE and  
WRITE MULTIPLE commands. The block count (number of sectors in a  
block) for these commands are also specified by the SET MULTIPLE MODE  
command.  
The number of sectors per block is written into the Sector Count field. The IDD  
supports block sizes of 2, 4, 8, and 16 sectors.  
Upon receipt of this command, the device checks the contents of the Sector Count  
field. If the contents of the Sector Count field is valid and is a supported block  
count, the value is stored for all subsequent READ MULTIPLE and WRITE  
MULTIPLE commands. Execution of these commands is then enabled. If the  
value of the Sector Count register is not a supported block count, an ABORTED  
COMMAND error is posted and the READ MULTIPLE and WRITE MULTIPLE  
commands are disabled.  
If the contents of the Sector Count field is 0, when the SET MULTIPLE MODE  
command is issued, the READ MULTIPLE and WRITE MULTIPLE commands  
are disabled.  
When the SET MULTIPLE MODE command operation is completed, the device  
reports the status to the host.  
In the default mode that is entered at power-on, the READ MULTIPLE and  
WRITE MULTIPLE commands are enabled (block count = 10h).  
Error reporting conditions  
(1) A value other than 00h, 02h, 04h, 08h, or 10h is specified in the SC field  
(ST = 51h, ER = 04h).  
(2) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
x
0
x
0
x
0
1
1
0
xx  
xx  
xx  
xx  
Sector count/block  
xx  
5-76  
C141-E203-01EN  
5.3 Host Commands  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
Sector count/block  
Error information  
C141-E203-01EN  
5-77  
Interface  
(23) READ DMA (X’C8’ or X’C9’)  
The READ DMA command reads data from sectors, starting from the sectors  
specified in the Device/Head, Cylinder High, Cylinder Low, and Sector Number  
fields and continuing for as many sectors as specified in the Sector Count field. A  
value ranging from 1 to 256 can be specified for the number of sectors. In order to  
specify 256, "00" must be set in the Sector Count field. For the protocol  
concerning data transfers, see Section 5.4.4.  
When the command is completed, either cylinder, head, and sector addresses (CHS  
mode) or the logical block address (LBA mode) of the last sector is stored in the  
Shadow Block Register.  
If an error such as an uncorrectable disk read error is detected during execution of  
the READ DMA command and continued operation not possible, the data transfer  
stops after all data, including the data of the sector where the error was detected, is  
transferred. The device notifies the host of the status by sending the Register DH  
FIS. At this time, the number of remaining sectors including the sector where the  
error was detected, and either cylinder, head, and sector addresses (CHS mode) or  
the logical block address (LBA mode) of the sector where the error was detected  
are stored in the Shadow Block Register.  
The host system can select the DMA transfer mode by using the SET FEATURES  
command, however, the transfer speed does not change.  
Multiword DMA transfer mode 0 to 2  
Ultra DMA transfer mode 0 to 5  
Error reporting conditions  
(1) A specified address exceeds the range where read operations are allowed  
(ST = 51h, ER = 10h).  
(2) The range where read operations are allowed will be exceeded by an address  
during a read operation (ST = 51h, ER = 10h).  
(3) An uncorrectable disk read error occurred (ST = 51h, ER = 40h).  
(4) The sync byte indicating the beginning of a sector was not found  
(ST = 51h, ER = 01h).  
(5) A SATA communication error occurred (ST = 51h, ER = 0Ch).  
(6) An error other than the above errors occurred (ST = 51h, ER = 04h).  
5-78  
C141-E203-01EN  
5.3 Host Commands  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
0
x
0
x
1
0
0
R
L
HDNo. /LBA  
Start cylinder No. [MSB] / LBA  
Start cylinder No. [LSB] / LBA  
Start sector No.  
Transfer sector count  
xx  
/ LBA [LSB]  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
HDNo. /LBA  
x
L
x
x
Start cylinder No. [MSB] / LBA  
Start cylinder No. [LSB] / LBA  
Start sector No.  
00 (*1)  
Error information  
/ LBA [LSB]  
*1 If the command is terminated due to an error, the remaining number  
of sectors of which data was not transferred is set in this register.  
C141-E203-01EN  
5-79  
Interface  
(24) WRITE DMA (X’CA’ or X’CB’)  
The WRITE DMA command writes data to sectors starting from the sectors  
specified in the Device/Head, Cylinder High, Cylinder Low, and Sector Number  
fields and continuing for as many sectors as specified in the Sector Count field. A  
value ranging from 1 to 256 can be specified for the number of the sectors. In  
order to specify 256, "00" must be set in the Sector Count field. For the protocol  
concerning data transfers, see Section 5.4.5.  
When the command is completed, cylinder, head, and sector addresses (CHS  
mode) of the last sector to which data was written is stored in the Shadow Block  
Register.  
If a disk write error is detected during execution of the WRITE DMA command  
and continued operation is not possible, command processing is terminated after  
all data, including the data of the sector where the error was detected, is  
transferred. The device notifies the host of the status by sending the Register DH  
FIS. At this time, the number of remaining sectors including the sector where the  
error was detected, and either cylinder, head, and sector addresses (CHS mode) or  
the logical block address (LBA mode) of the sector where the error was detected  
are stored in the Shadow Block Register.  
A host system can select the following transfer mode using the SET FEATURES  
command, however, the transfer speed does not change.  
Multiword DMA transfer mode 0 to 2  
Ultra DMA transfer mode 0 to 5  
Error reporting conditions  
(1) A specified address exceeds the range where write operations are allowed  
(after a transfer of dummy data, ST = 51h, ER = 10h).  
(2) The range where write operations are allowed will be exceeded by an address  
during a write operation (after a transfer of dummy data, ST = 51h, ER = 10h).  
(3) A write fault was detected when the write cache was disabled  
(ST = 71h, ER = 10h).  
(4) While the write cache is enabled, if the status indicating a completed transfer  
(STS = 50h) is returned and a data write operation failed because a write fault  
was detected during the data write operation, Abort will be returned for all  
subsequent ATA commands (ST = 71h, ER = 04h). This state is cleared the  
next time that the device is turned on.  
(5) A SATA communication error occurred (ST = 51h, ER = 14h).  
(6) An error other than the above errors occurred (ST = 51h, ER = 04h).  
5-80  
C141-E203-01EN  
5.3 Host Commands  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
0
x
0
x
1
0
1
R
L
HDNo. /LBA  
Start cylinder No. [MSB] / LBA  
Start cylinder No. [LSB] / LBA  
Start sector No.  
Transfer sector count  
xx  
/ LBA [LSB]  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
HDNo. /LBA  
x
L
x
x
Start cylinder No. [MSB] / LBA  
Start cylinder No. [LSB] / LBA  
Start sector No.  
00 (*1)  
Error information  
/ LBA [LSB]  
*1 If the command was terminated because of an error, the number of  
sectors for which data has not been written is set in this field.  
C141-E203-01EN  
5-81  
Interface  
(25) READ BUFFER (X’E4’)  
The host system can read the current contents of the data buffer of the device by  
issuing this command.  
Upon receipt of this command, the device transfers the PIO Setup. After that, the  
host system can read up to 512 bytes of data from the buffer.  
Error reporting conditions  
(1) A SATA communication error occurred (ST = 51h, ER = 0Ch).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
x
1
x
0
x
0
1
0
0
xx  
xx  
xx  
xx  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
Status information  
DH  
CH  
CL  
SN  
SC  
ER  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
5-82  
C141-E203-01EN  
5.3 Host Commands  
(26) FLUSH CACHE (X’E7’)  
This command is used to write every write cache data stored by the device into the  
medium. When the device completes all the data writing, it reports the status to  
the host system. The device performs every error recovery so that the data are read  
correctly.  
When executing this command, the writing of the data may take several seconds if  
much data are to be written.  
In case a non-recoverable disk write error has occurred while the data is being  
read, the error generation address is put into the shadow block register before  
ending the command. This error sector is deleted from the write cache data.  
Error reporting conditions  
(1) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
x
1
x
0
x
0
1
1
1
xx  
xx  
xx  
xx  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
C141-E203-01EN  
5-83  
Interface  
(27) WRITE BUFFER (X’E8’)  
The host system can overwrite the contents of the data buffer of the device with a  
desired data pattern by issuing this command. Upon receipt of this command, the  
device transfers the PIO Setup. After that, 512 bytes of data is transferred from the  
host and the device writes the data to the buffer, then reports the status .  
Error reporting conditions  
(1) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
x
1
x
0
x
1
0
0
0
xx  
xx  
xx  
xx  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
5-84  
C141-E203-01EN  
5.3 Host Commands  
(28) IDENTIFY DEVICE (X’EC’)  
The host system issues the IDENTIFY DEVICE command to read parameter  
information from the device. When it receives the command, the device prepares  
the parameter information to be sent to the host. Next, the device sends the PIO  
Setup FIS to the host, then sends the parameter information including a 512-byte  
date. Table 5.24 shows the values of the parameter words and the meaning in the  
buffer.  
Error reporting conditions  
(1) A SATA communication error occurred (ST = 51h, ER = 0Ch).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
x
1
x
0
x
1
1
0
0
xx  
xx  
xx  
xx  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
C141-E203-01EN  
5-85  
Interface  
(29) IDENTIFY DEVICE DMA (X’EE’)  
When this command is not used to transfer data to the host in DMA mode, this  
command functions in the same way as the Identify Device command.  
Error reporting conditions  
(1) A SATA communication error occurred (ST = 51h, ER = 0Ch).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
x
1
x
0
x
1
1
1
0
xx  
xx  
xx  
xx  
xx  
xx  
t command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
5-86  
C141-E203-01EN  
5.3 Host Commands  
Table 5.24 Information to be read by IDENTIFY DEVICE command (1/3)  
Word  
Value  
Description  
0
1
X’045A’  
X’3FFF’  
X’C837’  
X’0010’  
X’0000’  
X’003F’  
X’0000’  
General Configuration  
*1  
*2  
*3  
*2  
Number of Logical cylinders  
Detailed Configuration  
Number of Logical Heads  
Undefined  
2
3
4-5  
6
Number of Logical sectors per Logical track  
Undefined  
*2  
7-9  
10-19  
20  
21  
22  
Set by a device Serial number (ASCII code, 20 characters, right)  
X’0003’  
X’xxxx’  
X’0004’  
Undefined  
Buffer Size (1 LSB: 512 Bytes) ex. Buffer Size=8MBytes: X’4000’  
Number of ECC bytes transferred at READ LONG or WRITE  
LONG command  
23-26  
27-46  
47  
Firmware revision (ASCII code, 8 characters, left)  
Set by a device Model name (ASCII code, 40 characters, left)  
X’8010’  
Maximum number of sectors per block on READ/WRITE  
MULTIPLE command  
48  
49  
X’0000’  
X’2F00’  
X’4000’  
X’0200’  
X’0200’  
X’0007’  
(Variable)  
(Variable)  
(Variable)  
(Variable)  
*8  
Reserved  
Capabilities  
*4  
*5  
*6  
50  
Capabilities  
51  
PIO data transfer mode  
Reserved  
52  
53  
Enable/disable setting of words 54-58 and 64-70, 88  
Number of current Cylinders  
Number of current Head  
Number of current sectors per track  
Total number of current sectors  
*7  
54  
55  
56  
57-58  
59  
Transfer sector count currently set by READ/WRITE MULTIPLE  
command *8  
60-61  
62  
*2  
Total number of user addressable sectors (LBA mode only) *2  
Reserved  
X’0000’  
X’xx07’  
X’0003’  
63  
Multiword DMA transfer mode  
*9  
64  
Advance PIO transfer mode support status  
*10  
C141-E203-01EN  
5-87  
Interface  
Table 5.24 Information to be read by IDENTIFY DEVICE command (2/3)  
Word  
Value  
Description  
65  
66  
X’0078’  
X’0078’  
X’00F0’  
X’0078’  
X’0000’  
X ' 001F '  
X ' 0302 '  
X ' 0000 '  
X ' 0004 '  
X ' 0000 '  
X’00F8’  
X’001A’  
X’346B’  
X’7F09’  
X’60xx’  
*15  
Minimum multiword DMA transfer cycle time per word: 120 [ns]  
Manufacturer’s recommended DMA transfer cycle time: 120 [ns]  
Minimum PIO transfer cycle time without IORDY flow control: 240 [ns]  
Minimum PIO transfer cycle time with IORDY flow control: 120 [ns]  
Reserved  
67  
68  
69-74  
75  
Queue depth  
*11  
*12  
76  
Serial ATA capabilities  
77  
Reserved for Serial ATA  
Support of Serial ATA function  
Valid of Serial ATA function  
Major version number  
78  
*13  
*14  
*11  
79  
80  
81  
Minor version number  
82  
Support of command sets  
Support of command sets  
Support of command sets/function  
Valid of command sets/function  
Valid of command sets/function  
Default of command sets/function  
Ultra DMA transfer mode  
*12  
*13  
*14  
*15  
*16  
*17  
*18  
*19  
83  
84  
85  
86  
*16  
87  
*17  
88  
X’xx3F’  
89  
Set by a device Security Erase Unit execution time (1 LSB: 2 min.)  
90  
X’0000’  
(Variable)  
(Variable)  
X’0000’  
(Variable)  
X’0000’  
X’xx’  
Enhanced Security Erase Unit execution time (1 LSB: 2 min.)  
91  
Advance power management level  
Master password revision  
COMRESET Result  
92  
93  
94  
Acoustic Management level  
Reserved  
*21  
95-99  
100-103  
Total number of sectors accessible by users in the 48-bit LBA mode  
*22  
104-105  
106  
X’00’  
*26  
Reserved  
Logical sector size per logical sector  
Reserved  
107-116  
X ' 0000 '  
5-88  
C141-E203-01EN  
5.3 Host Commands  
Table 5.24 Information to be read by IDENTIFY DEVICE command (3/3)  
Word  
Value  
Description  
Number of words for logical sectors  
117-118  
119-127  
128  
X ' 0100 '  
X ' 0000 '  
X’0xxx’  
X’xxxx’  
X’0000’  
X’xxA5’  
Reserved  
Security status  
Undefined  
Reserved  
*23  
129-159  
160-254  
255  
Check sum (The 2 complement of the lower order byte resulting from  
summing bits 7 to 0 of word 0 to 254 and word 255, in byte units.)  
*1 Word 0: General configuration  
Bit 15:  
ATA device = 0, ATAPI device = 1  
Bit 14-8: Undefined  
Bit 7:  
Removable disk drive = 1  
Bit 6:  
Fixed drive = 1  
Bit 5-3:  
Bit 2:  
Undefined  
IDENTIFY DEVICE Valid = 0  
Reserved  
Bit 1-0:  
*2 Word 1, 3, 6, 60-61  
Word  
MHT2080BH  
MHT2060BH  
X ' 3FFF '  
X ' 10 '  
MHT2040BH  
X ' 3FFF '  
X ' 10 '  
1
3
X ' 3FFF '  
X ' 10 '  
6
X ' 3F '  
X ' 3F '  
X ' 3F '  
60-61  
X ' 950F8B0 '  
X ' 6FC7C80 '  
X '4A85300 '  
*3 Status of the Word 2 Identify information is shown as follows:  
37C8h  
The device requires the SET FEATURES sub-command after the  
power-on sequence in order to spin-up. The Identify information  
is incomplete.  
738Ch  
The device requires the SET FEATURES sub-command after the  
power-on sequence in order to spin-up. The Identify information  
is incomplete.  
C141-E203-01EN  
5-89  
Interface  
8C73h  
C837h  
Others  
The device requires the SET FEATURES sub-command after the  
power-on sequence in order to spin-up. The Identify information  
is incomplete.  
The device requires the SET FEATURES sub-command after the  
power-on sequence in order to spin-up. The Identify information  
is incomplete.  
Reserved  
*4 Word 49: Capabilities  
Bit 15-14: Reserved  
Bit 13:  
Bit 12:  
Bit 11:  
Standby timer value. ATA spec is '1.'  
Reserved  
'1' = IORDY supported  
Bit 10:  
Bit 9:  
Bit 8:  
'1' = IORDY inhibition supported  
'1' = DMA supported  
'1' = LBA supported  
Bit 7-0:  
Undefined  
*5 Word 50: Device capability  
Bit 15:  
Bit 14:  
0
1
Bit 13 to 1 Reserved  
Bit 0 Standby timer value '1' = Standby timer value of the device is the  
smallest value.  
