SMSC USB2242 User Manual

USB2242/USB2242I  
Ultra Fast USB 2.0 Memory  
Stick Flash Media Controller  
Datasheet  
PRODUCT FEATURES  
General Description  
Mask Programmable Features  
The SMSC USB2242/USB2242i is a USB 2.0 compliant,  
VID/PID/Language ID  
high speed Bulk Only Mass Storage Class Peripheral  
Controller intended for reading and writing to Memory Stick  
Flash Media Cards.  
28-character Manufacturer ID and Product string  
12-hex digit (max) Serial Number string  
Customizable Vendor specific data LED blink interval or  
duration  
The SMSC USB2242/USB2242i is a fully integrated, single  
chip solution capable of ultra high performance operation.  
Average sustained transfer rates exceeding 35MB/s are  
possible if the media and host can support those rates.  
Provisions to read/write secure media formats is also  
provided.  
Software Features  
Optimized for low latency interrupt handling  
Reduced memory footprint  
Please see the USB2242/USB2242i Software Release  
Notes for additional Software Features.  
Applications  
General Features  
Flash Media Card Reader/Writer  
Printers  
36-pin QFN (6x6mm) lead-free RoHS compliant package  
Hardware-controlled data flow architecture for all self-  
mapped media  
Desktop and Mobile PCs  
Consumer A/V  
Media Players/Viewers  
Vista ReadyBoost  
Pipelined hardware support for access to non-self-  
mapped media  
TM  
Compatible with Microsoft Vista, Windows XP, Windows  
ME, Windows 2K SP4, Apple OSx, and Linux Mass  
Storage Class Drivers  
Product name with “i” denotes the version that supports  
the industrial temperature range of -40ºC to 85ºC  
Support included for secure media format on a licensed,  
customized basis  
Sony MagicGateTM  
Hardware Features  
Single Chip Flash Media Reader/Writer  
Memory Stick Specification 1.43  
Memory Stick Pro Format Specification 1.02  
Memory Stick Pro-HG Duo Format Specification 1.01  
Memory Stick, MS Duo, HS-MS, MS Pro-HG, MS Pro  
Extended configuration options  
Socket switch polarities, etc.  
Media Activity LED  
GPIO configuration and polarity  
Up to 8 GPIOs for special function use: LED indicators,  
power control to memory devices, etc. The number of  
actual GPIO’s depends on the implementation  
configuration used.  
One GPIO with up to 200 mA drive  
On Board 24MHz Crystal Driver Circuit  
Internal Card Power FET  
200mA  
"Fold-back" short circuit current protected  
8051 8-bit microprocessor  
60MHz - single cycle execution  
64KB ROM; 14KB RAM  
Internal Regulator for 1.8V core operation  
Optimized pinout improves signal routing, easing  
implementation and allowing for improved signal integrity  
SMSC USB2242/USB2242i  
DATASHEET  
Revision 1.0 (05-27-08)  
Ultra Fast USB 2.0 Memory Stick Flash Media Controller  
Datasheet  
Table of Contents  
SMSC USB2242/USB2242i  
3
Revision 1.0 (05-27-08)  
DATASHEET  
Ultra Fast USB 2.0 Memory Stick Flash Media Controller  
Datasheet  
Chapter 1 Acronyms  
MS: Memory Stick  
MSC: Memory Stick Controller  
PLL: Phase-Locked Loop  
QFN: Quad Flat no Leads  
RoHS: Restriction of Hazardous Substances Directive  
SIE: Serial Interface Engine  
*Note: In order to develop, make, use, or sell readers and/or other products using or incorporating any of the SMSC devices made  
the subject of this document or to use related SMSC software programs, technical information and licenses under patent and other  
intellectual property rights from or through various persons or entities, including without limitation media standard companies,  
forums, and associations, and other patent holders may be required. These media standard companies, forums, and associations  
include without limitation the following: Sony Corporation (Memory Stick, Memory Stick Pro); SD3 LLC (Secure Digital); MultiMedia  
Card Association (MultiMediaCard); the SSFDC Forum (SmartMedia); the Compact Flash Association (Compact Flash); and Fuji  
Photo Film Co., Ltd., Olympus Optical Co., Ltd., and Toshiba Corporation (xD-Picture Card). SMSC does not make such licenses  
or technical information available; does not promise or represent that any such licenses or technical information will actually be  
obtainable from or through the various persons or entities (including the media standard companies, forums, and associations), or  
with respect to the terms under which they may be made available; and is not responsible for the accuracy or sufficiency of, or  
otherwise with respect to, any such technical information.  
