Transcend Information TS8GSSD25S S User Manual

TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
Description  
Features  
Due to smaller size (fit the standard dimensions of  
2.5” SATA Hard Disk Drives), huge capacity, high  
speed, and low power consumption, Solid State Disk  
is perfect replacement storage device for PCs,  
Laptops, gaming systems, and handheld devices.  
RoHS compliant  
Fully compatible with devices and OS that support the  
SATA3.0Gbps standard  
Non-volatile Flash Memory for outstanding data  
retention  
Built-in ECC (Error Correction Code) functionality and  
wear-leveling algorithm ensures highly reliable of data  
transfer  
Placement  
Shock resistance  
Dimensions  
Side  
A
Millimeters  
100.00 ± 0.40  
69.85 ± 0.20  
9.50 ± 0.15  
Inches  
3.937 ± 0.016  
2.750 ± 0.008  
0.374 ± 0.004  
B
C
1
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
Performance  
Model P/N  
Sequential Read(Max.)  
150 MB/s  
Sequential Write(Max.)  
90 MB/s  
TS8GSSD25S-S  
TS16GSSD25S-M  
TS16GSSD25S-S  
TS32GSSD25S-M  
TS32GSSD25S-S  
TS64GSSD25S-M  
TS64GSSD25S-S  
TS128GSSD25S-M  
TS192GSSD25S-M  
150 MB/s  
50 MB/s  
150 MB/s  
100 MB/s  
90 MB/s  
150 MB/s  
150 MB/s  
120 MB/s  
90 MB/s  
150 MB/s  
170 MB/s  
140 MB/s  
90 MB/s  
150 MB/s  
150 MB/s  
90 MB/s  
Actual Capacity  
Model P/N  
User Max. LBA  
15,621,984  
31,277,056  
31,277,056  
62,586,880  
62,586,880  
125,206,528  
125,206,528  
250,445,824  
375,685,120  
Cylinder  
15,498  
16,383  
16,383  
16,383  
16,383  
16,383  
16,383  
16,383  
16,383  
Head  
16  
Sector  
63  
TS8GSSD25S-S  
TS16GSSD25S-M  
TS16GSSD25S-S  
TS32GSSD25S-M  
TS32GSSD25S-S  
TS64GSSD25S-M  
TS64GSSD25S-S  
TS128GSSD25S-M  
TS192GSSD25S-M  
16  
63  
16  
63  
16  
63  
16  
63  
16  
63  
16  
63  
16  
63  
16  
63  
3
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
Reliability  
Data Reliability  
Data Retention  
MTBF  
Supports BCH ECC 8 bits in 512 bytes  
10 years  
1,000,000 hours  
Vibration  
3.0G, 5 - 800Hz  
3.0G, 5 - 800Hz  
Operating  
Non-Operating  
* Note: Reference to the IEC 60068-2-6 Testing procedures; Operating-Sine wave, 5-800Hz/1 oct., 1.5mm, 3g, 0.5  
hr./axis, total 1.5 hrs.  
Shock  
1500G, 0.5ms  
1500G, 0.5ms  
Operating  
Non-Operating  
* Note: Reference to the IEC 60068-2-27 Testing procedures; Operating-Half-sine wave, 1500g, 0.5ms, 3 times/dir., total  
18 times.  
Regulations  
CE, FCC and BSMI  
Compliance  
4
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
Package Dimensions  
Below figure illustrates the Transcend 2.5” SATA Solid State Disk. All dimensions are in mm.  
5
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
Pin Assignments  
Pin No.  
Pin Name  
Pin No.  
Pin Name  
01  
03  
05  
07  
09  
11  
13  
15  
17  
19  
21  
GND  
A-  
02  
04  
06  
08  
10  
12  
14  
16  
18  
20  
22  
A+  
GND  
B+  
B-  
GND  
NC  
NC  
NC  
GND  
GND  
5V  
GND  
5V  
5V  
GND  
GND  
NC  
GND  
NC  
NC  
Pin Layout  
6
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
Block Diagram  
7
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
Reliability  
Wear-Leveling algorithm  
The controller supports static/dynamic wear leveling. When the host writes data, the controller will find and use the block  
with the lowest erase count among the free blocks. This is known as dynamic wear leveling. When the free blocks' erase  
count is higher than the data blocks', it will activate the static wear leveling, replacing the not so frequently used user  
blocks with the high erase count free blocks.  
ECC algorithm  
The controller use BCH8 ECC algorithm per 512 bytes. BCH8 can correct up to 8 random error bits within 512 data  
bytes.  
Bad-block management  
When the flash encounters ECC failed, program fail or erase fail, the controller will mark the block as bad block to  
prevent the used of this block and caused data lost later on.  
8
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
SATA Interface  
Out of bank signaling  
There shall be three Out Of Band (OOB) signals used/detected by the Phy: COMRESET, COMINIT, and COMWAKE.  
COMINIT, COMRESET and COMWAKE OOB signaling shall be achieved by transmission of either a burst of four Gen1  
ALIGNP primitives or a burst composed of four Gen1 Dwords with each Dword composed of four D24.3 characters, each  
burst having a duration of 160 UIOOB. Each burst is followed by idle periods (at common-mode levels), having durations  
as depicted in Figure 4 and Table 2.  
Figure 4 : OOB signals  
Table 2 : OOB signal times  
9
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
COMRESET  
COMRESET always originates from the host controller, and forces a hardware reset in the device. It is indicated by  
transmitting bursts of data separated by an idle bus condition. The OOB COMRESET signal shall consist of no less than  
six data bursts, including inter-burst temporal spacing. The COMRESET signal shall be:  
1) Sustained/continued uninterrupted as long as the system hard reset is asserted, or  
2) Started during the system hardware reset and ended some time after the negation of system hardware reset, or  
3) Transmitted immediately following the negation of the system hardware reset signal.  