*6 Word 51: PIO data transfer mode  
Bit 15-8: PIO data transfer mode  
X’02’=PIO mode 2 supported  
Bit 7-0:  
Undefined  
*7 Word 53: Enable/disable setting of word 54-58 and 64-70  
Bit 15-3: Reserved  
Bit 2:  
Bit 1:  
Bit 0:  
'1' = Enable the word 88  
'1' = Enable the word 64-70  
'1' = Enable the word 54-58  
5-90  
C141-E203-01EN  
5.3 Host Commands  
*8 Word 59: Transfer sector count currently set by READ/WRITE  
MULTIPLE command  
Bit 15-9: Reserved  
Bit 8:  
'1' = Enable the multiple sector transfer  
Bit 7-0:  
Transfer sector count currently set by READ/WRITE MULTIPLE  
command without interrupt supports 2, 4, 8 and 16 sectors.  
*9 Word 63: Multiword DMA transfer mode  
Bit 15-11: Reserved  
Bit 10:  
Bit 9:  
Bit 8:  
Bit 7-3:  
Bit 2:  
Bit 1:  
Bit 0:  
'1' = multiword DMA mode 2 is selected.  
'1' = multiword DMA mode 1 is selected.  
'1' = multiword DMA mode 0 is selected.  
Reserved  
'1' = Multiword DMA mode 2, 1, and 0 supported (Bit 1 = 0 = '1')  
'1' = Multiword DMA mode 1, and 0 supported (Bit 0 = '1')  
'1' = Mode 0  
*10 Word 64: Advance PIO transfer mode support status  
Bit 15-8: Reserved  
Bit 7-0:  
Bit 1:  
Advance PIO transfer mode  
'1' = Mode 4 supported  
'1' = Mode 3 supported  
Bit 0:  
*11 WORD 75: X ' 001F ' (32)  
*12 WORD 76  
Bit15-10: Reserved  
Bit 9:  
'1' = Supports the Power Management initiation request from  
the host system.  
Bit 8:  
Bit 7-4:  
Bit 3:  
Bit 2:  
Bit 1:  
'1' = Supports the Native command queueing.  
Reserved  
Reserved for SATA  
'1' = Supports the Gen-2 signaling rete.  
'1' = Supports the Gen-1 signaling rete.  
Bit 0: Reserved  
C141-E203-01EN  
5-91  
Interface  
*13 WORD 78  
Bit15-5: Reserved  
Bit 4:  
Bit 3:  
'1'= Supports the in-order data delivery.  
'1'= Supports the Power Management initiation from the device to  
the host system.  
Bit 2:  
Bit 1:  
'1' = Supports the DMA Setup FIS Auto-Activate optimization.  
'1' = Supports the non-zero buffer offset in the DMA Setup FIS.  
Reserved  
Bit 0:  
*14 WORD 79  
Bit15-5: Reserved  
Bit 4:  
Bit 3:  
'1' = Enables the in-order data delivery.  
'1' = Enables the Power Management initiation function from Bit 2:  
'1' = Enables the Auto-Activate optimization function in the DMA  
Setup FIS.  
Bit 1:  
'1' = Enables the non-zero buffer offset function in the DMA Setup  
FIS.  
Bit 0:  
Reserved  
*15 WORD 80  
Bit 15-8: Reserved  
Bit 7:  
Bit 6:  
Bit 5:  
Bit 4:  
Bit 3:  
Bit 2:  
'1' = ATA/ATAPI-7 supported  
'1' = ATA/ATAPI-6 supported  
'1' = ATA/ATAPI-5 supported  
'1' = ATA/ATAPI-4 supported  
'1' = ATA-3 supported  
'1' = ATA-2 supported  
Bit 1-0:  
Undefined  
*16 WORD 82  
Bit 15:  
Bit 14:  
Bit 13:  
Bit 12:  
Bit 11:  
Undefined  
'1' = Supports the NOP command.  
'1' = Supports the READ BUFFER command.  
'1' = Supports the WRITE BUFFER command.  
Undefined  
5-92  
C141-E203-01EN  
5.3 Host Commands  
'1' = Supports the Host Protected Area feature set.  
Bit 10:  
Bit 9:  
Bit 8:  
Bit 7:  
Bit 6:  
Bit 5:  
Bit 4:  
Bit 3:  
Bit 2:  
Bit 1:  
'1' = Supports the DEVICE RESET command.  
'1' = Supports the SERVICE interrupt.  
'1' = Supports the release interrupt.  
'1' = Supports the read cache function.  
'1' = Supports the write cache function.  
'1' = Supports the PACKET command feature set.  
'1' = Supports the power management feature set.  
'1' = Supports the Removable Media feature set.  
'1' = Supports the Security Mode feature set.  
'1' = Supports the SMART feature set.  
Bit 0:  
*17 WORD 83  
Bit 15:  
Bit 14:  
Bit 13: *  
Bit 12:  
Bit 11:  
Bit 10:*  
Bit 9:  
= 0  
= 1  
'1' = Supports the FLUSH CACHE EXT command.  
'1' = Supports the FLUSH CACHE command.  
'1' = Supports the Device Configuration Overlay feature set.  
'1' = 48 bit LBA feature set.  
'1' = Automatic Acoustic Management feature set.  
'1' = Supports the SET MAX Security extending command.  
Reserved  
Bit 8:  
Bit 7:  
Bit 6:  
'1' = When the power is turned on, spin is started by the SET  
FEATURES sub-command.  
Bit 5:  
Bit 4:  
Bit 3:  
Bit 2:  
Bit 1:  
Bit 0:  
'1' = Supports the Power-Up In Standby set.  
'1' = Supports the Removable Media Status Notification feature set.  
'1' = Supports the Advanced Power Management feature set.  
'1' = Supports the CFA (Compact Flash Association) feature set.  
'1' = Supports the READ/WRITE DMA QUEUED command.  
'1' = Supports the DOWNLOAD MICROCODE command.  
*: Option (customizing)  
C141-E203-01EN  
5-93  
Interface  
*18 WORD 84  
Bit 15:  
= 0 The device always returns the fixed value indicated on the left.  
= 1 The device always returns the fixed value indicated on the left.  
'1' = Support the Unload Immediate command.  
Bit 14:  
Bit 13:  
Bit 12-9 Reserved  
Bit 8  
Bit 7  
Bit 6  
'1' = Support the World wide name.  
'1' = Support the WRITE DMA QUEUED FUA EXT command. *  
'1' = Support the WRITE DMA FUA EXT and WRITE MULTIPLE  
FUA EXT commands. *  
Bit 5  
‘1’= Support the General Purpose Logging feature.  
Bit 4-2 Reserved  
Bit 1:  
Bit 0:  
'1' = Supports the SMART SELF-TEST.  
'1' = Supports the SMART Error Logging.  
* Option (customizing)  
*19 WORD 85  
Bit 15:  
Undefined.  
Bit 14:  
Bit 13:  
Bit 12:  
Bit 11:  
Bit 10:  
Bit 9:  
'1' = Supports the NOP command.  
'1' = Supports the READ BUFFER command.  
'1' = Supports the WRITE BUFFER command.  
Undefined.  
'1' = Supports the Host Protected Area function.  
'1' = Supports the DEVICE RESET command.  
Bit 8:  
'1' = Enables the SERVICE interrupt. From the SET FEATURES  
command  
Bit 7:  
Bit 6:  
'1' = Enables the release interrupt. From the SET FEATURES  
command  
'1' = Enables the read cache function. From the SET FEATURES  
command  
Bit 5:  
Bit 4:  
Bit 3:  
Bit 2:  
Bit 1:  
Bit 0:  
'1' = Enables the write cache function.  
'1' = Enables the P PACKET command set.  
'1' = Supports the Power Management function.  
'1' = Supports the Removable Media function.  
'1' = From the SECURITY SET PASSWORD command  
'1' = From the SMART ENABLE OPERATION command  
5-94  
C141-E203-01EN  
5.3 Host Commands  
*20 WORD 86  
Bits 15:  
Reserved  
Bit 13-10: Same definition as WORD 83.  
Bit 9:  
'1' = Enables the Automatic Acoustic Management function from  
the SET FEATURES command  
Bit 8:  
'1' = From the SET MAX SET PASSWORD command  
Bits 7-6: Same definition as WORD 83.  
Bit 5:  
Bit 4:  
Bit 3:  
'1' = Enables the Power-Up In Standby function.  
'1' = Enables the Removable Media Status Notification function.  
'1' = Enables the Advanced Power Management function.  
Bits 2-0: Same definition as WORD 83.  
*21 WORD 87  
Bit 15:  
Bit 14:  
= 0 The device always returns the fixed value indicated on the left.  
= 1 The device always returns the fixed value indicated on the left.  
Bits 13-0: Same definition as WORD 84.  
*22 WORD 88  
Bit 15-14: Currently used Ultra DMA transfer mode  
Bit 13:  
Bit 12:  
Bit 11:  
Bit 10:  
Bit 9:  
'1' = Mode 5 is selected.  
'1' = Mode 4 is selected.  
'1' = Mode 3 is selected.  
'1' = Mode 2 is selected.  
'1' = Mode 1 is selected.  
'1' = Mode 0 is selected.  
Supportable Ultra DMA transfer mode  
'1' = Supports the Mode 5  
'1' = Supports the Mode 4  
'1' = Supports the Mode 3  
'1' = Supports the Mode 2  
'1' = Supports the Mode 1  
Bit 8:  
Bit 7-0:  
Bit 5:  
Bit 4:  
Bit 3:  
Bit 2:  
Bit 1:  
Bit 0: '1' = Supports the Mode 0  
C141-E203-01EN  
5-95  
Interface  
*23 WORD 89  
MHT2080BH = X'28': 80 minutes  
MHT2060BH = X'1E': 60 minutes  
MHT2040BH = X'14': 40 minutes  
*24 WORD 94  
Bit 15-8: X'FE' Recommended acoustic management value.  
Bit 7-0:  
X'XX' Current set value.  
FE-C0: Performance mode  
BF-80: Acoustic mode  
00:  
Acoustic management is unused it. (It is same as "FE-CO")  
*25 WORD 100-103  
When "48 bit LBA" of the option (customize) is supported, same number of  
LBA as WORD 60-61 is displayed.  
*26 WORD 106  
Bit 15:  
Bit 14:  
Bit13:  
Bit12:  
= 0 The device always returns the fixed value indicated on the left.  
= 1 The device always returns the fixed value indicated on the left.  
'1' = Each device has several logical sectors per physical sector.  
'1' = Logical sector of the device is grater than 256 Words.  
Bit11-4: Reserved  
Bit3-0:  
Logical sector size per physical sector  
*27 WORD 128  
Bit 15-9: Reserved  
Bit 8:  
Bit 7-6:  
Bit 5:  
Bit 4:  
Bit 3:  
Bit 2:  
Bit 1:  
Bit 0:  
Security level. 0: High, 1: Maximum  
Reserved  
'1' = Enhanced security erase supported  
'1' = Security counter expired  
'1' = Security frozen  
'1' = Security locked  
'1' = Security enabled  
'1' = Security supported  
5-96  
C141-E203-01EN  
5.3 Host Commands  
(30) SET FEATURES (X’EF’)  
The host system issues the SET FEATURES command to set parameters in the  
Features field for the purpose of changing the device features to be executed.  
Upon receipt of this command, the device sets the parameters in the Features field,  
then reports the status to the host system.  
If the value in the Features field is not supported or it is invalid, the device posts an  
ABORTED COMMAND error.  
Table 5.25 lists the available values and operational modes that may be set in the  
Features field.  
Table 5.25 Features field values and settable modes (1/2)  
Features  
Field  
Drive operation mode  
X ' 02 '  
X ' 03 '  
X ' 04 '  
X ' 05 '  
X ' 06 '  
X ' 07 '  
X ' 10 '  
X ' 33 '  
X ' 42 '  
X ' 54 '  
X ' 55 '  
X ' 66 '  
X ' 77 '  
X ' 81 '  
X ' 82 '  
X ' 84 '  
X ' 85 '  
X ' 86’  
X ' 88’  
X ' 90’  
Enables the write cache function.  
Set the data transfer mode.  
*1  
*2  
Enables the automatic reassign. (Note)  
Enables the advanced power management function.  
Enables the Power-Up In Standby function. (Note)  
Spin up the Power-Up In Standby status device. (Note)  
Enables the Serial ATA function.  
*3  
*4  
Undefined (Note)  
Enables the Acoustic management function.  
Undefined (Note)  
Disables the read cache function.  
Disables the reverting to power-on default settings after software reset. (Note)  
Undefined (Note)  
Prohibit the 8-bit data transfer. (Note)  
Disables the write cache function.  
Enables the automatic shift. (Note)  
Set the advanced power management mode to Mode-0.  
Prohibit the Power-Up In Standby function. (Note)  
Undefined (Note)  
Disables the Serial ATA function.  
C141-E203-01EN  
5-97  
Interface  
Table 5.25 Features field values and settable modes (2/2)  
Features  
Field  
Drive operation mode  
X ' AA '  
Enables the read cache function.  
Specifies the transfer of 4-byte ECC for READ LONG and WRITE LONG  
commands. (Note)  
X ' BB '  
X ' C2 '  
X ' CC '  
Disables the Acoustic management function.  
Enables the reverting to power-on default settings after software reset. (Note)  
Note: Although there is a response to the command, nothing is done.  
At power-on or after COMRESET, the default mode is set as follows.  
Write cashe function  
Transfer mode  
: Enabled  
: PIO Mode-4, Multiworld DMA Mode-2  
Advanced power  
management function  
: Enabled (Mode-1)  
Acoustic  
management function  
: State keeping  
: Enabled  
Read cashe function  
Serial ATA function  
: Prohibited  
Error reporting conditions  
(1) An undefined code is specified in the FR or SC field (ST = 51h, ER = 04h).  
(2) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block O registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
x
1
x
0
x
1
1
1
1
xx  
xx  
xx  
xx  
xx or *1~3  
[See Table 5.6]  
5-98  
C141-E203-01EN  
5.3 Host Commands  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
E
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
*1) Data Transfer Mode  
The host sets X’03’ to the Features field. By issuing this command with setting a  
value to the Sector Count field, the transfer mode can be selected. Upper 5 bits of  
the Sector Count register defines the transfer type and lower 3 bits specifies the  
binary mode value.  
The IDD supports following values in the Sector Count field value. If other value  
than below is specified, an ABORTED COMMAND error is posted.  
Note: For a serial ATA device, the setting of a data transfer mode is reflected in  
WORD 63 and 88 in IdentifyDevice information. However, the actual  
data transfer rate depends on the serial ATA signaling rate in WORD 76 in  
IdentifyDevice information.  
Transfer mode  
Sector Count file  
00000 000 (X’00’)  
PIO default transfer mode  
PIO flow control transfer mode X  
00001 000 (X’08’: Mode 0)  
00001 001 (X’09’: Mode 1)  
00001 010 (X’0A’: Mode 2)  
00001 011 (X’0B’: Mode 3)  
00001 100 (X’0C’: Mode 4)  
00010 000 (X ' 10 ' : Mode 0)  
00010 001 (X ' 11 ' : Mode 1)  
00010 010 (X ' 12 ' : Mode 2)  
Single word DMA Mode X  
C141-E203-01EN  
5-99  
Interface  
Transfer mode  
Sector Count file  
00100 000 (X’20’: Mode 0)  
00100 001 (X’21’: Mode 1)  
00100 010 (X’22’: Mode 2)  
01000 000 (X’40’: Mode 0)  
01000 001 (X’41’: Mode 1)  
01000 010 (X’42’: Mode 2)  
01000 011 (X’43’: Mode 3)  
01000 100 (X’44’: Mode 4)  
01000 101 (X’45’: Mode 5)  
Multiword DMA transfer mode X  
Ultra DMA transfer mode X  
*2) Advanced Power Management (APM)  
The host writes the Sector Count field with the desired power management level  
and executes this command with the Features field X’05’, and then Advanced  
Power Management is enabled.  
The drive automatically shifts to power saving mode up to the specified APM level  
when the drive does not receive any commands for a specific time. The sequence  
in which the power management level shifts is from Active Idle to Low Power Idle  
to Standby. The Mode-2 level requires the longest shifting time, depending on the  
APM level settings. The settings of the APM level revert to their default values  
(Mode-1) when power-on or a hardware reset occurs for the drive.  