SMSC's obligations (if any) under the Terms of Sale Agreement, or any other agreement with any customer, or otherwise, with  
respect to infringement, including without limitation any obligations to defend or settle claims, to reimburse for costs, or to pay  
damages, shall not apply to any of the devices made the subject of this document or any software programs related to any of such  
devices, or to any combinations involving any of them, with respect to infringement or claimed infringement of any existing or future  
patents related to solid state disk or other flash memory technology or applications ("Solid State Disk Patents"). By making any  
purchase of any of the devices made the subject of this document, the customer represents, warrants, and agrees that it has  
obtained all necessary licenses under then-existing Solid State Disk Patents for the manufacture, use and sale of solid state disk  
and other flash memory products and that the customer will timely obtain at no cost or expense to SMSC all necessary licenses  
under Solid State Disk Patents; that the manufacture and testing by or for SMSC of the units of any of the devices made the subject  
of this document which may be sold to the customer, and any sale by SMSC of such units to the customer, are valid exercises of  
the customer's rights and licenses under such Solid State Disk Patents; that SMSC shall have no obligation for royalties or otherwise  
under any Solid State Disk Patents by reason of any such manufacture, use, or sale of such units; and that SMSC shall have no  
obligation for any costs or expenses related to the customer's obtaining or having obtained rights or licenses under any Solid State  
Disk Patents.  
SMSC MAKES NO WARRANTIES, EXPRESS, IMPLIED, OR STATUTORY, IN REGARD TO INFRINGEMENT OR OTHER  
VIOLATION OF INTELLECTUAL PROPERTY RIGHTS. SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES  
AGAINST INFRINGEMENT AND THE LIKE.  
No license is granted by SMSC expressly, by implication, by estoppel or otherwise, under any patent, trademark, copyright, mask  
work right, trade secret, or other intellectual property right.  
**To obtain this software program the appropriate SMSC Software License Agreement must be executed and in effect. Forms of  
these Software License Agreements may be obtained by contacting SMSC.  
Revision 1.0 (05-27-08)  
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SMSC USB2242/USB2242i  
DATASHEET  
 
Ultra Fast USB 2.0 Memory Stick Flash Media Controller  
Datasheet  
Chapter 2 Block Diagram  
AUTO_  
CBW  
PROC  
USB  
Host  
FMI  
Media  
Interface  
SIE  
CTL  
BUS  
INTFC  
BUS  
INTFC  
FMDU  
CTL  
PHY  
MS  
EP0 TX  
EP0 RX  
BUS  
INTFC  
RAM  
4K  
total  
EP1 RX  
EP1 TX  
EP2 RX  
EP2 TX  
XDATA BRIDGE  
+ BUS ARBITER  
PWR_FET1  
GPIO10(CARD_PWR)  
GPIOs  
7 pins  
RAM  
10KB  
Program  
Memory  
I/O Bus  
ADDR  
MAP  
ROM  
64KB  
Clock  
Generation and  
Control  
SFR  
RAM  
8051  
PROCESSOR  
Figure 2.1 USB2242/USB2242i Block Diagram  
SMSC USB2242/USB2242i  
7