The host controller shall ignore any signal received from the device from the assertion of the hardware reset signal until  
the COMRESET signal is transmitted. Each burst shall be 160 Gen1 UI’s long (106.7 ns) and each inter-burst idle state  
shall be 480 Gen1 UI’s long (320 ns). A COMRESET detector looksfor four consecutive bursts with 320 ns spacing  
(nominal). Any spacing less than 175 ns or greater than 525 ns shall invalidate the COMRESET detector output. The  
COMRESET interface signal to the Phy layer shall initiate the Reset sequence shown in Figure 5 below. The interface  
shall be held inactive for at least 525 ns after the last burst to ensure far-end detector detects the negation properly.  
10  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
Figure 5 : comreset sequence  
Description:  
1. Host/device are powered and operating normally with some form of active communication.  
2. Some condition in the host causes the host to issue COMRESET  
3. Host releases COMRESET. Once the condition causing the COMRESET is released, the host releases the  
COMRESET signal and puts the bus in a quiescent condition.  
4. Device issues COMINIT – When the device detects the release of COMRESET, it responds with a COMINIT. This is  
also the entry point if the device is late starting. The device may initiate communications at any time by issuing a COMINIT.  
5. Host calibrates and issues a COMWAKE.  
6. Device responds – The device detects the COMWAKE sequence on its RX pair and calibrates its transmitter (optional).  
Following calibration the device sends a six burst COMWAKE sequence and then sends a continuous stream of the  
ALIGN sequence starting at the device's highest supported speed. After ALIGNP Dwords have been sent  
11  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
for 54.6us (2048 nominal Gen1 Dword times) without a response from the host as determined by detection of ALIGNP  
primitives received from the host, the device assumes that the host cannot communicate at that speed. If additional  
speeds are available the device tries the next lower supported speed by sending ALIGNP Dwords at that rate for  
54.6 us (2048 nominal Gen1 Dword times.) This step is repeated for as many slower speeds as are supported. Once the  
lowest speed has been reached without response from the host, the device enters an error state.  
7. Host locks – after detecting the COMWAKE, the host starts transmitting D10.2 characters at its lowest supported rate.  
Meanwhile, the host receiver locks to the ALIGN sequence and, when ready, returns the ALIGN sequence to the device at  
the same speed as received. A host shall be designed such that it acquires lock in 54.6us (2048  
nominal Gen1 Dword times) at any given speed. The host should allow for at least 873.8 us (32768 nominal Gen1 Dword  
times) after detecting the release of COMWAKE to receive the first ALIGNP. This ensures interoperability with  
multi-generational and synchronous designs. If no ALIGNP is received within 873.8 us (32768 nominal Gen1 Dword  
times) the host restarts the power-on sequence – repeating indefinitely until told to stop by the Application layer.  
8. Device locks – the device locks to the ALIGN sequence and, when ready, sends SYNCP indicating it is ready to start  
normal operation.  
9. Upon receipt of three back-to-back non-ALIGNP primitives, the communication link is established and normal operation  
may begin.  
COMINIT  
COMINIT always originates from the drive and requests a communication initialization. It is electrically identical to the  
COMRESET signal except that it originates from the device and is sent to the host. It is used by the device to request a  
reset from the host in accordance to the sequence shown in Figure 6, below.  
12  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
Figure 6 : cominit sequence  
Description:  
1. Host/device are powered and operating normally with some form of active communication.  
2. Some condition in the device causes the device to issues a COMINIT  
3. Host calibrates and issues a COMWAKE.  
4. Device responds – The device detects the COMWAKE sequence on its RX pair and calibrates its transmitter (optional).  
Following calibration the device sends a six burst COMWAKE sequence and then sends a continuous stream of the  
ALIGN sequence starting at the device's highest supported speed. After ALIGNP Dwords have been sent for 54.6 us (2048  
nominal Gen1 Dword times) without a response from the host as determined by detection of ALIGNP primitives received  
from the host, the device assumes that the host cannot communicate at that speed. If additional speeds are available the  
device tries the next lower supported speed by sending ALIGNP Dwords at that rate for 54.6 us (2048 nominal Gen1  
Dword times.) This step is repeated for as many slower speeds as are supported. Once the lowest speed has been  
reached without response from the host, the device enters an error state.  
13  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
5. Host locks – after detecting the COMWAKE, the host starts transmitting D10.2 characters at its lowest supported rate.  
Meanwhile, the host receiver locks to the ALIGN sequence and, when ready, returns the ALIGN sequence to the device at  
the same speed as received. A host shall be designed such that it acquires lock in 54.6 us (2048 nominal Gen1 Dword  
times) at any given speed. The host should allow for at least 873.8 us (32768 nominal Gen1 Dword times) after detecting  
the release of COMWAKE to receive the first ALIGNP. This ensures interoperability with multi-generational and  
synchronous designs. If no ALIGNP is received within 873.8 us (32768 nominal Gen1 Dword times) the host restarts the  
power-on sequence – repeating indefinitely until told to stop by the Application layer. 6. Device locks – the device locks to  
the ALIGN sequence and, when ready, sends SYNCP indicating it is ready to start normal operation.  
6. Upon receipt of three back-to-back non-ALIGNP primitives, the communication link is established and normal operation  
may begin.  
Power on sequence timing diagram  
The following timing diagrams and descriptions are provided for clarity and are informative.  
Figure 7 : power on sequence  
14  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
Description:  
1. Host/device power-off - Host and device power-off.  
2. Power is applied - Host side signal conditioning pulls TX and RX pairs to neutral state (common mode voltage).  
3. Host issues COMRESET  
4. Host releases COMRESET. Once the power-on reset is released, the host releases the COMRESET signal and puts  
the bus in a quiescent condition.  
5. Device issues COMINIT – When the device detects the release of COMRESET, it responds with a COMINIT. This is  
also the entry point if the device is late starting. The device may initiate communications at any time by issuing a COMINIT.  
6. Host calibrates and issues a COMWAKE.  
7. Device responds – The device detects the COMWAKE sequence on its RX pair and calibrates its transmitter (optional).  
Following calibration the device sends a six burst COMWAKE sequence and then sends a continuous stream of the  
ALIGN sequence starting at the device's highest supported speed. After ALIGNP primitives have been sent for 54.6 us  
(2048 nominal Gen1 Dword times) without a response from the host as determined by detection of ALIGNP primitives  
received from the host, the device assumes that the host cannot communicate at that speed. If additional speeds are  
available the device tries the next lower supported speed by sending ALIGNP primitives at that rate for 54.6 us (2048  
nominal Gen1 Dword times.) This step is repeated for as many slower speeds as are supported. Once the lowest speed  
has been reached without response from the host, the device shall enter an error state.  