APM Level  
Sector Count Field  
C0h-FEh  
80h-BFh  
01h-7Fh  
00h, FFh  
Mode 0 Active Idle Low Power Idle  
Mode 1 Active Idle Low Power Idle  
Mode 2 Active Idle Low Power Idle Standby  
Reserve (State Keep)  
Active Idle:  
The spindle motor rotates, and the head is loaded on  
the most inner position on media.  
Low Power Idle: The spindle motor rotates, and the head is unloaded.  
Standby: The spindle motor stops, and the head is unloaded.  
5-100  
C141-E203-01EN  
5.3 Host Commands  
*3) Serial ATA Functions  
The host can enable and disable the following Serial ATA functions by issuing this  
command after setting X'10/90' in the Features field and an applicable value in the  
Sector Count field:  
Serial ATA function  
Sector Count field  
Non-zero buffer offset in DMA Setup FIS  
DMA Setup FIS Auto-Activate optimization  
Device-initiated interface power state Transitions  
Guaranteed In-Order Data Deliverry  
Asynchronous Notification  
01h (*1)  
02h (*2)  
03h (*3)  
04h (*1)  
05h (*1)  
*1 The device normally responds to the command but performs no operation.  
*2 This feature is prohibited when power is on. While this function is  
enabled, the device does not return the DMA Activate FIS for the first data  
sector after the WRITE FP DMA QUEUED command is issued.  
*3 This specification is prohibited when power on. While this function is  
enabled, the device perform interface power save.  
*4) Automatic Acoustic Management (AAM)  
The host writes to the Sector Count filed with the requested acoustic management  
level and executes this command with subcommand code 42h, and then Automatic  
Acoustic Management is enabled. The AAM level setting is preserved by the drive  
across power on and COMRESET.  
AAM Level  
Sector Count Filed  
Performance mode (Fast Seek)  
Acoustic mode (Slow Seek)  
Abort  
C0h-FEh  
80h-BFh  
01h-7Fh  
00h, FFh  
Non Operate  
High-speed seek to which gives priority to the performance operates as for  
"Performance mode", and low-speed seek by which the seek sound is suppressed  
operates as for "Acoustic mode".  
Setting the seek mode by this command is applied to the seek operation in all  
command processing.  
C141-E203-01EN  
5-101  
Interface  
(31) SECURITY SET PASSWORD (X’F1’)  
This command enables a user password or master password to be set.  
The host transfers the 512-byte data shown in Table 5.26 to the device. The device  
determines the operation of the lock function according to the specifications of the  
Identifier bit and Security level bit in the transferred data. (Table 5.27)  
Issuing this command in LOCKED MODE or FROZEN MODE returns the  
Aborted Command error.  
Table 5.26 Contents of SECURITY SET PASSWORD data  
Word  
0
Contents  
Control word  
Bit 0 Identifier  
0 = Sets a user password.  
1 = Sets a master password.  
Bits 1 to 7 Reserved  
Bit 8 Security level  
0 = High  
1 = Maximum  
Bits 9 to 15 Reserved  
1 to 16  
17  
Password (32 bytes)  
Master password version number  
18 to 255 Reserved  
Table 5.27 Relationship between combination of Identifier and Security level, and  
operation of the lock function  
Identifier  
User  
Level  
High  
Description  
The specified password is set as a new user password. The  
lock function is enabled after the device is turned off and  
then on. LOCKED MODE can be canceled using the user  
password or the master password already set.  
Master  
User  
High  
The specified password is set as a new master password.  
The lock function is not enabled.  
Maximum The specified password is set as a new user password. The  
lock function is enabled after the device is turned off and  
then on. LOCKED MODE can be canceled using the user  
password only. The master password already set cannot  
cancel LOCKED MODE.  
Master  
Maximum The specified password is set as a new master password.  
The lock function is not enabled.  
5-102  
C141-E203-01EN  
5.3 Host Commands  
Error reporting conditions  
(1) The device is in Security Locked mode (ST = 51h, ER = 04h).  
(2) The device is in Security Frozen mode (ST = 51h, ER = 04h).  
(3) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
x
1
x
1
x
0
0
0
1
xx  
xx  
xx  
xx  
xx  
xx  
At command completion (Shadow Block Register contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
C141-E203-01EN  
5-103  
Interface  
(32) SECURITY UNLOCK(X’F2’)  
This command cancels LOCKED MODE.  
The host transfers the 512-byte data shown in Table 5.28 to the device. Operation  
of the device varies as follows depending on whether the host specifies the master  
password.  
When the master password is selected  
When the security level is LOCKED MODE is high, the password is compared  
with the master password already set. If the passwords are the same, LOCKED  
MODE is canceled. Otherwise, the Aborted Command error is returned. If the  
security level in LOCKED MODE is set to the highest level, the Aborted  
Command error is always returned.  
When the user password is selected  
The password is compared with the user password already set. If the passwords  
are the same, LOCKED MODE is canceled. Otherwise, the Aborted Command  
error is returned.  
If the password comparison fails, the device decrements the UNLOCK counter.  
The UNLOCK counter initially has a value of five. When the value of the  
UNLOCK counter reaches zero, this command or the SECURITY ERASE UNIT  
command causes the Aborted Command error until the device is turned off and  
then on, or until a COMRESET is executed. Issuing this command with LOCKED  
MODE canceled (in UNLOCK MODE) has no affect on the UNLOCK counter.  
Error reporting conditions  
(1) An incorrect password is specified (ST = 51h, ER = 04h).  
(2) The device is in Security Frozen mode (ST = 51h, ER = 04h).  
(3) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
x
1
x
1
x
0
0
1
0
xx  
xx  
xx  
xx  
xx  
xx  
5-104  
C141-E203-01EN  
5.3 Host Commands  
At command completion (Shadow Block Register contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
C141-E203-01EN  
5-105  
Interface  
(33) SECURITY ERASE PREPARE (X’F3’)  
The SECURITY ERASE UNIT command feature is enabled by issuing the  
SECURITY ERASE PREPARE command and then the SECURITY ERASE UNIT  
command. The SECURITY ERASE PREPARE command prevents data from  
being erased unnecessarily by the SECURITY ERASE UNIT command.  
Error reporting conditions  
(1) An incorrect password is specified (ST = 51h, ER = 04h).  
(2) The device is in Security Frozen mode (ST = 51h, ER = 04h).  
(3) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
1
x
1
x
1
x
1
x
0
0
1
1
xx  
xx  
xx  
xx  
xx  
xx  
CH  
CL  
SN  
SC  
FR  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
5-106  
C141-E203-01EN  
5.3 Host Commands  
(34) SECURITY ERASE UNIT (X’F4’)  
This command erases all user data. This command also invalidates the user  
password and releases the lock function.  
The host transfers the 512-byte data shown in Table 5.28 to the device. The device  
compares the user password or master password in the transferred data with the user  
password or master password already set. The device erases user data, invalidates  
the user password, and releases the lock function if the passwords are the same.  
Although this command invalidates the user password, the master password is retained.  
To recover the master password, issue the SECURITY SET PASSWORD  
command and reset the user password.  
Error reporting conditions  
(1) An incorrect password is specified (ST = 51h, ER = 04h).  
(2) The Security Erase Prepare command did not complete normally beforehand  
(ST = 51h, ER = 04h).  
(3) The device is in Security Frozen mode (ST = 51h, ER = 04h).  
(4) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
1
x
1
x
1
x
1
x
0
1
0
0
xx  
CH  
CL  
SN  
SC  
FR  
xx  
xx  
xx  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
Status information  
DH  
x
x
x
x
xx  
CH  
CL  
SN  
SC  
ER  
xx  
xx  
xx  
xx  
Error information  
C141-E203-01EN  
5-107  
Interface  
(35) SECURITY FREEZE LOCK (X’F5’)  
This command puts the device into FROZEN MODE. The following commands  
used to change the lock function return the Aborted Command error if the device is  
in FROZEN MODE.  
SECURITY SET PASSWORD  
SECURITY UNLOCK  
SECURITY DISABLE PASSWORD  
SECURITY ERASE PREPARE  
SECURITY ERASE UNIT  
FROZEN MODE is canceled when the power is turned off, or when COMRESET  
is reseted.  
If this command is reissued in FROZEN MODE, the command is completed and  
FROZEN MODE remains unchanged.  
The following medium access commands return the Aborted Command error when  
the device is in LOCKED MODE:  
READ DMA (EXT)  
READ LONG  
READ MULTIPLE (EXT)  
READ SECTORS  
READ VERIFY SECTORS  
WRITE DMA (EXT)  
WRITE LONG  
WRITE MULTIPLE (EXT)  
WRITE SECTORS (EXT)  
WRITE VERIFY  
SECURITY DISABLE PASSWORD  
SECURITY FREEZE LOCK  
SECURITY SET PASSWORD  
SET MAX ADDRESS (EXT)  
5-108  
C141-E203-01EN  
5.3 Host Commands  
FLUSH CACHE (EXT)  
DCO RESTORE  
DCO SET  
WRITE MULTIPLE FUA EXT  
WRITE DMA FUA EXT  
READ FP DMA QUEUED  
WRITE FP DMA QUEUED  
Error reporting conditions  
(1) The device is in Security Locked mode (ST = 51h, ER = 04h).  
(2) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
x
1
x
1
x
0
1
0
1
xx  
xx  
xx  
xx  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
C141-E203-01EN  
5-109  
Interface  
(36) SECURITY DISABLE PASSWORD (X’F6’)  
This command invalidates the user password already set and releases the lock  
function.  
The host transfers the 512-byte data shown in Table 5.28 to the device. The device  
compares the user password or master password in the transferred data with the  
user password or master password already set, and releases the lock function if the  
passwords are the same.  
Although this command invalidates the user password, the master password is  
retained. To recover the master password, issue the SECURITY SET  
PASSWORD command and reset the user password.  
If the user password or master password transferred from the host does not match,  
the Aborted Command error is returned.  
Issuing this command while in LOCKED MODE or FROZEN MODE returns the  
Aborted Command error.  
(The section about the SECURITY FREEZE LOCK command describes LOCKED  
MODE and FROZEN MODE.)  
Table 5.28 Contents of security password  
Word  
0
Contents  
Control word  
Bit 0: Identifier  
0 = Compares the user passwords.  
1 = Compares the master passwords.  
Bits 1 to 15: Reserved  
1 to 16  
Password (32 bytes)  
17 to 255 Reserved  
5-110  
C141-E203-01EN  
5.3 Host Commands  
Error reporting conditions  
(1) An incorrect password is specified (ST = 51h, ER = 04h).  
(2) The device is in Security Locked mode (ST = 51h, ER = 04h).  
(3) The device is in Security Frozen mode (ST = 51h, ER = 04h).  
(4) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents))  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
x
1
x
1
x
0
1
1
0
xx  
xx  
xx  
xx  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
x
x
x
x
xx  
xx  
xx  
xx  
xx  
Error information  
C141-E203-01EN  
5-111  
Interface  
(37) READ NATIVE MAX ADDRESS (X’F8’)  
This command posts the maximum address intrinsic to the device, which can be set  
by the SET MAX ADDRESS command. Upon receipt of this command, the device  
indicates the maximum address in the DH, CH, CL and SN field. Then reports the  
status to the host system.  
Error reporting conditions  
(1) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
1
x
1
x
1
0
0
0
L
xx  
xx  
xx  
xx  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
Max head/LBA [MSB]  
x
x
x
x
CYL No. [MSB] / LBA  
CYL No. [LSB] / LBA  
SCT No.  
/ LBA[LSB]  
xx  
Error information  
5-112  
C141-E203-01EN  
5.3 Host Commands  
(38) SET MAX (X’F9’)  
SET MAX Features Register Values  
Value  
00h  
Command  
Obsolete  
01h  
SET MAX SET PASSWORD  
SET MAX LOCK  
02h  
03h  
SET MAX UNLOCK  
SET MAX FREEZE LOCK  
Reserved  
04h  
05h - FFh  
SET MAX ADDRESS  
A successful READ NATIVE MAX ADDRESS command shall immediately  
precede a SET MAX ADDRESS command.  
This command allows the maximum address accessible by the user to be set in LBA  
or CHS mode. Upon receipt of the command, the device saves the maximum address  
specified in the DH, CH, CL and SN field then, reports the status to the host.  
The new address information set by this command is reflected in Words 1, 54, 57,  
58, 60 and 61 of IDENTIFY DEVICE information. If an attempt is made to  
perform a read or write operation for an address beyond the new address space, an  
ID Not Found error will result.  
When SC field bit 0, VV (Value Volatile), is 1, the value set by this command is  
held even after power on and the occurrence of a hard reset. When the VV bit is 0,  
the value set by this command becomes invalid when the power is turned on or a  
ComRest occurs, and the maximum address returns to the value most lately set  
when VV bit = 1. (The value by VV bit = 0 is held in case that this command with  
VV bit = 1 has not been issued or had set the default value, and ComRest occurs.)  
When the READ NATIVE MAX ADDRESS command has been issued  
immediately preceding this command, this command operates normally as the SET  
MAX ADDRESS command. Otherwise, this command operates as one of the SET  
MAX subcommands depending on the value in the Features field. The  
subcommands are explained below.  
After power on and the occurrence of a ComRest, the host can issue this command  
only once when VV bit = 1. If this command with VV bit = 1 is issued twice or more,  
any command following the first time will result in an Aborted Command error.  
When the SET MAX ADDRESS EXT command is executed, all SET MAX  
ADRESS commands are aborted. The address value returns to the origin when the  
SET MAX ADDRESS EXT command is executed using the address value returned  
by the READ NATIVE MAX ADDRESS command.  
C141-E203-01EN  
5-113  
Interface  
Error reporting conditions  
(1) The command has been issued more than twice (ST = 51h, ER = 10h).  
(2) The READ NATIVE MAX ADDRESS command has not been issued prior to  
the SET MAX ADDRESS command. (ST = 51h, ER = 04h).  
(3) The SET MAX ADDRESS (EXT) command has been issued  
(ST = 51h, ER = 04h).  
(4) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
1
x
1
x
1
0
0
1
L
HD No./LBA  
CYL No. [MSB] / LBA  
CYL No. [LSB] / LBA  
SCT No.  
/ LBA[LSB]  
xx  
VV  
xx  
At command completion (Shadow Block Registers contents to be read)  
Status information  
x xx  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
x
x
x
CYL No. [MSB] / LBA  
CYL No. [LSB] / LBA  
SCT No.  
/ LBA[LSB]  
xx  
Error information  
SET MAX SET PASSWORD (Features Field = 01h)  
This command requests a transfer of 1 sector of data from the host, and defines the  
contents of SET MAX password. The password is retained by the device until the  
next power cycle.  
5-114  
C141-E203-01EN  
5.3 Host Commands  
Error reporting conditions  
(1) The device is in Set Max Locked mode or Set Max Freeze Locked mode  
(ST = 51h, ER =04h).  
(3) The SET MAX ADDRESS (EXT) command has been issued  
(ST = 51h, ER = 04h).  
(4) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
x
1
x
1
x
1
0
0
1
xx  
xx  
xx  
xx  
xx  
01  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
xx  
xx  
xx  
xx  
xx  
Error information  
Password information  
Words  
Contents  
0
Reserved  
1 to 16  
Password (32 bytes)  
Reserved  
17 to 255  
C141-E203-01EN  
5-115  
Interface  
SET MAX LOCK (Features Field = 02h)  
The SET MAX LOCK command sets the device into SET_MAX_LOCK state.  
After this command is completed, any other SET MAX commands except SET  
MAX UNLOCK and SET MAX FREEZE LOCK commands are rejected. And the  
device returns command aborted.  
The device remains in the SET MAX LOCK state until a power cycle or the  
acceptance of SET MAX UNLOCK or SET MAX FREEZE LOCK command.  
Error reporting conditions  
(1) The device is in Set Max Locked mode or Set Max Freeze Locked mode  
(ST = 51h, ER = 04h).  
(2) The SET MAX ADDRESS (EXT) command has been issued  
(ST = 51h, ER = 04h).  
(3) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
x
1
x
1
x
1
0
0
1
xx  
xx  
xx  
xx  
xx  
02  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
xx  
xx  
xx  
xx  
xx  
Error information  
5-116  
C141-E203-01EN  
5.3 Host Commands  
SET MAX UNLOCK (Features Field = 03h)  
This command requests a transfer of single sector of data from the host, and  
defines the contents of SET MAX ADDRESS password.  
The password supplied in the sector of data transferred shall be compared with the  
stored password.  