Revision 1.0 (05-27-08)  
DATASHEET  
   
Ultra Fast USB 2.0 Memory Stick Flash Media Controller  
Datasheet  
Chapter 3 Pin Table  
3.1  
36-Pin Package  
Table 3.1 USB2242/2242i 36-Pin QFN Package  
MS INTERFACE (11 PINS)  
MS_D0  
MS_D4  
MS_BS  
MS_D1  
MS_D2  
MS_D6  
MS_D3  
MS_D7  
MS_D5  
MS_SCLK  
GPIO12 (MS_INS)  
USB INTERFACE (7 PINS)  
USB+  
USB-  
RBIAS  
XTAL1 (CLKIN)  
XTAL2  
VDDA33  
VDD18PLL  
MISC (14 Pins)  
GPIO1 (LED1)  
GPIO2 / RXD / SDA  
GPIO4  
GPIO7 / TXD / SCK /  
MS_SKT_SEL  
GPIO10 (CRD_PWR)  
TEST  
GPIO14  
nRESET  
GPIO15  
(5) NC  
DIGITAL, POWER (4 PINS)  
(3) VDD33  
VDD18  
TOTAL 36  
Revision 1.0 (05-27-08)  
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SMSC USB2242/USB2242i  
DATASHEET  
     
Ultra Fast USB 2.0 Memory Stick Flash Media Controller  
Datasheet  
Chapter 4 Pin Configuration  
28  
29  
30  
31  
32  
33  
34  
35  
36  
18  
17  
16  
15  
14  
13  
12  
11  
10  
nRESET  
NC  
TEST  
GPIO4  
NC  
MS_SCLK  
GPIO7 / TXD / SCK / MS_SKT_SEL  
NC  
SMSC  
USB2242/2242i  
(Top View QFN-36)  
XTAL2  
XTAL1 (CLKIN)  
VDD18PLL  
RBIAS  
VDD33  
VDD18  
NC  
Thermal Slug  
(must be connected to VSS)  
MS_D0  
MS_D1  
VDDA33  
Indicates pins on the bottom of the device.  
Figure 4.1 USB2242/USB2242i 36 Pin QFN Diagram  
SMSC USB2242/USB2242i  
9
Revision 1.0 (05-27-08)  
DATASHEET  
   
Ultra Fast USB 2.0 Memory Stick Flash Media Controller  
Datasheet  
Chapter 5 Pin Descriptions  
This section provides a detailed description of each signal. The signals are arranged in functional  
groups according to their associated interface.  
The “n” symbol in the signal name indicates that the active, or asserted, state occurs when the signal  
is at a low voltage level. When “n” is not present before the signal name, the signal is asserted at the  
high voltage level.  
The terms assertion and negation are used exclusively. This is done to avoid confusion when working  
with a mixture of “active low” and “active high” signals. The term assert, or assertion, indicates that a  
signal is active, independent of whether that level is represented by a high or low voltage. The term  
negate, or negation, indicates that a signal is inactive.  
5.1  
Pin Descriptions  
Table 5.2 USB2242/2242i 36-Pin QFN Pin Descriptions  
BUFFER  
NAME  
SYMBOL  
36-PIN QFN  
TYPE  
DESCRIPTION  
MEMORY STICK INTERFACE  
MS System Data  
In/Out  
MS_D[7:0]  
8
7
4
I/O12PD These pins are the bi-directional data  
signals for the MS device. In serial mode,  
the most significant bit (MSB) of each byte  
is transmitted first by either MSC or MS  
device on MS_D0. MS_D0, MS_D2, and  
MS_D3 have weak pull-down resistors.  
MS_D1 has a pull down resistor if it is in  
parallel mode, otherwise it is disabled. In  
4 or 8 bit parallel mode, there is a weak  
pull-down resistor on all MS_D7 - 0  
5
23  
20  
10  
11  
signals. The resistors are controlled by  
MSC_SYSTEM_0, MSC_MODE_CTL and  
MSC_PRO_HG registers.  
MS Bus State  
MS_BS  
9
O12  
This pin is connected to the BS pin of the  
MS device.  