8. Host locks – after detecting the COMWAKE, the host starts transmitting D10.2 characters at its lowest supported rate.  
Meanwhile, the host receiver locks to the ALIGN sequence and, when ready, returns the ALIGN sequence to the device at  
the same speed as received. A host shall be designed such that it acquires lock in 54.6 us (2048 nominal Gen1 Dword  
times) at any given speed. The host should allow for at least 873.8 us (32768 nominal Gen1 Dword times) after detecting  
the release of COMWAKE to receive the first ALIGNP. This insures interoperability with multi-generational and  
synchronous designs. If no ALIGNP is received within 873.8 us (32768 nominal Gen1 Dword times) the host restarts the  
power-on sequence – repeating indefinitely until told to stop by the Application layer.  
9. Device locks – the device locks to the ALIGN sequence and, when ready, sends the SYNCP primitive indicating it is  
ready to start normal operation.  
10. Upon receipt of three back-to-back non-ALIGNP primitives, the communication link is established and normal operation  
may begin.  
ATA command register  
This table with the following paragraphs summarizes the ATA command set.  
15  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
Command Table  
PARAMETERS USED  
Command Name  
Code  
SC  
X
SN  
X
CY  
X
DR  
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
HD  
X
FT  
X
X
X
X
X
X
X
X
X
X
X
O
O
X
X
X
X
X
X
X
X
X
X
X
X
X
X
CHECK POWER MODE  
EXECUTE DIAGNOSTICS  
FLUSH CACHE  
E5h  
90h  
X
X
X
X
E7h  
X
X
X
O
O
X
FLUSH CACHE EXT  
IDENTIFY DEVICE  
EAh  
X
X
X
ECh  
E3h  
X
X
X
IDLE  
O
X
X
X
X
IDLE IMMEDIATE  
E1h  
X
X
X
INITIALIZE DEVICE PARAMETERS  
READ BUFFER  
91h  
O
X
X
X
O
X
E4h  
X
X
READ DMA  
C8h or C9h  
25h  
O
O
O
O
O
O
O
O
O
O
X
O
O
O
O
O
O
O
O
O
O
X
O
O
O
O
O
O
O
O
O
O
X
O
O
O
O
O
O
O
O
O
O
X
READ DMA EXT  
READ FPDMA QUEUED  
READ LOG EXT  
60h  
2Fh  
READ MULTIPLE  
C4h  
READ MULTIPLE EXT  
READ SECTOR(S)  
29h  
20h or 21h  
24h  
READ SECTOR(S) EXT  
READ VERIFY SECTOR(S)  
READ VERIFY SECTOR(S) EXT  
RECALIBRATE  
40h or 41h  
42h  
10h  
SECURITY DISABLE PASSWORD  
SECURITY ERASE PREPARE  
SECURITY ERASE UNIT  
SECURITY FREEZE LOCK  
SECURITY SET PASSWORD  
SECURITY UNLOCK  
SEEK  
F6h  
X
X
X
X
F3h  
X
X
X
X
F4h  
X
X
X
X
F5h  
X
X
X
X
F1h  
X
X
X
X
F2h  
X
X
X
X
7xh  
X
X
O
O
16  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
SET FEATURES  
SET MULTIPLE MODE  
SLEEP  
EFh  
C6h  
O
O
X
X
X
X
X
X
X
X
O
O
O
O
O
O
O
O
O
X
X
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
X
X
X
X
X
X
X
O
O
O
O
O
O
O
O
O
O
X
X
O
X
X
X
X
X
X
O
X
X
X
X
X
E6h  
X
SMART  
B0h  
X
O
X
STANDBY  
E2h  
X
STANDBY IMMEDIATE  
WRITE BUFFER  
E0h  
X
X
E8h  
X
X
WRITE DMA  
CAh or CBh  
35h  
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
WRITE DMA EXT  
WRITE DMA FUA EXT  
WRITE FPDMA QUEUED  
WRITE MULTIPLE  
3Dh  
61h  
C5h  
WRITE MULTIPLE EXT  
WRITE MULTIPLE FUA EXT  
WRITE SECTOR(S)  
39h  
CEh  
30h or 31h  
34h  
WRITE SECTOR(S) EXT  
Note:  
O = Valid, X = Don't care  
SC = Sector Count Register  
SN = Sector Number Register  
CY = Cylinder Low/High Register  
DR = DEVICE SELECT Bit (DEVICE/HEAD Register Bit 4)  
HD = HEAD SELECT Bit (DEVICE/HEAD Register Bit 3-0)  
FT = Features Register  
17  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
ATA Command Specifications  
CHECK POWER MODE (E5h)  
The host can use this command to determine the current power management mode.  
EXECUTE DIAGNOSTICS (90h)  
This command performs the internal diagnostic tests implemented by the drive.  
FLUSH CACHE (E7h)  
This command is used by the host to request the device to flush the write cache. If there is data in the write cache, that  
data shall be written to the media. The BSY bit shall remain set to one until all data has been successfully written or an  
error occurs.  
FLUSH CACHE EXT (EAh)  
48-bit feature set mandatory command. This command is used by the host to request the device to flush the write cache.  
If there is data in the write cache, that data shall be written to the media. The BSY bit shall remain set to one until all data  
has been successfully written or an error occurs.  
IDENTIFY DEVICE (ECh)  
This commands read out 512Bytes of drive parameter information. Parameter Information consists of the arrangement  
and value as shown in the following table. This command enables the host to receive the Identify Drive Information from  
the device.  