If the password compare fails, the device returns command aborted and decrements  
the Unlock counter, and remains in the Set Max Lock state. On the acceptance of  
the SET MAX LOCK command, the Unlock counter is set to a value of five.  
When this counter reaches zero, then SET MAX UNLOCK command returns  
command aborted until a power cycle.  
If the password compare matches, then the device makes a transition to the Set  
Max Unlocked state and all SET MAX commands will be accepted.  
Error reporting conditions  
(1) The device is in Set Max Locked mode or Set Max Freeze Locked mode  
(ST = 51h, ER = 04h).  
(2) The device is in Set Max Unlocked mode (ST = 51h, ER = 04h).  
(3) The SET MAX ADDRESS (EXT) command has been issued  
(ST = 51h, ER = 04h).  
(4) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
x
1
x
1
x
1
0
0
1
xx  
xx  
xx  
xx  
xx  
03  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
xx  
xx  
xx  
xx  
xx  
Error information  
C141-E203-01EN  
5-117  
Interface  
SET MAX FREEZE LOCK (Features Field = 04h)  
The Set MAX FREEZE LOCK command sets the device to SET_MAX_Frozen  
state.  
After the device made a transition to the Set Max Freeze Lock state, the following  
SET MAX commands are rejected, then the device returns command aborted:  
SET MAX ADDRESS  
SET MAX SET PASSWORD  
SET MAX LOCK  
SET MAX UNLOCK  
Error reporting conditions  
(1) The device is in Set Max Locked mode or Set Max Freeze Locked mode  
(ST = 51h, ER = 04h).  
(2) The SET MAX ADDRESS (EXT) command has been issued  
(ST = 51h, ER = 04h).  
(3) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
CH  
CL  
SN  
SC  
FR  
1
x
1
x
1
x
1
x
1
0
0
1
xx  
xx  
xx  
xx  
xx  
04  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
CH  
CL  
SN  
SC  
ER  
Status information  
xx  
xx  
xx  
xx  
xx  
Error information  
5-118  
C141-E203-01EN  
5.3 Host Commands  
(39) READ SECTOR (S) EXT (X’24’)  
Description  
This command is the extended command of the READ SECTOR (S) command.  
The LBA specification is increased from 28 bits to 48 bits, and the maximum  
number of sectors that can be transferred by a single command is changed from  
100h to 10000h. Other command controls are the same as those of the READ  
SECTOR (S) command.  
Error reporting conditions  
(1) The command was issued in CHS mode (ST = 51h, ER = 04h).  
The other error reporting conditions are the same as those of the READ  
SECTOR(S) command.  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
1
0
1
1
0
x
0
1
0
0
L
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
Sector count (15-8)  
Sector count (7-0)  
FR EXP  
FR  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
Status information  
x
DH  
1
L
1
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
xx  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
xx  
ER  
Error information  
C141-E203-01EN  
5-119  
Interface  
(40) READ DMA EXT (X’25’)  
Description  
This command is the extended command of the READ DMA command. The  
LBA specification is increased from 28 bits to 48 bits, and the maximum  
number of sectors that can be transferred by a single command is changed  
from 100h to 10000h. Other command controls are the same as those of the  
READ DMA command.  
Error reporting conditions  
(1) The command was issued in CHS mode (ST = 51h, ER = 04h).  
The other error reporting conditions are the same as those of the READ DAM  
command.  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
1
0
1
1
0
x
0
1
0
1
L
xx  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
CH EXP  
CH  
CL EXP  
CL  
SN EXP  
SN  
Sector count (15-8)  
SC EXP  
SC  
Sector count (7-0)  
xx  
xx  
FR EXP  
FR  
At command completion (Shadow Block Registers contents to be read)  
ST  
Status information  
x
DH  
1
L
1
xx  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
xx  
CH EXP  
CH  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
xx  
Error information  
ER  
5-120  
C141-E203-01EN  
5.3 Host Commands  
(41) READ NATIVE MAX ADDRESS EXT (X’27’)  
Description  
This command is used to assign the highest address that the device can initially set  
with the SET MAX ADDRESS EXT command. The maximum address is  
displayed in the CH(EXP), CL(EXP), SN(EXP) filed of the device shadow block  
registers.  
Error reporting conditions  
(1) This command is issued with LBA = 0. (ST = 51h, ER= 04h)  
(2) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
1
0
1
1
0
x
0
1
1
1
L
xx  
CH EXP  
CH  
xx  
xx  
xx  
xx  
xx  
xx  
xx  
xx  
xx  
xx  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
FR EXP  
FR  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
Status information  
x
1
L
1
xx  
CH EXP  
CH  
Native max address LBA (47-40)  
Native max address LBA (23-16)  
Native max address LBA (39-32)  
Native max address LBA (15-8)  
Native max address LBA (31-24)  
Native max address LBA (7-0)  
xx  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
xx  
ER  
Error information  
C141-E203-01EN  
5-121  
Interface  
(42) READ MULTIPLE EXT (X’29’)  
Description  
This command is the extended command of the READ MULTIPLE command.  
The LBA specification is increased from 28 bits to 48 bits, and the maximum  
number of sectors that can be transferred by a single command is changed from  
100h to 10000h. Other command controls are the same as those of the READ  
MULTIPLE command.  
Error reporting conditions  
(1) The command was issued in CHS mode (ST = 51h, ER = 04h).  
The other error reporting conditions are the same as those of the READ  
MULTIPLE command.  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
1
0
1
1
0
x
1
0
0
1
L
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
Sector count (15-8)  
Sector count (7-0)  
FR EXP  
FR  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
Status information  
x
1
L
1
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
xx  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
xx  
ER  
Error information  
5-122  
C141-E203-01EN  
5.3 Host Commands  
(43) READ LOG EXT (X'2F')  
The READ LOG EXTEND command reads versatile log data. Versatile log data  
includes the Extended SMART Comprehensive Error log, the Extended SMART  
Self-test log, and the SMART Selective log. The effectiveness of the log types depends  
on customization. All types of versatile log data except Read Log Ext log page 10h are  
customizable. For the protocol concerning data transfers, see Section 5.4.  
The number of the log to be read is specified as the Log address. For log data  
consisting of multiple sectors, a sector offset can be specified as an instruction so  
that data transfer starts from the specified sector. The number of sectors to be  
transferred is specified as the Sector count.  
If an error occurs in the FP Queued protocol, Read Log Ext log page 10h  
containing the error information is transferred. This Read Log Ext log page can be  
read by specifying Sector offset = 00h, Sector count = 01h, and Log address = 10h.  
For the data format of Read Log Ext log page 10h, see Table 5.29.  
If this command is not supported, or if an invalid value is specified for the Log  
address, Sector count, or Sector offset, the Aborted Command error occurs.  
Error reporting conditions  
(1) An error was detected during power-on processing (ST = 51h, ER = 04h).  
(2) An error was detected during wake-up processing (in cases where wake-up  
processing is required before execution of this command)  
(ST = 51h, ER = 04h).  
(3) An error that cannot be corrected with ECC occurred (ST = 51h, ER = 40h).  
(4) The sync byte indicating the beginning of a sector was not found  
(ST = 51h, ER = 01h).  
(5) An invalid log sector address or invalid Sector count (number of sectors to be  
transferred) is specified (ST = 51h, ER = 04h).  
(6) A SATA communication error occurred (ST = 51h, ER = 0Ch).  
C141-E203-01EN  
5-123  
Interface  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
x
0
x
1
x
0
x
1
1
1
1
xx  
CH EXP  
CH  
xx  
xx  
CL EXP  
CL  
Sector offset (15-8)  
Sector offset (7-0)  
xx  
SN EXP  
SN  
Log address  
Sector count (15-8)  
Sector count (7-0)  
xx  
SC EXP  
SC  
FR EXP  
FR  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
Status information  
x
x
x
x
xx  
CH EXP  
CH  
xx  
xx  
CL EXP  
CL  
xx  
xx  
SN EXP  
SN  
xx  
xx  
SC EXP  
SC  
xx  
xx  
ER  
Error information  
5-124  
C141-E203-01EN  
5.3 Host Commands  
Table 5.29 Data format of Read Log Ext log page 10h  
Byte  
Item  
00  
01  
Tag field  
Reserved  
02  
Status field value  
Error field value  
03  
04  
Sector Number field value  
Cylinder Low field value  
Cylinder High field value  
Dev/Head field value  
05  
06  
07  
08  
Sector Number Exp field value  
Cylinder Low Exp field value  
Cylinder High Exp field value  
Reserved  
09  
0A  
0B  
0C  
Sector Count field value  
Sector Count Exp field value  
Reserved  
0D  
0E to FF  
100 to 1FE Vendor Unique  
1FF  
Check sum  
Table 5.30 Tag field information  
Bit  
Description  
If bit 7 is 0, this field has an error tag number.  
Reserved  
0 4  
5
6
7
If this bit is 0, the field consisting of bits 0 to 4 has an  
error tag number.  
C141-E203-01EN  
5-125  
Interface  
(44) WRITE SECTOR (S) EXT (X’34’)  
Description  
This command is the extended command of the WRITE SECTOR (S) command.  
The LBA specification is increased from 28 bits to 48 bits, and the maximum  
number of sectors that can be transferred by a single command is changed from  
100h to 10000h. Other command controls are the same as those of the WRITE  
SECTOR (S) command.  
Error reporting conditions  
(1) The command was issued in CHS mode (ST = 51h, ER = 04h).  
The other error reporting conditions are the same as those of the WRITE  
SECTOR(S) command.  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
1
0
1
1
1
x
0
1
0
0
L
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
Sector count (15-8)  
Sector count (7-0)  
FR EXP  
FR  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
Status information  
x
1
L
1
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
xx  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
xx  
ER  
Error information  
5-126  
C141-E203-01EN  
5.3 Host Commands  
(45) WRITE DMA EXT (X’35’)  
Description  
This command is the extended command of the WRITE DMA command. The  
LBA specification is increased from 28 bits to 48 bits, and the maximum number  
of sectors that can be transferred by a single command is changed from 100h to  
10000h. Other command controls are the same as those of the WRITE DMA  
command.  
Error reporting conditions  
(1) The command was issued in CHS mode (ST = 51h, ER = 04h).  
The other error reporting conditions are the same as those of the WRITE  
DMA command.  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
1
0
1
1
1
x
0
1
0
1
L
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
Sector count (15-8)  
Sector count (7-0)  
FR EXP  
FR  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
Status information  
x
1
L
1
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
xx  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
xx  
ER  
Error information  
C141-E203-01EN  
5-127  
Interface  
(46) SET MAX ADDRESS EXT (X’37’)  
Description  
This command limits specifications so that the highest address that can be accessed  
by users can be specified only in LBA mode.  
The address information specified with this command is set in words 1, 54, 57, 58,  
60, 61, and 100 to 103 of the IDENTIFY DEVICE command response. If read or  
write processing is executed for an address that is outside of the new address  
space, an ID Not Found error occurs.  
If the SC field bit is 0 and the value volatile (VV) bit is 1 when this command is  
executed, the specified values are maintained after a power-on or a COMRESET.  
If the VV bit is 0 when the command is executed, the specified values are  
invalidated during the power-on sequence. If the VV bit is 1, the highest address  
value is defined as the last value specified. (If the VV bit is not set to 1, the  
highest address is the default value.)  
After a power-on reset is performed, a host can issue the SET MAX ADDRESS  
(EXT) command only once if the VV bit is 1. If the SET MAX ADDRESS (EXT)  
command is issued twice or more, an ID Not Found error occurs.  
When the SET MAX ADDRESS EXT command is executed, all SET MAX  
ADDRESS commands are aborted. The address value returns to the origin when  
the SET MAX ADDRESS EXT command is executed using the address value  
returned by the READ NATIVE MAX ADDRESS command.  
Error reporting conditions  
(1) This command is issued twice or more in an operation sequence.  
(ST = 51h, ER = 10h)  
(2) The READ NATIVE MAX ADDRESS EXT command (27h) is not issued  
immediately before this command (ST = 51h, ER = 04h) is issued.  
(3) This command is issued in CHS mode (ST = 51h, ER = 04h)  
(4) The SET MAX ADDRESS command has already been issued.  
(ST = 51h, ER = 04h)  
(5) A SATA communication error occurred (ST = 51h, ER = 14h).  
5-128  
C141-E203-01EN  
5.3 Host Commands  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
1
0
1
1
1
x
0
1
1
1
L
xx  
CH EXP  
CH  
SET MAX LBA (47-40)  
SET MAX LBA (23-16)  
CL EXP  
CL  
SET MAX LBA (39-32)  
SET MAX LBA (15-8)  
SN EXP  
SN  
SET MAX LBA (31-24)  
SET MAX LBA (7-0)  
SC EXP  
SC  
xx  
xx  
VV  
FR EXP  
FR  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
Status information  
x
1
L
1
xx  
CH EXP  
CH  
SET MAX LBA (47-40)  
SET MAX LBA (23-16)  
SET MAX LBA (39-32)  
SET MAX LBA (15-8)  
SET MAX LBA (31-24)  
SET MAX LBA (7-0)  
xx  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
xx  
ER  
Error information  
C141-E203-01EN  
5-129  
Interface  
(47) WRITE MULTIPLE EXT (X’39’)  
Description  
This command is the extended command of the WRITE MULTIPLE command.  
The LBA specification is increased from 28 bits to 48 bits, and the maximum  
number of sectors that can be transferred by a single command is changed from  
100h to 10000h. Other command controls are the same as those of the WRITE  
MULTIPLE command.  
Error reporting conditions  
(1) The command was issued in CHS mode (ST = 51h, ER = 04h).  
The other error reporting conditions are the same as those of the WRITE  
MULTIPLE command.  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
1
0
1
1
1
x
1
0
0
1
L
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
Sector count (15-8)  
Sector count (7-0)  
FR EXP  
FR  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
Status information  
DH  
CH EXP  
CH  
1
L
1
x
xx  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
xx  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
xx  
ER  
Error information  
5-130  
C141-E203-01EN  
5.3 Host Commands  
(48) WRITE LOG EXT (X'3F')  
The WRITE LOG EXTEND command writes versatile log data. Versatile log data  
includes the Extended SMART Comprehensive Error log, the Extended SMART  
Self-test log, and the SMART Selective log; and each log can be partially written  
with this command. The effectiveness of the log types depends on customization.  
For the protocol concerning data transfers, see Section 5.4.  
The number of a log to be written is specified as the Log address. For log data  
consisting of multiple sectors, a sector offset can be specified as an instruction so  
that data transfer starts from the specified sector. The number of sectors to be  
transferred is specified as the Sector count.  
If this command is not supported, or if an invalid value is specified for the Log  
address, Sector count, or Sector offset, the Aborted Command error occurs.  
Error reporting conditions  
(1) An error was detected during power-on processing (ST = 51h, ER = 04h).  
(2) An error was detected during wake-up processing (in cases where wake-up  
processing is required before execution of this command) (ST = 51h, ER = 04h).  
(3) A write fault was detected while the write cache was disabled  
(ST = 71h, ER = 10h).  
(4) While the write cache is enabled, if the status indicating a completed transfer  
(STS = 50h) is returned and a data write operation failed because a write fault  
was detected during the data write operation, Abort will be returned for all  
subsequent ATA commands (ST = 71h, ER = 04h). This state is cleared the  
next time that the device is turned on.  
(5) An invalid log sector address or invalid Sector count (number of sectors to be  
transferred) is specified (ST = 51h, ER = 04h).  
(6) The failure prediction capability is disabled (ST = 51h, ER = 04h).  
(7) A check sum error was detected in the data transferred (ST = 51h, ER = 04h).  
(8) A SATA communication error occurred (ST = 51h, ER = 0Ch).  
C141-E203-01EN  
5-131  
Interface  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
x
0
x
1
x
1
x
1
1
1
1
xx  
CH EXP  
CH  
xx  
xx  
CL EXP  
CL  
Sector offset (15-8)  
Sector offset (7-0)  
xx  
SN EXP  
SN  
Log address  
Sector count (15-8)  
Sector count (7-0)  
xx  
SC EXP  
SC  
FR EXP  
FR  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
Status information  
x
x
x
x
xx  
CH EXP  
CH  
xx  
xx  
CL EXP  
CL  
xx  
xx  
SN EXP  
SN  
xx  
xx  
SC EXP  
SC  
xx  
xx  
ER  
Error information  
5-132  
C141-E203-01EN  
5.3 Host Commands  
(49) READ VERIFY SECTOR (S) EXT (X’42’)  
Description  
This command is the extended command of the READ VERIFY SECTOR (S)  
command. The LBA specification is increased from 28 bits to 48 bits, and the  
maximum number of sectors that can be transferred by a single command is  
changed from 100h to 10000h. Other command controls are the same as those of  
the READ VERIFY SECTOR (S) command.  