It is used to control the Bus States 0, 1, 2  
and 3 (BS0, BS1, BS2 and BS3) of the MS  
device.  
MS System CLK  
MS_SCLK  
30  
24  
O12  
IPU  
This pin is an output clock signal to the  
MS device.  
The clock frequency is software  
configurable.  
MS Card Insertion  
GPIO  
GPIO12  
(MS_INS)  
This is a GPIO designated as the Memory  
TM  
Stick  
card detection pin.  
USB INTERFACE  
USB Bus Data  
USB+  
USB-  
2
3
I/O-U  
These pins connect to the USB bus data  
signals.  
Revision 1.0 (05-27-08)  
10  
SMSC USB2242/USB2242i  
DATASHEET  
     
Ultra Fast USB 2.0 Memory Stick Flash Media Controller  
Datasheet  
Table 5.2 USB2242/2242i 36-Pin QFN Pin Descriptions (continued)  
BUFFER  
TYPE  
NAME  
SYMBOL  
RBIAS  
36-PIN QFN  
DESCRIPTION  
USB Transceiver  
Bias  
35  
I-R  
A 12.0k , 1.0% resistor is attached from  
VSSA to this pin in order to set the  
transceiver's internal bias currents.  
24MHz Crystal or  
external clock  
input  
XTAL1 (CLKIN)  
XTAL2  
33  
32  
ICLKx  
This pin can be connected to one terminal  
of the crystal or it can be connected to an  
external 24 clock when a crystal is not  
used.  
24MHz Crystal  
OCLKx  
This is the other terminal of the crystal, or  
it can be left open when an external clock  
source is used to drive XTAL1(CLKIN). It  
may not be used to drive any external  
circuitry other than the crystal circuit.  
3.3V Analog  
Power  
VDDA33  
36  
34  
3.3V Analog Power  
1.8V PLL Power  
VDD18PLL  
This pin is the 1.8V Power for the PLL.  
+1.8V Filtered analog power for internal  
PLL. This pin must have a 1.0μF(or  
greater) ±20% (ESR <0.1Ω) capacitor to  
VSS.  
MISC  
General Purpose  
I/O  
GPIO1 (LED1)  
1
I/O12  
This pin may be used either as input, edge  
sensitive interrupt input, or output.  
In addition, as an output, the GPIO1 can  
use output controlled by the LED1_GPIO1  
register.  
General Purpose  
I/O  
GPIO2 / RXD /  
SDA  
27  
I/O12  
I
GPIO: This pin may be used either as  
input, edge sensitive interrupt input, or  
output.  
RXD: In addition to the above, the signal  
can be used as input to the RXD of UART  
in the device, when the TXD_RXD_SEL  
bit in UTIL_CONFIG1 register is cleared to  
"0".  
I/O12  
I/O12  
SDA: This is the data pin when used with  
an external serial EEPROM.  
General Purpose  
I/O  
GPIO4  
29  
This pin may be used either as input, edge  
sensitive interrupt input, or output.  
SMSC USB2242/USB2242i  
11  
Revision 1.0 (05-27-08)  
DATASHEET  
Ultra Fast USB 2.0 Memory Stick Flash Media Controller  
Datasheet  
Table 5.2 USB2242/2242i 36-Pin QFN Pin Descriptions (continued)  
BUFFER  
TYPE  
NAME  
SYMBOL  
36-PIN QFN  
DESCRIPTION  
General Purpose  
I/O  
GPIO7 /  
31  
I/O12  
GPIO: This pin may be used either as  
input, edge sensitive interrupt input, or  
output.  
TXD /  
SCK /  
MS_SKT_SEL  
O12  
TXD: In addition, as an output, the GPIO7  
can be used as an output TXD of UART in  
the device, when the GPIO2/TXD bit in  
UTL_CONFIG register is set to "1"  
O12  
I
SCK: This is the clock output when used  
with an external EEPROM.  