18  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
Identify Device Information Default Value  
Word  
Value  
F/V  
Description  
General configuration bit-significant information:  
0
0040h  
F
X
X
X
V
X
15  
0 = ATA device  
14-8 Retired  
7-6 Obsolete  
5-3 Retired  
2
1
0
Reserved  
Retired  
Reserved  
F
V
F
X
F
Number of logical cylinders  
1
2
3FFFh  
C837h  
0010h  
0000h  
003Fh  
0000h  
0000h  
XXXXh  
0000h  
0000h  
XXXXh  
XXXXh  
8001h  
Specific configuration  
Number of logical heads  
Retired  
3
4-5  
6
Number of logical sector per logical track  
Reserved for assignment by the CompactFlash_ Association  
Retired  
7-8  
9
X
F
X
X
F
F
Serial number (20 ASCII characters)  
Retired  
10-19  
20-21  
22  
Obsolete  
Firmware revision (8 ASCII characters)  
Model number (40 ASCII characters)  
23-26  
27-46  
47  
F
F
F
F
15-8 80h  
7-0 00h = Reserved  
01h = Maximum number of 1 sectors on READ/WRITE MULTIPLE commands  
Reserved  
48  
49  
0000h  
2F00h  
Capabilities  
15-14 Reserved for the IDENTIFY PACKET DEVICE command.  
F
F
13  
1 = Standby timer values as specified in this standard are supported  
0 = Standby timer values shall be managed by the device  
Reserved for the IDENTIFY PACKET DEVICE command.  
1 = IORDY supported  
12  
11  
0 = IORDY may be supported  
F
F
F
X
10  
9
1 = IORDY may be disabled  
1 = LBA supported  
8
1 = DMA supported.  
7-0 Retired  
Capabilities  
50  
4000h  
19  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
F
15  
14  
Shall be cleared to zero.  
Shall be set to one.  
F
13-2 Reserved.  
X
F
F
1
0
Obsolete  
Shall be set to one to indicate a device specific Standby timer value minimum.  
15-8 PIO data transfer cycle timing mode  
7-0 Reserved  
51  
52  
0000h  
0000h  
X
Obsolete  
F
F
15-3 Reserved  
2
1
0
1 = the fields reported in word 88 are valid  
0 = the fields reported in word 88 are not valid  
1 = the fields reported in words 70:64 are valid  
0 = the fields reported in words 70:64 are not valid  
1 = the fields reported in words 58:54 are valid  
0 = the fields reported in words 58:54 are not valid  
F
X
53  
0007h  
X
X
X
X
Number of current cylinders  
Number of current heads  
54  
55  
XXXXh  
00XXh  
XXXXh  
XXXXh  
Number of current sector per track  
56  
Current capacity in sectors  
15-9 Reserved  
57-58  
V
V
8
1 = Multiple sector setting is valid  
59  
0101h  
7-0 xxh = Setting for number of sectors that shall be transferred per interrupt on R/W Multiple command  
F
X
Total number of user addressable sectors  
60-61  
62  
XXXXh  
0000h  
Obsolete  
F
V
15-11 Reserved  
10  
1 = Multiword DMA mode 2 is selected  
0 = Multiword DMA mode 2 is not selected  
1 = Multiword DMA mode 1 is selected  
0 = Multiword DMA mode 1 is not selected  
1 = Multiword DMA mode 0 is selected  
0 = Multiword DMA mode 0 is not selected  
V
V
9
8
63  
0007h  
7-3 Reserved  
F
F
F
2
1
0
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  
15-8 Reserved  
64  
0003h  
F
F
7-0 Advanced PIO modes supported  
Minimum Multiword DMA transfer cycle time per word  
Manufacturer’s recommended Multiword DMA transfer cycle time  
Minimum PIO transfer cycle time without flow control  
65  
66  
67  
0078h  
0078h  
0078h  
F
F
20  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
F
Minimum PIO transfer cycle time with IORDY flow control  
Reserved  
68  
0078h  
0000h  
0000h  
69-70  
71-74  
Reserved for the IDENTIFY PACKET DEVICE command  
Queue depth  
15-5 Reserved  
75  
76  
0000h  
0206h  
F
4-0  
Maximum queue depth – 1  
Serial ATA Capabilities  
15-11 Reserved for Serial ATA  
F
F
F
10  
9
1 = Supports Phy Event Counts  
1 = Supports receipt of host initiated power management requests  
1 = Supports the NCQ feature set  
8
7-3 Reserved for Serial ATA  
F
F
F
2
1
0
1 = Supports SATA Gen2 Signaling Speed (3.0Gb/s)  
1 = Supports SATA Gen1 Signaling Speed (1.5Gb/s)  
Shall be cleared to zero  
Reserved for Serial ATA  
77  
78  
0000h  
0008h  
Serial ATA feature supported  
15-7 Reserved for Serial ATA  
F
6
5
4
3
2
1
0
1 = Device supports Software Settings Preservation  
Reserved for Serial ATA  
F
F
F
F
F
1 = Device supports in-order data delivery  
1 = Device supports initiating power management  
1 = Device supports DMA Setup auto-activation  
1 = Device supports non-zero buffer offsets  
Shall be cleared to zero  
Serial ATA feature enabled  
79  
0000h  
15-7 Reserved for Serial ATA  
V
6
5
4
3
2
1
0
1 = Software Settings Preservation enabled  
Reserved for Serial ATA  
V
V
V
V
F
1 = In-order data delivery enabled  
1 = Device initiated power management enabled  
1 = DMA Setup auto-activation enabled  
1 = Non-zero buffer offsets enabled  
Shall be cleared to zero  
Major version number 0000h or FFFFh = device does not report version  
80  
00F0h  
15  
14  
13  
12  
11  
10  
9
Reserved  
F
F
F
F
F
F
F
F
Reserved for ATA/ATAPI-14  
Reserved for ATA/ATAPI-13  
Reserved for ATA/ATAPI-12  
Reserved for ATA/ATAPI-11  
Reserved for ATA/ATAPI-10  
Reserved for ATA/ATAPI-9  
Reserved for ATA/ATAPI-8  
1 = supports ATA/ATAPI-7  
8
7
21  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
F
6
5
4
3
2
1
0
1 = supports ATA/ATAPI-6  
1 = supports ATA/ATAPI-5  
1 = supports ATA/ATAPI-4  
Obsolete  
F
F
F
X
X
Obsolete  
Obsolete  
Reserved  
F
Minor version number  
81  
82  
0000h  
302Bh  
Command and feature sets supported  
X
F
F
F
X
F
F
F
F
F
F
F
F
F
F
F
15  
14  
13  
12  
11  
10  
9
Obsolete  
1 = NOP command supported  
1 = READ BUFFER command supported  
1 = WRITE BUFFER command supported  
Obsolete  
1 = Host Protected Area feature set supported  
1 = DEVICE RESET command supported  
1 = SERVICE interrupt supported  
1 = release interrupt supported  
1 = look-ahead supported  
8
7
6
5
1 = write cache supported  
4
Shall be cleared to zero to indicate that the PACKET Command feature set is not supported.  