Error reporting conditions  
(1) The command was issued in CHS mode (ST = 51h, ER = 04h).  
The other error reporting conditions are the same as those of the READ  
VERIFY SECTOR(S) command.  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
1
1
0
1
0
x
0
0
1
0
L
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
Sector count (15-8)  
Sector count (7-0)  
FR EXP  
FR  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
Status information  
x
1
L
1
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
xx  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
xx  
ER  
Error information  
C141-E203-01EN  
5-133  
Interface  
(50) FLUSH CACHE EXT (X’EA’)  
Description  
This command executes the same operations as the FLUSH CACHE command  
(E7h). However, only LBA=1 can be specified in the command.  
Error reporting conditions  
(1) A SATA communication error occurred (ST = 51h, ER = 14h).  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
1
1
1
1
1
0
x
1
0
1
0
L
xx  
CH EXP  
CH  
xx  
xx  
xx  
xx  
xx  
xx  
xx  
xx  
xx  
xx  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
FR EXP  
FR  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
Status information  
1
L
1
x
xx  
CH EXP  
CH  
xx  
xx  
CL EXP  
CL  
xx  
xx  
SN EXP  
SN  
xx  
xx  
SC EXP  
SC  
xx  
xx  
ER  
Error information  
5-134  
C141-E203-01EN  
5.3 Host Commands  
(51) WRITE MULTIPLE FUA EXT (X'CE')  
Description  
The WRITE MULTIPLE FUA EXT command reports the status of a command  
after user data is written to a medium, regardless of whether the write cache feature  
is enabled or disabled. The other command control and error reporting conditions  
are the same as those of the WRITE MULTIPLE EXT command.  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
1
1
1
0
1
0
x
1
1
1
0
L
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
Sector count (15-8)  
Sector count (7-0)  
FR EXP  
FR  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
Status information  
x
1
L
1
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
xx  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
xx  
ER  
Error information  
C141-E203-01EN  
5-135  
Interface  
(52) WRITE DMA FUA EXT (X'3D')  
Description  
The WRITE DMA FUA EXT command reports the status of a command after user  
data is written to a medium, regardless of whether the write cache feature is  
enabled or disabled. The other command control and error reporting conditions are  
the same as those of the WRITE DMA EXT command.  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
1
0
1
1
1
x
1
1
0
1
L
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
Sector count (15-8)  
Sector count (7-0)  
FR EXP  
FR  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
Status information  
x
1
L
1
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
xx  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
xx  
ER  
Error information  
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C141-E203-01EN  
5.3 Host Commands  
(53) READ FP DMA QUEUED (X'60')  
Description  
For details about control of the READ FP DMA QUEUED command, see Section  
5.4.6.  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
1
1
1
0
x
0
0
0
0
FUA  
L
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
xx  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
TAG  
xx  
FR EXP  
FR  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
Status information  
1
L
1
x
xx  
CH EXP  
CH  
xx  
xx  
CL EXP  
CL  
xx  
xx  
SN EXP  
SN  
xx  
xx  
SC EXP  
SC  
xx  
xx  
ER  
Error information  
FUA: If this bit is 1, the device always reads data from media  
regardless of whether the data requested by the host is in the  
cache.  
TAG: Number of a TAG specified by the host  
C141-E203-01EN  
5-137  
Interface  
(54) WRITE FP DMA QUEUED (X'61')  
Description  
For details about control of the WRITE FP DMA QUEUED command, see Section  
5.4.6.  
At command issuance (Shadow Block Registers setting contents)  
CM  
DH  
0
1
1
1
0
x
0
0
0
1
FUA  
L
xx  
CH EXP  
CH  
LBA (47-40)  
LBA (23-16)  
LBA (39-32)  
LBA (15-8)  
LBA (31-24)  
LBA (7-0)  
xx  
CL EXP  
CL  
SN EXP  
SN  
SC EXP  
SC  
TAG  
xx  
FR EXP  
FR  
xx  
xx  
At command completion (Shadow Block Registers contents to be read)  
ST  
DH  
Status information  
1
L
1
x
xx  
CH EXP  
CH  
xx  
xx  
CL EXP  
CL  
xx  
xx  
SN EXP  
SN  
xx  
xx  
SC EXP  
SC  
xx  
xx  
ER  
Error information  
FUA: If this bit is 1, the device always reports the status after data is  
written to a medium.  
TAG: Number of a TAG specified by the host  
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C141-E203-01EN  
5.3 Host Commands  
5.3.3 Error posting  
Table 5.31 lists the defined errors that are valid for each command.  
Table 5.31 Command code and parameters (1/2)  
Error Field  
Status Field  
COMMAND NAME  
SFRW SFRR UNC IDNF ABRT TK0NF DRDY DWF ERR  
RECALIBRATE  
READ SECTOR(S)  
READ LONG  
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
WRITE SECTOR(S)  
WRITE LONG  
V
V
V
WRITE VERIFY  
READ VERIFY SECTOR(S)  
SEEK  
V
V
V
V
V
EXECUTE DEVICE  
DIAGNOSTIC  
*1  
*1  
*1  
V
*1  
INITIALIZE DEVICE  
PARAMETERS  
V
V
V
V
DOWNLOAD MICROCODE  
STANDBY IMMEDIATE  
IDLE IMMEDIATE  
STANDBY  
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
IDLE  
CHECK POWER MODE  
SLEEP  
SMART  
V
V
V
V
DEVICE CONFIGURATION  
READ MULTIPLE  
WRITE MULTIPLE  
SET MULTIPLE MODE  
READ DMA  
V
V
V
V
V
V
V
V
V
V
WRITE DMA  
V
READ BUFFER  
FLUSH CACHE  
V
V
V
WRITE BUFFER  
IDENTIFY DEVICE  
IDENTIFY DEVICE DMA  
SET FEATURES  
V
V
V
V
SECURITY SET PASSWORD  
C141-E203-01EN  
5-139  
Interface  
Table 5.31 Command code and parameters (2/2)  
Error Field  
Status Field  
COMMAND NAME  
SFRW SFRR UNC IDNF ABRT TK0NF DRDY DWF ERR  
SECURITY UNLOCK  
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
SECURITY ERASE PREPARE  
SECURITY ERASE UNIT  
SECURITY FREEZE LOCK  
SECURITY DISABLE  
PASSWORD  
V
V
V
V
V
V
V
V
V
READ NATIVE MAX  
ADDRESS  
V
V
SET MAX  
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
READ SECTOR(S) EXT  
READ DMA EXT  
V
V
V
V
READ NATIVE MAX  
ADDRESS EXT  
V
V
V
V
V
READ MULTIPLE EXT  
WRITE LOG EXT  
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
WRITE SECTOR(S) EXT  
WRITE DMA EXT  
SET MAX ADDRESS EXT  
WRITE MULTIPLE EXT  
READ LOG EXT  
V
V
V
V
READ VERIFY SECTOR(S)  
EXT  
V
V
V
V
V
FLUSH CACHE EXT  
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
WRITE MULTIPLE FUA EXT  
WRITE DMA FUA EXT  
READ FP DMA QUEUED  
WRITE FP DMA QUEUED  
V
V
V
V: Valid on this command  
*1: See the command descriptions.  
*
For a description of each bit in the Error field and Status field,  
see Section 5.2.4.  
5-140  
C141-E203-01EN  
5.4 Command Protocol  
5.4 Command Protocol  
The host should confirm that the BSY bit of the Shadow Block Status register of  
the device is 0 prior to issue a command. If BSY bit is 1, the host should wait for  
issuing a command until BSY bit is cleared to 0.  
Commands can be executed only when the DRDY bit of the Status register is 1.  
However, the following commands can be executed even if DRDY bit is 0.  
EXECUTE DEVICE DIAGNOSTIC  
INITIALIZE DEVICE PARAMETERS  
5.4.1 Non-data command protocol  
Execution of the following commands does not involve data transfer between the  
host and the device.  
RECALIBRATE  
SEEK  
READ VERIFY SECTOR(S) (EXT)  
EXECUTE DEVICE DIAGNOSTIC  
INITIALIZE DEVICE PARAMETERS  
SET FEATURES  
SET MULTIPLE MODE  
SET MAX ADDRESS (EXT)  
READ NATIVE MAX ADDRESS (EXT)  
IDLE  
IDLE IMMEDIATE  
STANDBY  
STANDBY IMMEDIATE  
CHECK POWER MODE  
SMART DISABLE OPERATION  
SMART ENABLE/DISABLE AUTOSAVE  
SMART ENABLE OPERATION  
C141-E203-01EN  
5-141  
Interface  
SMART EXECUTE OFFLINE IMMEDIATE  
SMART RETURN STATUS  
SECURITY ERASE PREPARE  
SECURITY FREEZE LOCK  
FLUSH CACHE (EXT)  
SLEEP  
DEVICE CONFIGRATION RESTORE (FREEZE LOCK)  
The following is the protocol for command execution without data transfer:  
1) The device receives a non-data command with the Register HD FIS.  
2) The device executes the received command.  
3) Command execution is completed.  
4) The device reports the completion of command execution by sending to the  
host the Register DH FIS with 1 set in the I bit.  
RegHD  
Host  
Device  
RegDH  
Figure 5.10 Non-data command protocol  
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C141-E203-01EN  
5.4 Command Protocol  
5.4.2 PIO data-in command protocol  
Execution of the following commands involves data transfers from the device to  
the host system:  
IDENTIFY DEVICE  
READ SECTOR(S) (EXT)  
READ MULTI (EXT)  
READ LONG  
READ BUFFER  
SMART READ DATA  
SMATR READ LOG SECTOR  
READ LOG EXT  
DEVICE CONFIGRATION IDENTIFY  
Data of one or more sectors is transferred from the device to the host. With the  
READ LONG command, data of 516 bytes is transferred.  
An outline of this protocol is as follows:  
1) The device receives a PIO data-in command with the Register HD FIS.  
2) If an error remaining in the device prevents command execution, the device  
sends the Register DH FIS with 1 set in the I bit.  
3) When the device is ready to send data, it sets 0 in the BSY bit, 1 in the DRQ  
bit, and 1 in the I bit of the Status field of the PIO Setup FIS, then sends this  
FIS to the host. At this time, if the requested data is read from the last sector  
to be processed, the device sets 0 in both the BSY bit and DRQ bit of the  
E_Status field. Otherwise, the device sets 1 in the BSY bit and 0 in the DRQ  
bit of the E_Status field.  
4) The device sends the DATA FIS to the host.  
5) When all data has been transferred, command execution is completed. If any  
data remains to be transferred, this protocol is repeated starting from step 3).  
(The maximum data size is 8 KB.)  
C141-E203-01EN  
5-143  
Interface  
RegHD  
PIOSU  
DATA  
Host  
Device  
Figure 5.11 PIO data-in command protocol  
5.4.3 PIO data-out command protocol  
Execution of the following commands involves data transfers from the host system  
to the device:  
WRITE SECTOR(S) (EXT)  
WRITE MULTI (EXT) (FUA EXT)  
WRITE LONG  
WRITE BUFFER  
WRITE VERIFY  
SMART WRITE LOG SECTOR  
SECURITY DISABLE PASSWORD  
SECURITY ERASE UNIT  
SECURITY SET PASSWORD  
SECURITY UNLOCK  
DOWNLOAD MICROCODE  
WRITE LOG EXT  
DEVICE CONFIGRATION SET  
Data of one or more sectors is transferred from the host to the device. With the  
WRITE LONG command, data of 516 bytes is transferred.  
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C141-E203-01EN  
5.4 Command Protocol  
An outline of this protocol is as follows:  
1) The device receives a PIO data-out command with the Register HD FIS.  
2) If an error remaining in the device prevents command execution, the device  
sends the Register DH FIS with 1 set in the I bit.  
3) When the device is ready to receive data, it sets 0 in the BSY bit and 1 in the  
DRQ bit of the Status field of the PIO Setup FIS. At this time, the device sets  
0 in the I bit of the Status field of the PIO Setup FIS for a data transfer to the  
first sector, while it sets 1 in the I bit for a data transfer to any sector other  
than the first sector. Then, it sends this FIS to the host. In the E_Status field,  
the device sets 1 in the BSY bit and 0 in the DRQ bit.  
4) The device receives the DATA FIS from the host.  
5) When all data has been transferred, the device sends the Register DH FIS  
(with 1 set in the I bit) to complete execution of the command. If the device  
has an error, it reports the error. If any data remains to be received by the  
device, this protocol is repeated starting from step 3). (The maximum data  
size is 8 KB.)  
RegHD  
PIOSU  
Host  
Device  
DATA  
RegDH  
Figure 5.12 PIO data-out command protocol  
C141-E203-01EN  
5-145  
Interface  
5.4.4 DMA data-in command protocol  
DMA data-in commands include the following commands:  
READ DMA (EXT)  
IDENTFY DMA  
The DMA mechanism transfers data of more than one block from the device to the  
host. The completion of a command is reported by an interruption.  
An outline of this protocol is as follows:  
1) The device receives a DMA data-in command with the Register HD FIS.  
2) If an error remaining in the device prevents command execution, the device  
sends the Register DH FIS with 1 set in the I bit.  
3) When the device is ready to send data, it sends the Data FIS to the host.  
4) When all data has been transferred, the device sends the Register DH FIS  
(with 1 set in the I bit) to complete execution of the command. If any data  
remains to be sent by the device, this protocol is repeated starting from step 3).  
(The maximum data size is 8 KB.)  
RegHD  
Host  
Device  
DATA  
RegDH  
Figure 5.13 DMA data-in command protocol  
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C141-E203-01EN  
5.4 Command Protocol  
5.4.5 DMA data-out command protocol  
The DMA data-out command is the following command:  
WRITE DMA (EXT) (FUA EXT)  
The DMA mechanism transfers data of more than one block from the host to the  
device. The completion of the command is reported by an interruption.  
An outline of this protocol is as follows:  
1) The device receives the DMA data-out command with the Register HD FIS.  
2) If an error remaining in the device prevents command execution, the device  
sends the Register DH FIS with 1 set in the I bit.  
3) When the device is ready to receive data, it sends the DMA Activate FIS to the  
host.  
4) The device receives the Data FIS from the host.  
5) When all data has been transferred, the device sends the Register DH FIS  
(with 1 set in the I bit) to complete execution of the command. If any data  
remains to be received by the device, this protocol is repeated starting from  
step 3). (The maximum data size is 8 KB.)  
RegHD  
DMACT  
Host  
Device  
DATA  
RegDH  
Figure 5.14 DMA data-out command protocol  
C141-E203-01EN  
5-147  
Interface  
5.4.6 Native Command Queuing protocol  
Native Queued commands include the following commands:  
READ FP DMA QUEUED  
WRITE FP DMA QUEUED  
An outline of the command queuing protocol is as follows:  
1) After the device receives a Native Queued command, if the command is  
executable, the device sends to the host the Register DH FIS with the settings  
of I bit = 0, BSY bit = 0, and DRQ bit = 0, and it places the command in the  
command queue. Otherwise, the device sends the Register DH FIS to the host  
to report an error.  
2) If the device receives a command that is not a Native Queued command  
during command queuing, the device sends to the host the Register DH FIS  
with the settings of ERR bit = 1, I bit = 1, BSY bit = 0, DRQ bit = 0, and Error  
register = 0x04 to report an abort.  
3) When the device is ready to send data for the data transfer of the READ FP  
DMA QUEUED command, it sends to the host the DMA Setup FIS with the  
settings of TAG = #, D bit = 1, I bit = 0, and A bit = 0, and it then sends the  
Data FIS to the host. (The Data FIS is transferred in units of up to 8 KB).  
4) When the read data transfer requested by the command is completed and the  
command is completed normally, the bit in the SActive field in the Set Device  
Bits FIS corresponding to the tag number of the completed command is set by  
the device, and the device sets 0 in the Err bit and 0 in the Error register in the  
Set Device Bits FIS. Then, it sends the Set Device Bits FIS to the host.  