MS_SKT_SEL: On the positive edge of  
nRESET, this pin is sampled to determine  
the Memory Stick socket size.  
1 = 8 bit  
0 = 4 bit  
General Purpose  
I/O  
GPIO10  
(CRD_PWR)  
21  
I/O200  
GPIO: This pin may be used either as  
input, edge sensitive interrupt input, or  
output.  
CRD_PWR: Card Power drive of 3.3V @  
either 100mA or 200mA.  
General Purpose  
I/O  
GPIO14  
GPIO15  
nRESET  
19  
26  
18  
I/O12  
I/O12  
IS  
This pin may be used either as input, edge  
sensitive interrupt input, or output.  
General Purpose  
I/O  
This pin may be used either as input, edge  
sensitive interrupt input, or output.  
RESET Input  
TEST Input  
No Connects  
This active low signal is used by the  
system to reset the chip. The active low  
pulse should be at least 1μs wide.  
TEST  
NC  
28  
I
This signal is used for testing the chip.  
User should normally tie this pin low  
externally if the test function is not used.  
12  
15  
16  
17  
25  
No Connect. No trace or signal should be  
routed/attached to these pins.  
DIGITAL / POWER  
+1.8V Core power VDD18  
13  
+1.8V core power. This pin must have a  
1.0μF (or greater) ±20% (ESR <0.1Ω)  
capacitor to VSS.  
3.3V Power &  
VDD33  
VSS  
6
14  
22  
3.3V Power & Regulator Input.  
Regulator Input.  
Ground  
SLUG  
Ground Reference  
Revision 1.0 (05-27-08)  
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SMSC USB2242/USB2242i  
DATASHEET  
Ultra Fast USB 2.0 Memory Stick Flash Media Controller  
Datasheet  
5.2  
Buffer Type Descriptions  
Table 5.3 USB2242/USB2242i Buffer Type Descriptions  
DESCRIPTION  
BUFFER  
I
Input.  
IPU  
IS  
Input with internal weak pull-up resistor.  
Input with Schmitt trigger.  
I/O12  
I/O200  
Input/Output buffer with 12mA sink and 12mA source.  
Input/Output buffer 12mA with FET disabled, 100/200mA source only when the FET is  
enabled.  
I/O12PD  
Input/Output buffer with 12mA sink and 12mA source, with an internal weak pull-down  
resistor.  
O12  
Output buffer with 12mA source.  
XTAL clock input.  
ICLKx  
OCLKx  
I/O-U  
I-R  
XTAL clock output.  
Analog Input/Output Defined in USB specification.  
RBIAS.  
SMSC USB2242/USB2242i  
13  
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Ultra Fast USB 2.0 Memory Stick Flash Media Controller  
Datasheet  
Chapter 6 Pin Reset State Table  
Hardware  
Firmware  
Initialization  
Operational  
Voltage  
Signal (v)  
RESET  
RESET  
VDD33  
Time  
(t)  
VSS  
Figure 6.1 Pin Reset States  
LEGEND  
yes  
--  
hardware enables function  
hardware disables function  
hardware disables output driver  
hardware enables pullup  
z
pu  
pd  
hardware enables pulldown  
hw  
hardware controls function, but state is protocol dependent  
firmware controls function through registers  
hardware supplies power through pin, applicable only to CARD_PWR pins  
hardware disables pad  
(fw)  
VDD  
none  
Figure 6.2 Legend for Pin Reset States Table  