1 = mandatory Power Management feature set supported  
1 = Removable Media feature set supported  
3
2
1
1 = Security Mode feature set supported  
0
1 = SMART feature set supported  
Command and feature sets supported  
83  
5000h  
F
F
F
F
F
F
F
F
15  
14  
13  
12  
11  
10  
9
Shall be cleared to zero  
Shall be set to one  
1 = The FLUSH CACHE EXT command is supported  
Shall be set to one to indicate that the mandatory FLUSH CACHE command is supported  
1 = The DCO feature set is supported  
1 = The 48-bit Address feature set is suported  
1 = The AAM feature set is supported  
8
1 = SET MAX security extension supported  
Reserved  
7
F
F
F
F
F
F
F
6
1 = SET FEATURES subcommand required to spinup after power-up  
1 = Power-Up In Standby feature set supported  
1 = Removable Media Status Notification feature set supported  
1 = Advanced Power Management feature set supported  
1 = CFA feature set supported  
5
4
3
2
1
1 = READ/WRITE DMA QUEUED supported  
1 = DOWNLOAD MICROCODE command supported  
0
Command and feature sets supported  
84  
4000h  
F
F
F
15  
14  
13  
Shall be cleared to zero  
Shall be set to one  
1 = The IDLE IMMEDIATE command with UNLOAD feature is supported  
22  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
12-11 Reserved for TLC  
10-9 Obsolete  
X
F
F
F
F
F
F
F
F
F
8
7
6
5
4
3
2
1
0
1 = The 64-bit World wide name is supported  
1 = The WRITE DMA QUEUED FUA EXT command is supported  
1 = The WRITE DMA FUA EXT and WRITE MULTIPLE FUA EXT commands are supported  
1 = The GPL feature set is supported  
1 = The Streaming feature set is supported  
1 = The Media Card Pass Through Command feature set is supported  
1 = Media serial number is supported  
1 = SMART self-test supported  
1 = SMART error logging supported  
Command and feature sets supported or enable  
85  
86  
87  
3029h  
1000h  
4000h  
X
F
F
F
X
V
F
V
V
V
V
F
F
X
V
V
15  
14  
13  
12  
11  
10  
9
Obsolete  
1 = The NOP command is supported  
1 = The READ BUFFER command is supported  
1 = The WRITE BUFFER command is supported  
Obsolete  
1 = HPA feature set is supported  
Shall be cleared to zero to indicate that the DEVICE RESET command is not supported  
1 = The SERVICE interrupt is enabled  
8
7
1 = The release interrupt is enabled  
6
1 = Read look-ahead is enabled  
5
1 = The volatile write cache is enabled  
4
Shall be cleared to zero to indicate that the PACKET Command feature set is not supported.  
Shall be set to one to indicate that the mandatory Power Management feature is supported  
Obsolete  
3
2
1
1 = The Security feature set is enabled  
0
1 = The SMART feature set is enabled  
Command and feature sets supported or enable  
F
15  
14  
13  
12  
11  
10  
9
1 = Words 119-120 are valid  
Reserved  
F
F
F
F
V
V
1 = FLUSH CACHE EXT command supported  
1 = FLUSH CACHE command supported  
1 = The DCO feature set is supported  
1 = The 48-bit Address feature set is supported  
1 = The AAM feature set is enable  
8
1 = The SET MAX security extension is enabled by SET MAX SET PASSWORD  
Reserved for Address Offset Reserved Area Boot Method  
1 = SET FEATURES subcommand required to spin-up after power-up  
1 = The PUIS feature set is enabled  
7
F
V
X
V
F
F
F
6
5
4
Obsolete  
3
1 = The APM feature set is enabled  
2
1 = The CFA feature set is supported  
1
1 = The TCQ feature set is supported  
0
1 = The DOWNLOAD MICROCODE command is supported  
Command and feature sets supported or enabled  
23  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
F
15  
14  
13  
Shall be cleared to zero  
Shall be set to one  
F
F
1 = The IDLE IMMEDIATE command with UNLOAD feature is supported  
12-11 Reserved for TLC  
10-9 Obsolete  
X
F
F
F
F
X
V
V
F
F
8
7
6
5
4
3
2
1
0
1 = The 64-bit World wide name is supported  
1 = The WRITE DMA QUEUED FUA EXT command is supported  
1 = The WRITE DMA FUA EXT and WRITE MULTIPLE FUA EXT commands are supported  
1 = The GPL feature set is supported  
Obsolete  
1 = The Media Card Pass Through Command feature set is supported  
1 = Media serial number is supported  
1 = SMART self-test supported  
1 = SMART error logging supported  
Ultra DMA modes  
88  
203Fh  
15  
14  
Reserved  
V
V
V
V
V
V
V
1 = Ultra DMA mode 6 is selected  
0 = Ultra DMA mode 6 is not selected  
13 1 = Ultra DMA mode 5 is selected  
0 = Ultra DMA mode 5 is not selected  
12 1 = Ultra DMA mode 4 is selected  
0 = Ultra DMA mode 4 is not selected  
11 1 = Ultra DMA mode 3 is selected  
0 = Ultra DMA mode 3 is not selected  
10 1 = Ultra DMA mode 2 is selected  
0 = Ultra DMA mode 2 is not selected  
1 = Ultra DMA mode 1 is selected  
0 = Ultra DMA mode 1 is not selected  
1 = Ultra DMA mode 0 is selected  
0 = Ultra DMA mode 0 is not selected  
9
8
7
6
5
4
3
2
1
0
Reserved  
F
F
F
F
F
F
F
1 = Ultra DMA mode 6 and below are supported  
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  
15-8 Reserved  
89  
0001h  
0001h  
F
7-0 Time required for Normal Erase mode SECURITY ERASE UNIT command  
15-8 Reserved  
90  
F
V
7-0 Time required for Enhanced Erase mode SECURITY ERASE UNIT command  
Current APM level value  
91  
92  
93  
0000h  
FFFEh  
0000h  
V
X
Master Password Identifier  
Hardware reset result  
24  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
Current AAM value  
94  
0000h  
F
V
15-8 Vendor’s recommended AAM value  
7-0  
Current AAM value  
Reserved  
95-99  
100-103  
104-105  
106  
0000h  
XXXXh  
0000h  
4000h  
X