5) For the data transfer of the WRITE FP DMA QUEUED command, if the  
DMA Setup Auto Activate function is disabled, the device sends to the host  
the DMA Setup FIS with the settings of TAG = #, D bit = 0, A bit = 0, and I  
bit = 0, and it sends the DMA Activate FIS before it receives the Data FIS  
from the host. (The Data FIS is transferred in units of up to 8 KB, with the  
actual length of the Data FIS varying depending on the host).  
6) If the DMA Setup AutoActivate function is enabled, the device sends to the  
host the DMA Setup FIS with the settings of TAG = #, D bit = 0, A bit = 1,  
and I bit = 0, and it then receives the Data FIS from the host (in units of 8 KB,  
16 sectors).  
7) When the write data transfer requested by the command is completed and the  
command is completed normally, the bit in the SActive field in the Set Device  
Bits FIS corresponding to the tag number of the completed command is set by  
the device, and the device sets 0 in the Err bit and 0 in the Error register in the  
Set Device Bits FIS. Then, it sends the Set Device Bits FIS to the host. (The  
DMA Setup AutoActivate function can be enabled and disabled by the SET  
FEATURES command. The function is disabled by default.)  
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5.4 Command Protocol  
8) If an uncorrectable error occurs during command queuing, the device sends to  
the host the Set Device Bits FIS with the settings of ERR bit = 1, ERRReg =  
ATAErrCode, I bit = 1, and SActive = 0 to report an error.  
9) After reporting the error, the device accepts only the READ LOG EXT  
command with page 10h specified and the reset requests (SoftReset and  
COMRESET). The device reports abort for other commands.  
10) If the device receives the READ LOG EXT command with page 10h  
specified, queued commands are aborted. Then, after the device sends to the  
host the Set Device Bits FIS (ERR = 0, ERRReg = 0, I = 0, and SActive  
=0xFFFFFFFF), it sends to the host the log data for the READ LOG EXT  
command with page 10h specified and reports the status of this command.  
Next, the command queuing function is enabled, and commands can be  
accepted again.  
RegHD  
Host  
Device  
RegDH  
DMAS  
DATA  
SETDB  
Figure 5.15 READ FP DMA QUEUED command protocol  
C141-E203-01EN  
5-149  
Interface  
RegHD  
RegDH  
DMAS  
Host  
Device  
DMAC  
DATA  
SETDB  
Figure 5.16 WRITE FP DMA QUEUED command protocol  
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C141-E203-01EN  
5.5 Power-on and COMRESET  
5.5 Power-on and COMRESET  
Figure 5.17 shows the power-on sequence, and Figure 5.18 shows the COMRESET  
sequence.  
Immediately after power-on or COMRESET, the host sets 0x7Fh in the Status field  
of the Shadow Block Register and 0xFFh in other fields. After the power-on  
sequence shown below and after communication with the SATA interface is  
established, the host sets 0xFFh in the Status field of the Shadow Block Register.  
The device completes the power-on sequence within 10 ms so that communication  
with the SATA interface can be established.  
Host  
power  
on  
Host  
releases  
ComReset  
Host  
ComWake  
Host  
Align  
Host  
power  
off  
Host  
releases  
ComWake  
Host  
calibrate  
Host  
ComReset  
Host  
data  
Host TX  
(Device  
RX)  
Device  
TX (Host  
RX)  
Device  
Calibrate  
Device  
ComInit  
Device  
Align  
Device  
power  
off  
Device  
data  
Device  
releases  
ComInit  
Device  
ComWake  
Device  
power  
on  
Figure 5.17 Power-on sequence  
C141-E203-01EN  
5-151  
Interface  
Host  
Host  
Host/device releases  
Host  
calibrate  
releases  
ComWake  
Host  
Align  
on  
ComReset  
Host  
ComReset  
Host  
ComWake  
Host  
data  
Host TX  
(Device RX)  
Device TX  
(Host RX)  
Device  
ComInit  
Device  
ComWake  
Device  
data  
Device  
releases  
ComInit  
Device  
Calibrate  
Device  
Align  
Figure 5.18 COMRESET sequence  
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CHAPTER 6 Operations  
6.1  
6.2  
6.3  
6.4  
6.5  
Reset and Diagnosis  
Power Save  
Interface Power Save  
Read-ahead Cache  
Write Cache  
This chapter explains each of the above operations.  
C141-E203-01EN  
6-1  
Operations  
6.1 Reset and Diagnosis  
This section explains the device responses to power-on and an accepted reset.  
6.1.1 Response to power-on  
Immediately after power is turned on, the host sets 0x7Fh in the Status field of the  
Shadow Block and 0xFFh in other fields. After communication with the SATA  
interface is established, the host sets 0xFFh in the Status field of the Shadow  
Block. The device establishes communication with the SATA interface (PHY  
Ready) within 10 ms. The device sends the FIS (STS = 50h) to notify the host  
that the device is ready.  
Note: Figure 6.1 assumes that power is turned on after the power-off state  
continued for more than five seconds.  
Figure 6.1 Response to power-on (when the host is powered  
on earlier than the device)  
6-2  
C141-E203-01EN  
6.1 Reset and Diagnosis  
Figure 6.2 Response to power-on (when the device is powered on  
earlier than the host)  
C141-E203-01EN  
6-3  
Operations  
6.1.2 Response to COMRESET  
The response to COMRESET is almost the same as the response when power is  
turned on and a power-on reset is then cancelled. The device establishes  
communication with the SATA interface (PHY Ready) and sends the Register DH  
FIS (STS = 50h) to notify the host that the device is ready. Then, the  
COMRESET sequence is completed.  
Figure 6.3 Response to COMRESET  
6-4  
C141-E203-01EN  
6.1 Reset and Diagnosis  
6.1.3 Response to a software reset  
When a software reset is accepted, the device performs a self-diagnosis, and it  
sends the Register DH FIS (STS = 50h) to notify the host that the device is ready.  
Then, the software reset sequence is completed.  
Figure 6.4 Response to a software reset  
C141-E203-01EN  
6-5  
Operations  
6.2 Power Save  
The host can change the power consumption state of the device by issuing a  
power command to the device.  
6.2.1 Power save mode  
There are five types of power consumption state of the device including active  
mode where all circuits are active.  
Active mode  
Active idle mode  
Low power idle mode  
Standby mode  
Sleep mode  
The device enters the active idle mode by itself. The device also enters the idle  
mode in the same way after power-on sequence is completed. The subsequent  
mode transition changes depending on the APM setting.  
(1) Active mode  
In this mode, all the electric circuit in the device are active or the device is under  
seek, read or write operation.  
A device enters the active mode under the following conditions:  
The media access system is received.  
(2) Active idle mode  
In this mode, circuits on the device is set to power save mode.  
The device enters the Active idle mode under the following conditions:  
After completion of the command execution other than SLEEP and STANDBY  
commands.  
(3) Low power idle mode  
Sets circuits on the device to the power save mode. The heads are disabled in the  
safe state.  
The device enters the low power mode under the following conditions:  
After certain amount of time has elapsed in the active idle state (APM Mode  
0, Mode 1 and Mode 2)  
Upon completion of the power-on sequence  
6-6  
C141-E203-01EN  
6.2 Power Save  
Upon receipt of a COMRESET  
Upon receipt of Idle/Idle Intermediate  
(4) Standby mode  
In this mode, the spindle motor has stopped from the low power idle state.  
The device can receive commands through the interface. However if a command  
with disk access is issued, response time to the command under the standby mode  
takes longer than the active, active idle, or low power idle mode because the  
access to the disk medium cannot be made immediately.  
The drive enters the standby mode under the following conditions:  
A STANDBY or STANDBY IMMEDIATE command is issued.  
A certain amount of time has elapsed in the low power idle state.  
(APM Mode 2)  
The time specified by the STANDBY or IDLE command has elapsed after  
completion of the command.  
A reset is issued in the sleep mode.  
When one of following commands is issued, the command is executed normally  
and the device is still stayed in the standby mode.  
Reset (hardware or software)  
STANDBY command  
STANDBY IMMEDIATE command  
INITIALIZE DEVICE PARAMETERS command  
CHECK POWER MODE command  
(5) Sleep mode  
The power consumption of the drive is minimal in this mode. The drive enters  
only the standby mode from the sleep mode. The only method to return from the  
standby mode is to execute a software or COMRESET.  
The drive enters the sleep mode under the following condition:  
A SLEEP command is issued.  
In this mode, the device does not accept the command. (It is ignored.)  
C141-E203-01EN  
6-7  
Operations  
6.2.2 Power commands  
The following commands are available as power commands.  
IDLE  
IDLE IMMEDIATE  
STANDBY  
STANDBY IMMEDIATE  
SLEEP  
CHECK POWER MODE  
SET FEATURES (APM setting)  
6-8  
C141-E203-01EN  
6.3 Interface Power Save  
6.3 Interface Power Save  
The host system can change the power consumption status of the interface by  
issuing the PARTIAL or SLUMBER request to the device.  
6.3.1 Power save mode of the interface  
The interface power consumption states of this device can be separated into the  
following three modes, including the Active mode where the device is in the  
active state:  
Active mode  
Partial mode (shallow Interface Power Down)  
Slumber mode (deep Interface Power Down)  
*
The relationship of amount of power consumption in each mode is: Active  
mode > Partial mode > Slumber mode. The following table specifies a rule  
about the period in which the device must switch to Active mode from the  
Interface Power Down state:  
Period in which the device must switch to Active mode  
Partial mode  
Maximum 10 µs  
Slumber mode  
Maximum 10 ms  
(1) Active mode  
The interface is in the Active state and commands can be accepted.  
(2) Partial mode  
In this mode, (shallow) Power Save mode is set for the interface circuit.  
The device switches to Partial mode when the following occurs:  
The device receives the PMREQ_P signal from the host and responds with  
the PMACK signal  
The device sends the PMREQ_P signal and the host responds with PMACK  
signal.  
The device cannot switch to Partial mode if the following condition is satisfied:  
The device responds with the PMNAK signal because it is not waiting for  
commands.  
The device returns to Active mode from Partial mode when the following  
condition is satisfied:  
The device receives the COMRESET or ComWake signal from the host.  
C141-E203-01EN  
6-9  
Operations  
(3) Slumber mode  
In this mode, the (deep) Power Save mode is set for the interface circuit.  
The device switches to Slumber mode when the following occurs:  
The device receives the PMREQ_P signal from the host and responds with  
the PMACK signal  
The device sends the PMREQ_S signal and the host responds with PMACK  
signal.  
The device cannot switch to Slumber mode if the following condition is satisfied:  
The device responds with the PMNAK signal because it is not waiting for  
commands.  
The device returns to Active mode from Slumber mode when the following  
condition is satisfied:  
The device receives the COMRESET or ComWake signal from the host.  
6-10  
C141-E203-01EN  
6.4 Read-ahead Cache  
6.4 Read-ahead Cache  
Read-ahead Cache is the function for automatically reading data blocks upon  
completion of the read command in order to read data from disk media and save  
data block on a data buffer.  
If a subsequent command requests reading of the read-ahead data, data on the data  
buffer can be transferred without accessing the disk media. As the result, faster  
data access becomes possible for the host.  
6.4.1 Data buffer structure  
This device contains a data buffer. This buffer is divided into two areas: one area  
is used for MPU work, and the other is used as a read cache for another command.  
(See Figure 6.5)  
8MB buffer  
8,192 KB (8,388,608 bytes)  
For MPU work  
For R/W command  
7,856 KB  
336 KB  
(344,064 bytes)  
(8,044,544 bytes)  
Figure 6.5 Data buffer structure  
The read-ahead operation is done by the following commands.  
READ SECTOR (s) (EXT)  
READ MULTIPLE (EXT)  
READ DMA (EXT)  
READ FP DMA QUEUED  
C141-E203-01EN  
6-11  
Operations  
6.4.2 Caching operation  
The caching operation is performed only when the commands listed below are  
received. If any of the following data are stored on the data buffer, the data is  
sent to the host system.  
All of the sector data that this command processes.  
A part of the sector data including the start sector, that this command  
processes.  
If part of the data to be processed is stored on the data buffer, the remaining data  
is read from disk media and sent to the host system.  
(1) Commands that are targets of caching  
The commands that are targets of caching are as follows:  
READ SECTOR (S) (EXT)  
READ MULTIPLE (EXT)  
READ DMA (EXT)  
READ FP DMA QUEUED  
However, if the caching function is prohibited by the SET FEATURES command,  
the caching operation is not performed.  
(2) Data that is a target of caching  
The data that is a target of caching are as follows:  
1) Read-ahead data that is read from disk media and saved to the data buffer  
upon completion of execution of a command that is a target of caching.  
2) Pre-read data that is read from disk media and saved to the data buffer before  
execution of a command that is a target of caching.  
3) Data required by a command that is a target of caching and has been sent to  
the host system one. If the sector data requested by the host has not been  
completely stored in the read cache portion of the buffer, this data does not  
become a target of caching. Also, If sequential hits occur continuously, the  
caching-target data required by the host becomes invalid because that data is  
overwrited by new data.  
6-12  
C141-E203-01EN  
6.4 Read-ahead Cache  
(3) Invalidating caching-target data  
Data that is a target of caching on the data buffer is invalidated under the  
following conditions:  
1)-1Any command other than the following commands is issued. (All caching-  
target data is invalidated.)  
READ LONG  
READ BUFFER  
WRITE LONG  
WRITE BUFFER  
RECALIBRATE  
FORMAT TRACK  
SET FEATURES  
SECURITY ERASE UNIT  
DEVICE CONFIGURATION  
DOWNLOAD MICROCODE  
UNSUPPORT COMMAND (INVALID COMMAND)  
1)-2Commands that partially invalidate caching data  
READ DMA/READ MULTIPLE/READ SECTOR(S)  
READ DMA EXT/READ MULTIPLE EXT/READ SECTOR(S) EXT  
READ FP DMA QUEUED  
WRITE DMA/WRITE MULTIPLE/WRITE SECTOR(S)  
WRITE DMA EXT/WRITE MULTIPLE EXT/WRITE SECTOR(S) EXT  
WRITE DMA FUA EXT/WRITE MULTIPLE FUA EXT  
WRITE FP DMA QUEUED  
SMART  
2) A COMRESET is issued or the power is turned off.  
3) When HOST CRC ERROR has occurred.  
C141-E203-01EN  
6-13  
Operations  
6.4.3 Using the read segment buffer  
Methods of using the read segment buffer are explained for following situations.  
6.4.3.1 Miss-hit  
In this situations, the top block of read requested data is not stored at all in the  
data buffer. As a result, all of the read requested data is read from disk media.  
1) HAP (host address pointer) and DAP (disk address pointer) are defined in the  
head of the segment allocated from Buffer. (If pre-read is executed, HAP is  
set at the requested data reading position.)  
AP (host address pointer)  
Read segment  
DAP (disk address pointer)  
2) During reading of read requested data, the request data that has already been  
read is sent to the host system.  
Read requested data is  
stored until this point  
HAP  
Read requested data  
Free space  
DAP  
3) When reading of read requested data is completed and transfer of the read  
requested data to the host system is completed, reading of the disk continues  
until a certain amount of data is stored.  
HAP (stop)  
Read requested data  
Read-ahead data  
DAP  
4) The following cache valid data is for the read command that is executed next:  
Cache valid data  
LAST LBA START LBA  
6-14  
C141-E203-01EN  
6.4 Read-ahead Cache  
6.4.3.2 Sequential hit  
When the read command that is targeted at a sequential address is received after  
execution of the read commands is completed, the read command transmits the  
Read requested data to the host system continuing read-ahead without newly  
allocating the buffer for read.  
1) When the sequential read command is received, HAP is set in the sequential  
address of the last read command, and DAP is set at a present read position as  
it is.  
HAP (host address pointer)  
Read requested data  
Read-ahead data  
Cache valid data  
Free space  
DAP (disk address pointer)  
2) During reading of read requested data, the request data that has already been  
read is sent to the host system.  
HAP (host address pointer)  
Cache valid data  
Free space  
Read requested data  
DAP (disk address pointer)  
3) When reading of read requested data is completed and transfer of the read  
requested data to the host system is completed, the read-ahead operation  
continues until a certain amount of data is stored.  
HAP (host address pointer)  
Read-ahead Free  
Cache valid data  
Read requested data  
data  
space  
DAP (disk address pointer)  
4) The following cache valid data is for the read command that is executed next:  
Cache valid data  
LAST LBA START LBA  
6.4.3.3 Full hit  
In this situation, all read requested data is stored in the data buffer. Transfer of  
the read requested data is started from the location where hit data is stored. For  
C141-E203-01EN  
6-15  
Operations  
data that is a target of caching and remains before a full hit, the data is retained  
when execution of the command is completed. This is done so that a new read-  
ahead operation is not performed. If the full hit command is received during the  
read-ahead operation, a transfer of the read requested data starts while the read-  
ahead operation is in progress.  