Revision 1.0 (05-27-08)  
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SMSC USB2242/USB2242i  
DATASHEET  
     
Ultra Fast USB 2.0 Memory Stick Flash Media Controller  
Datasheet  
6.1  
36-Pin Reset States  
Table 6.1 USB2242/USB2242i Pin Reset States  
Post-Reset State  
MS Mode  
RESET STATE  
OUT-  
PUT  
PU/  
PD  
IN-  
PUT  
OUT-  
PUT  
PU/  
PD  
IN-  
PUT  
PIN  
PIN NAME  
FUNCTION  
FUNCTION  
8
MS_D7  
MS_D6  
none  
none  
none  
none  
SD_WP  
none  
none  
none  
none  
none  
none  
GPIO  
GPIO  
GPIO  
GPIO  
GPIO  
GPIO  
z
z
z
z
0
z
z
z
z
z
z
z
z
z
0
0
0
--  
--  
--  
--  
MS_D7  
MS_D6  
MS_D4  
MS_D5  
MS_SCLK  
none  
hw  
hw  
hw  
hw  
hw  
z
pd  
pd  
pd  
hw  
hw  
--  
yes  
yes  
yes  
yes  
--  
7
5
MS_D4  
--  
--  
4
MS_D5  
--  
--  
30  
25  
23  
20  
9
MS_SCLK  
NC  
--  
--  
--  
--  
--  
MS_D3  
--  
--  
MS_D3  
MS_D2  
MS_BS  
MS_D1  
MS_D0  
hw  
hw  
hw  
hw  
hw  
pd  
pd  
hw  
hw  
pd  
yes  
yes  
--  
MS_D2  
--  
--  
MS_BS  
--  
--  
10  
11  
19  
26  
24  
27  
29  
31  
MS_D1  
--  
--  
yes  
yes  
MS_D0  
--  
--  
GPIO14  
pu  
pu  
pu  
--  
yes  
yes  
yes  
--  
GPIO15  
GPIO12 (MS_INS)  
GPIO2 / RXD / SDA  
GPIO4  
--  
--  
GPIO7 / TXD / SCK /  
MS_SKT_SEL  
--  
--  
21  
28  
18  
1
GPIO10 (CARD_PWR)  
GPIO  
TEST  
nRESET  
GPIO1  
none  
z
z
z
0
z
z
z
z
z
z
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
yes  
yes  
--  
TEST  
nRESET  
GPIO1 (LED1)  
NC  
16  
12  
17  
15  
2
--  
none  
none  
none  
none  
z
z
z
z
--  
--  
--  
--  
--  
--  
--  
--  
NC  
none  
--  
NC  
none  
--  
NC  
none  
--  
USB+  
USB+  
USB-  
--  
3
USB-  
--  
35  
33  
32  
RBIAS  
XTAL1 (CLKIN)  
XTAL2  
SMSC USB2242/USB2242i  
15  
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Ultra Fast USB 2.0 Memory Stick Flash Media Controller  
Datasheet  
Chapter 7 DC Parameters  
7.1  
Maximum Guaranteed Ratings  
PARAMETER  
SYMBOL  
MIN  
MAX  
UNITS  
°C  
COMMENTS  
Storage  
Temperature  
T
-55  
150  
325  
4.0  
A
Lead  
Temperature  
°C  
V
Soldering < 10 seconds  
3.3V supply  
voltage  
V
V
-0.5  
-0.5  
DD33,  
DDA33  
Voltage on  
USB+ and  
USB- pins  
(3.3V supply voltage + 2) 6  
V
Voltage on  
GPIO10  
-0.5  
V
+ 0.3  
V
When internal power FET  
DD33  
operation of this pin is enabled,  
this pin may be simultaneously  
shorted to ground or any  
voltage up to 3.63V indefinitely,  
without damage to the device  
as long as V  
and V  
DD33  
DDA33  
are less than 3.63V and T is  
A
o
less than 70 C.  
Voltage on any  
signal pin  
-0.5  
-0.5  
-0.5  
V
+ 0.3  
+ 0.3  
V
V
V
DD33  
Voltage on  
XTAL1  
4.0  
Voltage on  
XTAL2  
V
DD18  
Note 7.1 Stresses above the specified parameters may cause permanent damage to the device.  
This is a stress rating only and functional operation of the device at any condition above  
those indicated in the operation sections of this specification is not implied.  