Total Number of User Addressable Logical Sectors for 48-bit commands (QWord)  
Reserved  
Physical sector size / logical sector size  
F
F
F
F
15  
14  
13  
12  
Shall be cleared to zero  
Shall be set to one  
1 = Device has multiple logical sectors per physical sector  
1 = Device Logical Sector longer than 256 Words  
11-4 Reserved  
F
3-0 2x logical sectors per physical sector  
Reserved  
107-118  
119  
0000h  
4000h  
Commands and feature sets supported (Continued from words 84:82)  
15 Shall be cleared to zero  
F
F
14 Shall be set to one  
13-6 Reserved  
F
F
F
F
F
5
4
3
2
1
0
1= The Free-fall Control feature set is supported  
1 = The DOWNLOAD MICROCODE command with mode 3 is supported  
1 = The READ LOG DMA EXT and WRITE LOG DMA EXT commands are supported  
1 = The WRITE UNCORRECTABLE EXT command is supported  
1 = The Write-Read-Verify feature set is supported  
Reserved for DDT  
Commands and feature sets supported or enabled (Continued from words 87:85)  
120  
4000h  
F
F
15 Shall be cleared to zero  
14 Shall be set to one  
13-6 Reserved  
V
F
F
F
V
5
4
3
2
1
0
1= The Free-fall Control feature set is enabled  
1 = The DOWNLOAD MICROCODE command with mode 3 is supported  
1 = The READ LOG DMA EXT and WRITE LOG DMA EXT commands are supported  
1 = The WRITE UNCORRECTABLE EXT command is supported  
1 = The Write-Read-Verify feature set is enabled  
Reserved for DDT  
Reserved for expended supported and enabled settings  
121-126  
127  
0000h  
0000h  
0021h  
X
Obsolete  
Security status  
128  
F
V
F
F
V
V
15-9 Reserved  
8
Security level 0 = High, 1 = Maximum  
7-6 Reserved  
5
4
3
1 = Enhanced security erase supported  
1 = Security count expired  
1 = Security frozen  
25  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
V
2
1
0
1 = Security locked  
1 = Security enabled  
1 = Security supported  
V
F
X
Vendor specific  
129-159  
160-216  
217  
0000h  
0000h  
0001h  
0000h  
0000h  
Reserved  
F
X
Nominal media rotation rate  
Reserved  
218-254  
255  
Integrity word  
15-8 Checksum  
7-0 Signature  
Key:  
F/V = Fixed/variable content  
F = the content of the word is fixed and does not change. For removable media devices, these values may change when  
media is removed or changed.  
V = the contents of the word is variable and may change depending on the state of the device or the commands executed  
by the device.  
X = the content of the word may be fixed or variable.  
IDLE (E3h)  
This command causes the device to set BSY, enter the Idle mode, clear BSY and generate an interrupt. If sector count is  
non-zero, the automatic power down mode is enabled. If the sector count is zero, the automatic power mode is disabled.  
IDLE IMMEDIATE (E1h)  
This command causes the device to set BSY, enter the Idle(Read) mode, clear BSY and generate an interrupt.  
INITIALIZE DEVICE PARAMETERS (91h)  
This command enables the host to set the number of sectors per track and the number of tracks per heads.  
READ BUFFER (E4h)  
The READ BUFFER command enables the host to read a 512-byte block of data.  
READ DMA (C8h)  
Read data from sectors during Ultra DMA and Multiword DMA transfer. Use the SET FEATURES command to specify the  
mode value. A sector count of zero requests 256 sectors.  
26  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
READ DMA EXT (25h)  
48-bit feature set mandatory command. Read data from sectors during Ultra DMA and Multiword DMA transfer. Use the  
SET FEATURES command to specify the mode value. A sector count of zero requests 65536 sectors.  
READ FPDMA QUEUED (60h)  
NCQ feature set mandatory 48-bit command. This command requests that data to be transferred from the device to the  
host.  
READ LOG EXT (2Fh)  
General purpose logging feature set mandatory 48-bit command. This command returns the specified log to the host.  
Log Address  
Log Name  
Log directory  
NCQ Command Error  
Feature Set  
N/A  
R/W  
RO  
RO  
Access  
GPL  
00h  
10h  
NCQ  
GPL  
READ MULTIPLE (C4h)  
This command performs similarly to the Read Sectors command. Interrupts are not generated on each sector, but on the  
transfer of a block which contains the number of sectors defined by a Set Multiple command.  
READ MULTIPLE EXT (29h)  
48-bit feature set mandatory command. This command performs similarly to the Read Sectors command. Interrupts are  
not generated on each sector, but on the transfer of a block which contains the number of sectors defined by a Set Multiple  
command.  
READ SECTOR(S) (20h/21h)  
This command reads 1 to 256 sectors as specified in the Sector Count register from sectors which is set by Sector number  
register. A sector count of 0 requests 256 sectors. The transfer beings specified in the Sector Number register.  
READ SECTOR(S) EXT (24h)  
48-bit feature set mandatory command. This command reads 1 to 65536 sectors as specified in the Sector Count register  
from sectors which is set by Sector number register. A sector count of zero requests 65536 sectors. The transfer beings  
specified in the Sector Number register.  
27  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
READ VERIFY SECTOR(S) (40h/41h)  
This command verifies one or more sectors on the drive by transferring data from the flash media to the data buffer in the  
drive and verifying that the ECC is correct. This command is identical to the Read Sectors command, except that DRQ is  
never set and no data is transferred to the host.  