1) An example is the state shown below where the previous read command is  
executing sequential reading. First, HAP is set at the location where hit data  
is stored.  
HAP end location of the previous read command  
HAP (It is reset to the hit data location for transfers.)  
HAP  
Cache data  
Full hit data  
Cache data  
DAP  
DAP end location of the previous read command  
2) The read requested data is transferred, and a new read-ahead operation is not  
performed.  
HAP  
(stop)  
Cache data  
Full hit data  
Cache data  
6-16  
C141-E203-01EN  
6.4 Read-ahead Cache  
6.4.3.4 Partial hit  
In this situation, a part of read requested data including the top sector is stored in  
the data buffer. A transfer of the read requested data starts from the address where  
the data that is hit is stored until the top sector of the read requested data.  
Remaining part of insufficient data is read then.  
An example is a case where a partial hit occurs in cache data, as shown below.  
Cache valid data  
TART LBA  
LAST LBA  
1) HAP is set at the address where partial hit data is stored, and Transfer is  
started.  
HAP (host address pointer)  
Cache valid data  
Partial hit data  
2) DAP and HAP are set at the head of Buffer newly allocated, and insufficient  
data is read.  
HAP (host address pointer)  
Read segment  
DAP (disk address pointer)  
3) When reading the read requested data ends and the transmission of the read  
requested data to the host system ends, the read-ahead operation continues  
until a certain amount of data is stored.  
The method of storing the read-ahead data at Partial hit is the same as the  
Miss hit.  
Cache valid data  
LAST LBA START LBA  
C141-E203-01EN  
6-17  
Operations  
6.5 Write Cache  
Write Cache is the function for reducing the command processing time by  
separating command control to disk media from write control to disk media.  
When Write Cache is permitted, the write command can be keep receiving as long  
as the space available for data transfers remains free on the data buffer. Because  
of this function, command processing appears to be completed swiftly from the  
viewpoint of the host. It improves system throughput.  
6.5.1 Cache operation  
(1) Command that are targets of caching  
The Commands that are targets of caching are as follows:  
WRITE SECTOR(S) (EXT)  
WRITE MULTIPLE (EXT) (FUA)  
WRITE DMA (EXT) (FUA)  
WRITE FP DMA QUEUED  
However, the caching operation is not performed when the caching function is  
prohibited by the SET FEATURES command.  
(2) Invalidation of cached data  
If an error occurs during writing onto media, write processing is repeated up to as  
many times as specified for retry processing. If retry fails for a sector because the  
retry limit is reached, automatic alternate sector processing is executed for the  
sector. If the automatic alternate sector processing fails, the data in the sector for  
which automatic alternate sector processing failed is invalidated without being  
guaranteed.  
Moreover, when the command (clause 6.4.2(3)) is accepted and HOST CRC Error  
is generated, the cashing data is invalidated.  
<Exception>  
If a COMRESET, a software reset or command is received while a transfer of  
one sector of data is in progress, data is not written in the sector of the media  
where the interruption occurred, and sectors accepted before interruption  
occurred is written in the medium.  
6-18  
C141-E203-01EN  
6.5 Write Cache  
(3) Status report in the event of an error  
The status report concerning an error occurring during writing onto media is  
created when the next command is issued. Where the command reporting the  
error status is not executed, only the error status is reported. Only the status of an  
error that occurs during write processing is reported.  
<Exceptions>  
The error status is not reported in the following case:  
The COMRESET or software reset is received after an error has occurred  
during writing to media.  
The COMRESET or software reset processing is performed as usual.  
The error status that has occurred during writing to media is not reported.  
(4) Enabling and disabling  
Enabling and disabling of the Write Cache function can be set only with the SET  
FEATURES command. The setting does not changed even when the error status  
is reported.  
The initial setting is stored in the system area of media. System area information  
is loaded whenever the power is turned on.  
(5) COMRESET and software reset response  
When a COMRESET or software reset is received while cached data is stored on  
the data buffer, data of the data buffer is written on the media, and reset  
processing is then performed. This is true for both a hard reset and soft reset.  
(6) Cashing function when power supply is turned on  
The cashing function is invalid until Calibration is done after the power supply is  
turned on.(about 10 sec) It is effective in Default after that as long as the cashing  
function is not invalidly set by the SET FEATURES command.  
IMPORTANT  
If Write Cache is enabled, there is a possibility that data transferred  
from the host with the Write Cache enable command is not completely  
written on disk media before the normal end interrupt is issued.  
If an unrecoverable error occurs while multiple commands that are  
targets of write caching are received, the host has difficulty  
determining which command caused the error. (An error report is  
not issued to the host if automatic alternating processing for the  
error is performed normally.) Therefore, the host cannot execute a  
retry for the unrecoverable error while Write Cache is enabled. Be  
very careful on this point when using this function.  
If a write error occurs, an abort response is sent to all subsequent  
commands.  
C141-E203-01EN  
6-19  
This page is intentionally left blank.  
Glossary  
Actuator  
AT bus  
Head positioning assembly. The actuator consists of a voice coil motor and head  
arm. If positions the read-write (R-W) head.  
A bus between the host CPU and adapter board  
ATA (AT Attachment) standard  
The ATA standard is for a PC AT interface regulated to establish compatibility  
between products manufactured by different vendors. Interfaces based on this  
standard are called ATA interfaces.  
BIOS standard for drives  
The BIOS standard collectively refers to the parameters defined by the host,  
which, for example, include the number of cylinders, the number of heads, and  
the number of sectors per track in the drive. The physical specifications of the  
drive do not always correspond to these parameters.  
The BIOS of a PC AT cannot make full use of the physical specifications of these  
drivers. To make the best use of these drives, a BIOS that can handle the standard  
parameters of these drives is required.  
Command  
Data block  
DE  
Commands are instructions to input data to and output data from a drive.  
Commands are written in command registers.  
A data block is the unit used to transfer data. A data block normally indicates a  
single sector.  
Disk enclosure. The DE includes the disks, built-in spindle motor, actuator,  
heads, and air filter. The DE is sealed to protect these components from dust.  
MTBF  
Mean time between failures. The MTBF is calculated by dividing the total  
operation time (total power-on time) by the number of failures in the disk drive  
during operation.  
C141-E203-01EN  
GL-1  
Glossary  
MTTR  
Mean time to repair. The MTTR is the average time required for a service person  
to diagnose and repair a faulty drive.  
PIO (Programmed input-output)  
Mode to transfer data under control of the host CPU  
Positioning  
Sum of the seek time and mean rotational delay  
Power save mode  
The power save modes are idle mode, standby mode, and sleep mode.  
In idle mode, the drive is neither reading, writing, nor seeking data. In standby  
mode, the spindle motor is stopped and circuits other than the interface control  
circuit are sleeping. The drive enters sleep mode when the host issues the SLEEP  
command.  
Reserved  
Reserved bits, bytes, and fields are set to zero and unusable because they are  
reserved for future standards.  
Rotational delay  
Time delay due to disk rotation. The mean delay is the time required for half a  
disk rotation. The mean delay is the average time required for a head to reach a  
sector after the head is positioned on a track.  
Seek time  
Status  
The seek time is the time required for a head to move from the current track to  
another track. The seek time does not include the mean rotational delay.  
The status is a piece of one-byte information posted from the drive to the host  
when command execution is ended. The status indicates the command  
termination state.  
VCM  
Voice coil motor. The voice coil motor is excited by one or more magnets. In  
this drive, the VCM is used to position the heads accurately and quickly.  
GL-2  
C141-E203-01EN  
Acronyms and Abbreviations  
HDD  
Hard disk drive  
A
I
ABRT Aborted command  
AIC  
AMNF Address mark not found  
ATA AT attachment  
Automatic idle control  
IDNF  
ID not found  
IRQ14 Interrupt request 14  
L
AWG American wire gage  
LED  
MB  
Light emitting diode  
B
M
BBK  
BIOS  
Bad block detected  
Basic input-output system  
Mega-byte  
MB/S Mega-byte per seconds  
C
MPU  
Micro processor unit  
CORR Corrected data  
P
CH  
Cylinder high register  
CL  
Cylinder low register  
Command register  
Current sense register  
Current start/stop  
PCA  
PIO  
Printed circuit assembly  
Programmed input-output  
CM  
CSR  
CSS  
CY  
R
Cylinder register  
RLL  
Run-length-limited  
D
S
dBA  
DE  
DH  
dB A-scale weighting  
Disk enclosure  
Device/head register  
SA  
SC  
SG  
SN  
ST  
System area  
Sector count register  
Signal ground  
Sector number register  
Status register  
DRDY Drive ready  
DRQ  
DSC  
DWF  
Ddata request bit  
Drive seek complete  
Drive write fault  
T
E
TPI  
Track per inches  
TRONF Track 0 not found  
ECC  
ER  
Error checking and correction  
Error register  
Typ  
Typical  
ERR  
Error  
U
F
UNC  
VCM  
Uncorrectable ECC error  
FR  
Feature register  
V
H
Voice coil motor  
HA  
Host adapter  
C141-E203-01EN  
AB-1  
This page is intentionally left blank.  
Index  
busy (BSY) bit .........................................5-20  
A
C
A/D converter circuit............................... 4-11  
AAM...................................................... 5-101  
acceleration mode.................................... 4-18  
acoustic noise ............................................ 1-9  
acoustic noise specification....................... 1-9  
active field............................................... 5-21  
active idle mode......................................... 6-6  
active mode.........................................6-6, 6-9  
actuator...............................................2-2, 4-2  
actuator motor control ............................. 4-17  
adaptability................................................ 1-2  
cache  
read-ahead ............................................6-11  
write.............................................. 1-3, 6-18  
cache operation ........................................6-18  
cache system, read-ahead...........................1-3  
cached data, invalidation of .....................6-18  
caching  
command for .............................. 6-12, 6-18  
data for .................................................6-12  
caching data, invalidating ........................6-13  
caching operation.....................................6-12  
calibration ................................................4-13  
calibration, self...........................................4-7  
capability, off-line data collection ...........5-59  
capacity, large............................................1-2  
carriage, head.............................................4-2  
cashing function at power-on...................6-19  
caution, handling........................................3-7  
CHECK POWER MODE ........................5-48  
checksum ..............................5-60, 5-62, 5-64  
advanced power management........1-12, 1-13,  
5-100  
AGC circuit ............................................. 4-10  
air circulation system................................. 2-2  
air filter...................................................... 4-3  
ambient temperature.................................. 3-6  
amplifier, power ...................................... 4-13  
APM ...................................................... 5-100  
area, data.................................................. 4-14  
area, service............................................... 3-7  
attribute ID .............................................. 5-56  
circuit  
A/D converter.......................................4-11  
AGC .....................................................4-10  
controller ........................................ 2-3, 4-4  
digital PLL ...........................................4-11  
driver ....................................................4-13  
FIR........................................................4-11  
programmable filter..............................4-10  
read.......................................................4-10  
read/write.................................2-3, 4-3, 4-9  
servo.......................................................4-3  
servo burst capture ...............................4-13  
servo control.........................................4-12  
spindle motor control ...........................4-13  
spindle motor driver ...............................4-3  
Viterbi detection...................................4-11  
write........................................................4-9  
circuit configuration........................... 4-3, 4-5  
attribute value  
current.................................................. 5-57  
raw ....................................................... 5-57  
worst case............................................. 5-57  
automatic acoustic management............ 5-101  
average positioning time............................ 1-2  
B
BIST active - bidirectional ...................... 5-15  
block diagram  
read/write circuit.................................... 4-9  
servo control circuit ............................. 4-12  
blower effect.............................................. 2-2  
blower on rotating disk.............................. 4-3  
breather filter............................................. 4-3  
breather, location of................................... 3-5  
buffer, data................................................. 1-3  
circulation filter..........................................2-2  
CN1..........................................................3-10  
C141-E203-01EN  
IN-1  
Index  
code  
control  
actuator motor.......................................4-17  
command...................................5-22, 5-139  
diagnostic .............................................5-39  
gray ......................................................4-16  
command code..............................5-22, 5-139  
servo .....................................................4-12  
spindle motor........................................4-18  
controller circuit................................. 2-3, 4-4  
command code and parameter .................5-22  
command data structure...........................5-62  
command description...............................5-25  
command execution, status after..............5-17  
command field.........................................5-21  
command for caching .....................6-12, 6-18  
converter, D/A..........................................4-13  
CSR..........................................................4-13  
current attribute value ..............................5-57  
current fluctuation  
at +5 V power-on....................................1-8  
current fluctuation......................................1-8  
current LBA under test.............................5-65  
current requirement....................................1-7  
current span under test .............................5-66  
cylinder high field....................................5-19  
cylinder low field .....................................5-18  
cylinder, SA .............................................4-14  
command processing during  
self-calibration .......................................4-8  
command protocol .................................5-141  
DMA data-in ......................................5-146  
DMA data-out ....................................5-147  
native queued .....................................5-148  
non-data...................................5-141, 5-142  
PIO data-in.........................................5-143  
PIO data-out.......................................5-144  
command, host.........................................5-22  
command, power........................................6-8  
communication layer ...............................5-10  
compact......................................................1-2  
compensating open loop gain ....................4-7  
COMRESET..........................................5-151  
COMRESET response.............................6-19  
COMRESET sequence ..........................5-152  
COMRESET, response to..........................6-4  
D
D/A converter...........................................4-13  
DAC .........................................................4-13  
data - host to device or device to  
host (bidirectional) ...............................5-16  
data area ...................................................4-14  
data assurance at power failure ................1-10  
data buffer ..................................................1-3  
data buffer structure .................................6-11  
data for caching........................................6-12  
data format of  
conceptual layer, conceptual  
device attribute value............................5-55  
guarantee failure threshold value..........5-55  
READ LOG EXT log page 10h..........5-125  
SMART comprehensive error log ........5-63  
SMART summary error log..................5-61  
data format version number .....................5-56  
data request (DRQ) bit.............................5-20  
data transfer mode....................................5-99  
data transfer rate.......................................4-11  
data-surface servo format.........................4-14  
DE ..............................................................2-2  
diagram ..................................................5-9  
condition, installation ................................3-1  
configuration  
circuit ..............................................4-3, 4-5  
device ..............................................2-1, 2-2  
drive system ...........................................2-3  
physical sector servo............................4-15  
power supply..........................................4-4  
system ....................................................2-3  
connection  
drive .......................................................2-3  
connection to SATA interface ...................1-3  
device attribute value, data format  
connection with host system......................3-9  
connector location......................................3-9  
connector pinout ........................................5-8  
connector specification  
of...........................................................5-55  
device configuration........................... 2-1, 2-2  
DEVICE CONFIGURATION .................5-67  
DEVICE CONFIGURATION  
host system...........................................3-10  
connector, device.......................................3-9  
content, self-calibration .............................4-7  
FREEZE LOCK ...................................5-68  
DEVICE CONFIGURATION  
IDENTIFY ...........................................5-69  
IN-2  
C141-E203-01EN  
Index  
DEVICE CONFIGURATION  
IDENTIFY data structure .................... 5-70  
DEVICE CONFIGURATION  
effect, blower .............................................2-2  
electrical specification ...............................5-6  
enabling and disabling .............................6-19  
ENDEC....................................................4-11  
environmental specification.......................1-8  
RESTORE............................................ 5-68  
DEVICE CONFIGURATION SET ........ 5-69  
device connector........................................ 3-9  
device control field.................................. 5-21  
device operation, theory of........................ 4-1  
device overview......................................... 1-1  
device ready (DRDY) bit......................... 5-20  
device seek complete (DSC) bit .............. 5-20  
device specification................................... 1-4  
device write fault (DF) bit....................... 5-20  
device/head field...................................... 5-19  
error  
positioning............................................1-11  
unrecoverable read ...............................1-11  
error (ERR) bit.........................................5-20  
error correction by ECC.............................1-3  
error data structure...................................5-62  
error field .................................................5-17  
error logging capability............................5-59  
error posting...........................................5-139  
error rate...................................................1-11  
Device-initiated interface power  
management......................................... 1-14  
EXECUTE DEVICE  
Device-nitiated power management  
DIAGNOSTIC .....................................5-39  
interface ............................................... 1-14  
diagnosis.................................................... 6-2  
diagnosis, self............................................ 1-3  
diagnostic code...............................5-17, 5-39  
digital PLL circuit ................................... 4-11  
dimension .................................................. 3-2  
DIPM....................................................... 1-14  
disk .....................................................2-2, 4-2  
disk drive outerview.................................. 2-2  
disk enclosure............................................ 2-2  
dissipation, power...................................... 1-7  
DMA active - device to host.................... 5-13  
DMA buffer offset field........................... 5-21  
DMA data-in command protocol........... 5-146  
DMA data-out command protocol......... 5-147  
execution example of READ  
MULTIPLE command .........................5-72  
execution timing of self-calibration...........4-8  
external force, sensing and  
compensating for....................................4-7  
F
failure prediction capability flag..............5-59  
feature ........................................................1-2  
feature flag...............................................5-66  
features field ............................................5-18  
function ................................................5-51  
value.....................................................5-51  
features field =  
01h......................................................5-114  
02h......................................................5-116  
03h......................................................5-117  
04h......................................................5-118  
C0h.......................................................5-68  
C1h.......................................................5-68  
C2h.......................................................5-69  
C3h.......................................................5-69  
features field value...................................5-97  