Note 7.2 When powering this device from laboratory or system power supplies, it is important that  
the Absolute Maximum Ratings not be exceeded or device failure can result. Some power  
supplies exhibit voltage spikes on their outputs when the AC power is switched on or off.  
In addition, voltage transients on the AC power line may appear on the DC output. When  
this possibility exists, it is suggested that a clamp circuit be used.  
Revision 1.0 (05-27-08)  
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Ultra Fast USB 2.0 Memory Stick Flash Media Controller  
Datasheet  
Voltage  
VDD33  
tRT  
3.3V  
100%  
90%  
10%  
VSS  
t90%  
Time  
t10%  
Figure 7.1 Supply Rise Time Model  
7.2  
Recommended Operating Conditions  
PARAMETER  
SYMBOL  
MIN  
MAX  
UNITS  
COMMENTS  
Operating  
Temperature  
Commercial Part  
Industrial Part  
T
0
70  
85  
3.6  
°C  
°C  
V
A
T
-40  
3.0  
A
3.3V supply voltage  
V
V
DD33,  
DDA33  
3.3V supply rise time  
t
0
400  
5.5  
μs  
RT  
Voltage on  
USB+ and USB- pins  
-0.3  
V
If any 3.3V supply voltage drops  
below 3.0V, then the MAX  
becomes:  
(3.3V supply voltage) + 0.5 5.5  
Voltage on any signal  
pin  
-0.3  
V
V
DD33  
Voltage on XTAL1  
Voltage on XTAL2  
-0.3  
-0.3  
V
V
V
V
DDA33  
DD18  
Note 7.3 A 3.3V regulator with an output tolerance of 1% must be used if the output of the internal  
power FET’s must support a 5% tolerance.  
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7.3  
DC Electrical Characteristics  
PARAMETER  
SYMBOL  
MIN  
TYP  
MAX  
UNITS  
COMMENTS  
I, IPU, IPD Type Input Buffer  
Low Input Level  
V
0.8  
V
V
TTL Levels  
ILI  
High Input Level  
V
2.0  
IHI  
Pull Down  
PD  
PU  
72  
58  
μA  
μA  
Pull Up  
IS Type Input Buffer  
Low Input Level  
High Input Level  
V
0.8  
V
V
TTL Levels  
ILI  
V
2.0  
IHI  
Hysteresis  
V
420  
mV  
HYSI  
ICLK Input Buffer  
Low Input Level  
High Input Level  
Input Leakage  
V
0.5  
V
V
ILCK  
V
1.4  
-10  
IHCK  
I
+10  
μA  
IL  
V
= 0 to V  
DD33  
IN  
Input Leakage  
(All I and IS buffers)  
Low Input Leakage  
I
-10  
-10  
+10  
+10  
μA  
V
V
= 0  
IL  
IN  
High Input Leakage  
I
μA  
= V  
IH  
IN  
DD33  
O12 Type Buffer  
Low Output Level  
High Output Level  
Output Leakage  
V
0.4  
V
V
I
V
= 12mA @  
OL  
OL  
OH  
OL  
= 3.3V  
DD33  
V
V
- 0.4  
I
V
= -12mA @  
OH  
DD33  
= 3.3V  
DD33  
I
-10  
+10  
μA  
V
= 0 to V  
IN DD33  
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PARAMETER  
SYMBOL  
MIN  
TYP  
MAX  
UNITS  
COMMENTS  
I/O12, I/O12PU & I/O12PD Type  
Buffer  
Low Output Level  
High Output Level  
Output Leakage  
V
0.4  
V
V
I
V
= 12mA @  
OL  
OL  
OH  
OL  
= 3.3V  
DD33  
V
V
- 0.4  
I
V
= -12mA @  
OH  
DD33  
= 3.3V  
DD33  
I
-10  
+10  
µA  
V
= 0 to V  
IN DD33  
Pull Down  
Pull Up  
PD  
PU  
72  
58  
μA  
μA  
IO-U  
I-R  
I/O200  
Integrated Power FET for  
GPIO10  
High Output Current Mode  
I
I
200  
100  
mA  
mA  
Vdrop  
Vdrop  
= 0.46V  
= 0.23V  
OUT  
FET  
Low Output Current Mode  
OUT  
FET  
On Resistance  
R
t
2.1  
Ω
I
= 70mA  
FET  
DSON  
Output Voltage Rise Time  
Supply Current Unconfigured  
Supply Current Active  
Full Speed  
800  
90  
μs  
C
= 10μF  
DSON  
LOAD  
I
80  
mA  
CCINIT  
I
I
110  
135  
140  
165  
mA  
mA  
CC  
CC  
High Speed  
Supply Current Suspend  
Industrial Temperature Suspend  
I
350  
350  
700  
900  
µA  
µA  
CSBY  
I
CSBYI  
Note 7.4 Output leakage is measured with the current pins in high impedance.  