READ VERIFY SECTOR(S) EXT (42h)  
48-bit feature set mandatory command. This command verifies one or more sectors on the drive by transferring data from  
the flash media to the data buffer in the drive and verifying that the ECC is correct. This command is identical to the Read  
Sectors command, except that DRQ is never set and no data is transferred to the host.  
RECALIBRATE (10h)  
The current drive performs no processing if it receives this command. It is supported for backward compatibility with  
previous devices.  
SECURITY DISABLE PASSWORD (F6h)  
Disables any previously set user password and cancels the lock. The host transfers 512 bytes of data, as shown in the  
following table, to the drive. The transferred data contains a user or master password, which the drive compares with the  
saved password. If they match, the drive cancels the lock. The master password is still saved. It is re-enabled by issuing  
the SECURITY SET PASSWORD command to re-set a user password.  
SECURITY ERASE PREPARE (F3h)  
This command shall be issued immediately before the Security Erase Unit command to enable erasing and unlocking.  
This command prevents accidental loss of data on the drive.  
SECURITY ERASE UNIT (F4h)  
The host uses this command to transfer 512 bytes of data, as shown in the following table, to the drive. The transferred  
data contains a user or master password, which the drive compares with the saved password. If they match, the drive  
deletes user data, disables the user password, and cancels the lock. The master password is still saved. It is re-enabled  
by issuing the SECURITY SET PASSWORD command to re-set a user password.  
SECURITY FREEZE LOCK (F5h)  
Causes the drive to enter Frozen mode. Once this command has been executed, the following commands to update a lock  
28  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
result in the Aborted Command error:  
• SECURITY SET PASSWORD  
• SECURITY UNLOCK  
• SECURITY DISABLE PASSWORD  
• SECURITY ERASE PREPARE  
• SECURITY ERASE UNIT  
The drive exits from Frozen mode upon a power-off or hard reset. If the SECURITY FREEZE LOCK command is issued  
when the drive is placed in Frozen mode, the drive executes the command, staying in Frozen mode.  
SECURITY SET PASSWORD (F1h)  
This command set user password or master password. The host outputs sector data with PIO data-out protocol to indicate  
the information defined in the following table.  
Security set Password data content  
Word  
0
Content  
Control word  
Bit 0  
Identifier  
0=set user password  
1=set master password  
Bits 1-7  
Bit 8  
Reserved  
Security level  
0=High  
1=Maximum  
Bits 9-15  
Reserved  
1-16  
Password (32 bytes)  
Reserved  
17-255  
SECURITY UNLOCK (F2h)  
This command disable LOCKED MODE of the device. This command transfers 512 bytes of data from the host with PIO  
data-out protocol. The following table defines the content of this information.  
Security Unlock information  
Word  
0
Content  
Control word  
29  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
Bit 0  
Identifier  
0=compare user password  
1=compare master password  
Bits 1-15  
Reserved  
1-16  
Password (32 bytes)  
Reserved  
17-255  
SEEK (7xh)  
This command is effectively a NOP command to the device although it does perform a range check.  
SET FEATURES (EFh)  
This command set parameter to Features register and set drive’s operation. For transfer mode, parameter is set to Sector  
Count register. This command is used by the host to establish or select certain features.  
Features register Value and settable operating mode  
Value  
02h  
Function  
Enable write cache  
03h  
Set transfer mode based on value in Sector Count register.  
Disable read look-ahead feature  
Disable write cache  
55h  
82h  
AAh  
Enable read look-ahead feature  
SET MULTIPLE MODE (C6h)  
This command enables the device to perform READ MULTIPLE and WRITE MULTIPLE operations and establishes the  
block count for these commands.  
SLEEP (E6h)  
This command causes the device to set BSY, enter the Sleep mode, clear BSY and generate an interrupt.  
30  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
SMART Function Set (B0h)  
Performs different processing required for predicting device failures, according to the subcommand specified in the  
Features register. If the Features register contains an unsupported value, the Aborted Command error is returned. If the  
SMART function is disabled, any subcommand other than SMART ENABLE OPERATIONS results in the Aborted  
Command error.  
Code  
D0h  
D1h  
D2h  
D3h  
D5h  
D6h  
D8h  
D9h  
DAh  
Smart Subcommand  
READ DATA  
READ ATTRIBUTE THRESHOLDS  
ENABLE/DISABLE ATTRIBUTE AUTOSAVE  
SAVE ATTRIBUTE VALUES  
Reserved  
Reserved  
ENABLE OPERATIONS  
DISABLE OPERATIONS  
RETURN STATUS  
31  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
SMART READ DATA  
This command returns 512-byte SMART Data Structure to the host with PIO data-in protocol. The register file has to contain  
D0h for Features register, 4Fh for LBA Mid register and C2h for the LBA High register.  
Byte  
0-1  
Description  
Data structure revision number  
1st attribute data  
2-13  
14-361  
362  
2nd-30th Individual attribute data  
Off-line data collection status  
Reserved  
363  
364-365  
Total time in seconds to complete off-line data  
collection  
366  
367  
Reserved  
Off-line data collection capability  
SMART capability  
368-369  
370-385  
386-510  
511  
Reserved  
Reserved  
Data structure Checksum  
Byte 2-361: Individual attribute data  
Byte Description  
Attribute ID  
1-2 Status Flag (0x0002)  
Attribute Value (0x64)  
4-11 Vendor Specific  
0
3
32  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
The attribute ID information is listed in the following table  
Detail Information  
Description  
ID  
Description  
Byte  
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
E5h  
Halt System ID, Flash ID  
Halt System ID  
Flash ID (byte 1)  
Flash ID (byte 2)  
Flash ID (byte 3)  
Flash ID (byte 4)  
Flash ID (byte 5)  
Flash ID (byte 6)  
Flash ID (byte 7)  
E8h  
E9h  
EAh  
Firmware version information  
Year (High Byte, ASCII)  
Year (Low Byte, ASCII)  
Month (High Byte, ASCII)  
Month (Low Byte, ASCII)  
Day (High Byte, ASCII)  
Day (Low Byte, ASCII)  
Channels (binary)  
Banks (binary)  
ECC Fail Record  
ECC fail number  
Row address 3  
Row address 2  
Row address 1  
Channel number of last ECC fail  
Bank number of last ECC fail  
Reserved  
Reserved  
Average Erase Count, Max Erase  
Count  
Average Erase Count (High Byte)  
Average Erase Count  
Average Erase Count (Low Byte)  
Max Erase Count (High Byte)  
33  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
4
5
6
7
0
1
2
3
4
5
6
7
Max Erase Count  
Max Erase Count (Low Byte)  
Reserved  
Reserved  
EBh  
Good Block Count, System Block Count  
Good Block Count (High Byte)  
Good Block Count  
Good Block Count (Low Byte)  
System(Free) Block Count (High  
Byte)  
System(Free) Block Count (Low  
Byte)  
Reserved  
Reserved  
Reserved  
ECh-FFh  
Reserved  
SMART READ ATTRIBUTE THRESHOLD  
This transfers 512 bytes of drive failure threshold data to the host.  