DMA setup - device to host or host  
to device (bidirectional)....................... 5-14  
DMA transfer count field ........................ 5-21  
DOWNLOAD MICROCODE................. 5-41  
DOWNLOAD MICROCODE  
operation .............................................. 5-41  
drive connection ........................................ 2-3  
drive error logging capability.................. 5-59  
drive system configuration ........................ 2-3  
driver circuit ............................................ 4-13  
driver circuit, spindle motor ...................... 4-3  
filter  
air............................................................4-3  
breather...................................................4-3  
circulation....................................... 2-2, 4-3  
FIR circuit................................................4-11  
FIS type....................................................5-12  
flag  
E
E_status field........................................... 5-21  
ECC, for error correction........................... 1-3  
ECC, for retry............................................ 1-3  
failure prediction capability .................5-59  
status.....................................................5-57  
C141-E203-01EN  
IN-3  
Index  
fluctuation, current.....................................1-8  
FLUSH CACHE......................................5-83  
FLUSH CACHE EXT ...........................5-134  
format, servo frame..................................4-16  
frame..........................................................3-4  
IDENTIFY DEVICE command,  
information to be read by .....................5-87  
IDENTIFY DEVICE DMA .....................5-86  
IDLE ........................................................5-46  
IDLE IMMEDIATE.................................5-44  
information to be read by  
frame information structure (FIS),  
IDENTIFY DEVICE command ...........5-87  
outline of..............................................5-12  
INITIALIZE DEVICE  
frame structure, mounting..........................3-4  
frequency characteristic of  
PARAMETERS....................................5-40  
inner guard band.......................................4-14  
input voltage...............................................1-6  
installation..................................................3-8  
installation condition..................................3-1  
programmable filter .............................4-10  
full hit ......................................................6-15  
function......................................................1-2  
G
interface.............................................. 1-3, 5-1  
logical.....................................................5-9  
physical...................................................5-2  
SATA......................................................2-3  
interface power management ......... 1-14, 1-15  
interface power save...................................6-9  
interface signal...........................................5-2  
invalidating caching data .........................6-13  
invalidation of cached data.......................6-18  
IPM ..........................................................1-14  
gray code..................................................4-16  
guarantee failure threshold ......................5-60  
guarantee failure threshold value,  
data format of.......................................5-55  
guard band  
inner .....................................................4-14  
outer .....................................................4-14  
H
handling caution ........................................3-7  
head............................................................2-2  
head carriage..............................................4-2  
high resistance against shock.....................1-2  
high-speed transfer rate..............................1-2  
HIPM .......................................................1-14  
L
large capacity .............................................1-2  
layer, communication...............................5-10  
limitation of mounting ...............................3-4  
load function ............................................1-11  
location of breather ....................................3-5  
location, connector.....................................3-9  
lock function, operation of.....................5-102  
log directory data format..........................5-60  
logical interface..........................................5-9  
low noise ....................................................1-2  
low power idle mode..................................6-6  
low vibration ..............................................1-2  
hit  
full........................................................6-15  
partial ...................................................6-17  
sequential .............................................6-15  
host command..........................................5-22  
host system  
connection..............................................3-9  
host system connector specification ........3-10  
Host-initiated interface power  
management.........................................1-14  
Host-initiated power management  
M
mark, servo...............................................4-16  
master password.....................................5-104  
mean time between failures......................1-10  
mean time to repair ..................................1-10  
measurement point, surface  
temperature.............................................3-6  
media defect.............................................1-11  
interface................................................1-14  
I
ID, attribute..............................................5-56  
identifier and security level,  
relationship between ..........................5-102  
IDENTIFY DEVICE ...............................5-85  
microcode data, example of  
rewriting ...............................................5-42  
IN-4  
C141-E203-01EN  
Index  
microprocessor unit................................. 4-12  
miss-hit.................................................... 6-14  
mode  
seek.......................................................4-17  
track-following.....................................4-17  
operation sequence, power-on ...................4-6  
orientation..................................................3-3  
out of band signaling..................................5-4  
outer guard band ......................................4-14  
outerview, disk drive..................................2-2  
outline ........................................................4-2  
acceleration.......................................... 4-18  
active...............................................6-6, 6-9  
active idle............................................... 6-6  
low power idle ....................................... 6-6  
partial..................................................... 6-9  
power save ......................................1-2, 6-6  
settable................................................. 5-97  
sleep....................................................... 6-7  
slumber ................................................ 6-10  
stable rotation....................................... 4-19  
standby................................................... 6-7  
start ...................................................... 4-18  
model......................................................... 1-5  
model name, Examples of ......................... 1-5  
motor  
spindle.................................................... 2-2  
voice coil................................................ 4-2  
motor control, actuator ............................ 4-17  
motor control, spindle.............................. 4-18  
mounting.................................................... 3-3  
mounting frame structure .......................... 3-4  
mounting limitation................................... 3-4  
moving head to reference cylinder .4-13, 4-17  
MPU ........................................................ 4-12  
MTBF...................................................... 1-10  
MTTR...................................................... 1-10  
outline of  
frame information structure (FIS) ........5-12  
shadow block register...........................5-11  
overview, device........................................1-1  
P
PAD .........................................................4-16  
parameter ..................................... 5-22, 5-139  
partial hit..................................................6-17  
partial mode ...............................................6-9  
password  
master.................................................5-104  
user.....................................................5-104  
performance ...............................................1-2  
physical Interface.......................................5-2  
physical sector servo configuration .........4-15  
pinout, connector .......................................5-8  
PIO data-in command protocol.. 5-143, 5-144  
PIO data-out command protocol 5-144, 5-145  
positioning error.......................................1-11  
positioning time, average...........................1-2  
power amplifier........................................4-13  
power command.........................................6-8  
power dissipation.......................................1-7  
N
native queued command protocol.......... 5-148  
negative voltage......................................... 1-6  
negative voltage at +5 V power-off........... 1-6  
power management  
noise  
advanced..................................... 1-12, 1-13  
interface...................................... 1-14, 1-15  
power on/off sequence...............................1-8  
acoustic .................................................. 1-9  
low ......................................................... 1-2  
vibration................................................. 1-2  
non-data command protocol.......5-141, 5-142  
power requirement.....................................1-6  
power save .................................................6-6  
interface..................................................6-9  
power save mode ............................... 1-2, 6-6  
power save mode of interface ....................6-9  
power supply configuration .......................4-4  
power supply pin......................................3-10  
power supply segment .............................3-10  
power-on cashing function.......................6-19  
power-on operation sequence ....................4-6  
power-on reset........................................5-151  
power-on sequence ........................ 4-6, 5-151  
number, product......................................... 1-5  
O
off-line data collection capability............ 5-59  
off-line data collection status..........5-57, 5-58  
open loop gain, compensating................... 4-7  
operation.................................................... 6-1  
cache .................................................... 6-18  
caching................................................. 6-12  
DOWNLOAD MICROCODE............. 5-41  
C141-E203-01EN  
IN-5  
Index  
power-on, response to................................6-2  
PreAMP .....................................................4-9  
precompensation, write..............................4-9  
primitive mnemonic...................................5-5  
product number..........................................1-5  
product number, Examples of....................1-5  
programmable filter circuit......................4-10  
register - host to device............................5-12  
reliability..................................................1-10  
requirement  
current.....................................................1-7  
power......................................................1-6  
reset............................................................6-2  
reset response...........................................6-19  
reset, power-on and COMRESET..........5-151  
resistance against shock, high ....................1-2  
response to COMRESET ...........................6-4  
response to power-on .................................6-2  
response to software reset ..........................6-5  
retry by ECC ..............................................1-3  
programmable filter, frequency  
characteristic of....................................4-10  
protocol, command ................................5-141  
R
raw attribute value ...................................5-57  
READ BUFFER ......................................5-82  
read circuit...............................................4-10  
READ DMA............................................5-78  
READ DMA EXT .................................5-120  
read error, unrecoverable.........................1-11  
READ FP DMA QUEUED ...................5-137  
rewriting microcode data  
(384 K bytes ), example of...................5-42  
ripple ..........................................................1-6  
RLL algorithm run length limited  
algorithm ................................................4-9  
S
READ FP DMA QUEUED  
SA cylinder ..............................................4-14  
SATA interface ..........................................2-3  
SATA interface cable connection ............3-11  
SATA interface, connection to...................1-3  
SD/SC ......................................................4-11  
sector count field......................................5-18  
sector number field...................................5-18  
sector servo configuration, physical.........4-15  
command protocol .............................5-149  
READ LOG EXT ..................................5-123  
READ LOG EXT log page 10h,  
data format of.....................................5-125  
READ LONG ..........................................5-29  
READ MULTIPLE..................................5-71  
READ MULTIPLE command,  
execution example of ...........................5-72  
READ MULTIPLE EXT.......................5-122  
READ NATIVE MAX ADDRESS.......5-112  
SECURITY DISABLE  
PASSWORD ......................................5-110  
SECURITY ERASE PREPARE............5-106  
SECURITY ERASE UNIT....................5-107  
SECURITY FREEZE LOCK.................5-108  
security password, content of.................5-110  
SECURITY SET PASSWORD .............5-102  
READ NATIVE MAX ADDRESS  
EXT....................................................5-121  
READ SECTOR (S) EXT .....................5-119  
READ SECTOR(S) .................................5-27  
read segment buffer, using.......................6-14  
READ VERIFY SECTOR (S) EXT......5-133  
READ VERIFY SECTOR(S)..................5-36  
read/write circuit......................... 2-3, 4-3, 4-9  
read/write circuit block diagram................4-9  
read/write preamplifier ..............................4-9  
read-ahead cache......................................6-11  
read-ahead cache system............................1-3  
RECALIBRATE......................................5-26  
recommended equipment...........................3-8  
recovery, write/read.................................4-16  
reference cylinder, moving head to.........4-13,  
4-17  
register - device to host............................5-13  
IN-6  
SECURITY SET PASSWORD  
data, contents of..................................5-102  
SECURITY UNLOCK ..........................5-104  
SEEK........................................................5-38  
seek operation ..........................................4-17  
seeking to specified cylinder....................4-13  
selective self-test feature flag...................5-66  
selective self-test log data structure .........5-65  
selective self-test pending time  
[min].....................................................5-66  
self-calibration ...........................................4-7  
command processing during...................4-8  
content ....................................................4-7  
C141-E203-01EN  
Index  
execution timing of................................ 4-8  
self-diagnosis............................................. 1-3  
self-test execution status.................5-58, 5-64  
self-test index .......................................... 5-64  
self-test number....................................... 5-64  
SMART....................................................5-50  
SMART comprehensive error log,  
data format of.......................................5-63  
SMART error logging..............................5-60  
SMART self-test......................................5-63  
SMART self-test log data format.............5-64  
sensing and compensating for  
external force ......................................... 4-7  
SMART summary error log, data  
format of...............................................5-61  
sequence  
power on/off........................................... 1-8  
power-on................................................ 4-6  
power-on operation................................ 4-6  
sequential hit............................................ 6-15  
software reset (SRST)..............................5-21  
software reset response ............................6-19  
software reset, response to.........................6-5  
specification  
serial ATA function............................... 5-101  
service area................................................ 3-7  
service life ............................................... 1-10  
servo A .................................................... 4-16  
servo B..................................................... 4-16  
servo burst capture circuit ....................... 4-13  
servo C..................................................... 4-16  
servo circuit............................................... 4-3  
servo control............................................ 4-12  
servo control circuit................................. 4-12  
acoustic noise .........................................1-9  
device .....................................................1-4  
environmental.........................................1-8  
summary.................................................1-4  
specified cylinder, seeking to...................4-13  
spindle........................................................4-2  
spindle motor .............................................2-2  
control ..................................................4-18  
control circuit .......................................4-13  
driver circuit...........................................4-3  
start.......................................................4-12  
stable rotation mode.................................4-19  
servo control circuit, block diagram  
of.......................................................... 4-12  
standard value, surface temperature...........3-6  
STANDBY...............................................5-45  
STANDBY IMMEDIAT .........................5-43  
standby mode.............................................6-7  
start mode.................................................4-18  
start, spindle motor ..................................4-12  
status ........................................................5-62  
status after command execution...............5-17  
status field................................................5-20  
status flag.................................................5-57  
status report on error occurrence..............6-19  
status, off-line data collection..................5-57  
structure, data buffer................................6-11  
subassemblies.............................................4-2  
subcommand............................................5-51  
servo D .................................................... 4-16  
servo format, data-surface ....................... 4-14  
servo frame format .................................. 4-16  
servo mark............................................... 4-16  
SET FEATURES..................................... 5-97  
SET MAX.............................................. 5-113  
SET MAX ADDRESS .......................... 5-113  
SET MAX ADDRESS EXT.................. 5-128  
SET MAX FREEZE LOCK.................. 5-118  
SET MAX LOCK.................................. 5-116  
SET MAX SET PASSWORD............... 5-114  
SET MAX UNLOCK............................ 5-117  
SET MULTIPLE MODE ........................ 5-76  
settable mode........................................... 5-97  
shadow block register.............................. 5-17  
shadow block register, outline of............. 5-11  
shock.......................................................... 1-9  
shock specification .................................... 1-9  
signal interface regulation ......................... 5-4  
signal segment......................................... 3-10  
signal, interface ......................................... 5-2  
SLEEP ..................................................... 5-49  
sleep mode................................................. 6-7  
slumber mode .......................................... 6-10  
surface temperature measurement  
point .......................................................3-6  
surface temperature standard value............3-6  
system configuration..................................2-3  
T
tag field information ..............................5-125  
temperature range ......................................1-2  
temperature, ambient .................................3-6  
C141-E203-01EN  
IN-7  
Index  
test span ...................................................5-65  
theory of device operation .........................4-1  
total number of drive error.......................5-62  
track-following operation ........................4-17  
transfer rate, data .....................................4-11  
transfer rate, high-speed.............................1-2  
W
worst case attribute value.........................5-57  
WRITE BUFFER.....................................5-84  
write cache ....................................... 1-3, 6-18  
write circuit ................................................4-9  
WRITE DMA...........................................5-80  
WRITE DMA EXT................................5-127  
WRITE DMA FUA EXT.......................5-136  
WRITE FP DMA QUEUED..................5-138  
U
unload function........................................1-11  
unrecoverable read error..........................1-11  
user password ........................................5-104  
using read segment buffer........................6-14  
WRITE FP DMA QUEUED  
command protocol..............................5-150  
WRITE LOG EXT.................................5-131  
WRITE LONG.........................................5-32  
WRITE MULTIPLE ................................5-74  
WRITE MULTIPLE EXT .....................5-130  
WRITE MULTIPLE FUA EXT.............5-135  
write precompensation...............................4-9  
WRITE SECTOR (S) EXT....................5-126  
WRITE SECTOR(S)................................5-30  
WRITE VERIFY......................................5-34  
write/read recovery ..................................4-16  
V
VCM current sense resister......................4-13  
vibration.....................................................1-9  
vibration specification ...............................1-9  
Viterbi detection circuit...........................4-11  
voice coil motor.........................................4-2  
IN-8  
C141-E203-01EN  
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MHT2080BH, MHT2060BH, MHT2040BH  
DISK DRIVES PRODUCT MANUAL  
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DISK DRIVES PRODUCT MANUAL  
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