Note 7.5 See The USB 2.0 Specification, Chapter 7, for USB DC electrical characteristics  
Note 7.6 RBIAS is a 3.3V tolerant analog pin.  
Note 7.7 Output current range is controlled by program software, software disables FET during short  
circuit condition.  
Note 7.8 The assignment of each Integrated Card Power FET to a designated Card Connector is  
controlled by both firmware and the specific board implementation. Firmware will default to  
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Note 7.9 The 3.3V supply should be at least at 75% of its operating condition before the 1.8V supply  
is allowed to ramp up.  
7.4  
Capacitance  
T
= 25°C; fc = 1MHz; V  
V
= 1.8V  
A
DD, DDP  
Table 7.1 Pin Capacitance  
LIMITS  
PARAMETER  
SYMBOL  
MIN  
TYP  
MAX  
UNIT  
TEST CONDITION  
Clock Input Capacitance  
C
2
pF  
All pins (except USB pins  
and pins under test) are tied  
to AC ground.  
XTAL  
Input Capacitance  
Output Capacitance  
C
10  
20  
pF  
pF  
IN  
C
OUT  
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Chapter 8 AC Specifications  
8.1  
Oscillator/Clock  
Crystal: Parallel Resonant, Fundamental Mode, 24 MHz ± 100ppm.  
External Clock: 50% Duty cycle ± 10%, 24 MHz ± 100ppm, Jitter < 100ps rms.  
XTAL1  
(CS1 =  
CB + CXTAL  
)
C1  
1Meg  
Crystal  
CL  
C2  
XTAL2  
(CS2 =  
CB + CXTAL  
)
Figure 8.1 Typical Crystal Circuit  
Note:  
C
equals total board/trace capacitance.  
B
(C1 + CS1) x (C2 + CS2)  
(C1 + CS1 + C2 + CS2)  
CL  
=
Figure 8.2 Formula to Find Value of C and C  
1
2
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Chapter 9 Package Outline  
Figure 9.1 USB2242/USB2242i 36-QFN, 6x6mm Body, 0.5mm Pitch  
   
Ultra Fast USB 2.0 Memory Stick Flash Media Controller  
Datasheet  
Chapter 10 GPIO Usage  
Table 10.1 USB2242/USB2242i GPIO Usage (ROM Rev 0x00)  
NAME  
ACTIVE LEVEL  
SYMBOL  
DESCRIPTION AND NOTE  
LED indicator  
GPIO1  
GPIO2  
H
H
LED1  
RXD / SDA  
Receive Port of Debugger / Serial  
EEPROM Data  
GPIO4  
GPIO7  
USER  
H
GPIO  
User defined  
TXD / SCK / MS_SKT_SEL  
Transmit Port of Debugger / Serial  
EEPROM Clock / Memory Stick Socket  
(1 = 8 bit; 0 = 4 bit)  
GPIO10  
GPIO12  
GPIO14  
GPIO15  
L
CRD_PWR  
MS_INS  
GPIO  
Card Power Control  
Memory Stick Card Insertion  
User defined  
L
USER  
USER  
GPIO  
User defined  
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