SMART ENABLE/DISABLE ATTRIBUTE AUTOSAVE  
Enables or disables the attribute value autosave function. This command specifies whether the current attribute values are  
automatically saved to the drive when it changes the mode. This setting is maintained when the power is turned on and off.  
SMART SAVE ATTRIBUTE VALUE  
Saves any modified attribute values.  
SMART EXECUTE OFF-LINE IMMEDIATE  
This command of Non-data input causes the controller to immediately initiate the set of activities that collect SMART data  
in a off-line mode and then save data to the Nand flash memory, or execute a selfdiagnostic test routine in either captive or  
off-line mode.  
34  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
SMART ENABL OPERATIONS  
Enables the SMART function. This setting is maintained when the power is turned off and then back on. Once the SMART  
function is enabled, subsequent SMART ENABLE OPERATIONS commands do not affect any parameters.  
SMART DISABLE OPERATIONS  
Disables the SMART function. Upon receiving the command, the drive disables all SMART operations. This setting is  
maintained when the power is turned off and then back on.  
Once this command has been received, all SMART commands other than SMART ENABLE OPERATIONS are aborted  
with the Aborted Command error.  
This command disables all SMART capabilities including any and all timer and event count functions related exclusively to  
this feature. After command acceptance, this controller will disable all SMART operations. SMART data in no longer be  
monitored or saved. The state of SMART is preserved across power cycles.  
SMART RETURN STATUS  
Reports the drive reliability status.  
Values reported when a predicted defect has not been detected:  
Cylinder Low register: 4Fh  
Cylinder High register: C2h  
Values reported when a predicted defect has been detected:  
Cylinder Low register: F4h  
Cylinder High register: 2Ch  
SMART ENABLE/DISABLE AUTOMATIC OFF-LINE  
Enables (when Sector Count register = “F8h”) or disables (Sector Count register = “00h”) the automatic off-line data  
collection function. The automatic collection is disabled if a value of “00h” is set in the Sector Count register before a  
subcommand is issued. If automatic collection is disabled, the drive can still save attribute information during normal  
operation, such as during the power-on/off sequence or error correction sequence. The automatic collection function is  
enabled if a value of “F8h” is set in the Sector Count register before the command is issued. Values other than “00h” and  
“F8h” are vendor-specific.  
35  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
STANDBY (E2h)  
This command causes the device to set BSY, enter the Sleep mode (which corresponds to the ATA “Standby” Mode),  
clear BSY and return the interrupt immediately.  
STANDBY IMMEDIATE (E0h)  
This command causes the drive to set BSY, enter the Sleep mode (which corresponds to the ATA “Standby” Mode), clear  
BSY and return the interrupt immediately.  
WRITE BUFFER (E8h)  
This command enables the host to write the contents of one 512-byte block of data to the device’s buffer.  
WRITE DMA (CAh)  
Write data to sectors during Ultra DMA and Multiword DMA transfer. Use the SET FEATURES command to specify the  
mode value.  
WRITE DMA EXT (35h)  
48-bit feature set mandatory command. Write data to sectors during Ultra DMA and Multiword DMA transfer. Use the SET  
FEATURES command to specify the mode value.  
WRITE DMA FUA EXT (3Dh)  
48-bit feature set mandatory command. This command provides the same function as the WRITE DMA EXT command  
except that regardless of whether volatile and/or non-volatile write caching in the device is enabled or not, the user data  
shall be written to non-volatile media before command completion is reported.  
WRITE FPDMA QUEUED (61h)  
NCQ feature set mandatory 48-bit command. This command causes data to be transferred from the host to the device.  
WRITE MULTIPLE (C5h)  
This command is similar to the Write Sectors command. Interrupts are not presented on each sector, but on the transfer of  
a block which contains the number of sectors defined by Set Multiple command.  
36  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
WRITE MULTIPLE EXT (39h)  
48-bit feature set mandatory command. This command is similar to the Write Sectors command. Interrupts are not  
presented on each sector, but on the transfer of a block which contains the number of sectors defined by Set Multiple  
command.  
WRITE MULTIPLE FUA EXT (CEh)  
48-bit feature set mandatory command. This command provides the same functionality as the WRITE MULTIPLE EXT  
command except that regardless of whether volatile and/or non-volatile write caching in the device is enabled or not, the  
user data shall be written to non-volatile media before command completion is reported.  
WRITE SECTOR(S) (30h/31h)  
Write data to a specified number of sectors (1 to 256, as specified with the Sector Count register) from the specified  
address. Specify “00h” to write 256 sectors.  
WRITE SECTOR(S) EXT (34h)  
48-bit feature set mandatory command. Write data to a specified number of sectors (1 to 65536, as specified with the  
Sector Count register) from the specified address. Specify “00h” to write 65536 sectors.  
37  
Transcend Information Inc.  
V1.08  
TS8GSSD25S-S  
TS16GSSD25S-S/M  
TS32GSSD25S-S/M  
TS64GSSD25S-S/M  
TS128GSSD25S-M  
TS192GSSD25S-M  
2.5” Solid State Disk  
Ordering Information  
The above technical information is based on industry standard data and has been tested to be reliable. However,  
Transcend makes no warranty, either expressed or implied, as to its accuracy and assumes no liability in connection with  
the use of this product. Transcend reserves the right to make changes to the specifications at any time without prior notice.  
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GERMANY  
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