SMSC Network Card USB2244 User Manual

USB2244/USB2244I  
Ultra Fast USB 2.0 SD/MMC  
Flash Media Controller  
Datasheet  
PRODUCT FEATURES  
General Description  
Mask Programmable Features  
The SMSC USB2244/USB2244i 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 SD/MMC 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 USB2244/USB2244i 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 USB2244/USB2244i Software Release  
Notes for additional Software Features.  
Applications  
Flash Media Card Reader/Writer  
Printers  
Desktop and Mobile PCs  
Consumer A/V  
Media Players/Viewers  
TM  
Vista ReadyBoost  
Compatible with Microsoft Vista, Windows XP, Windows  
ME, Windows 2K SP4, Apple OSx, and Linux Mass  
Storage Class Drivers  
SD Secure  
Hardware Features  
Single Chip Flash Media Reader/Writer  
Secure Digital 2.0  
HS-SD, HC-SD, TransFlash™ and reduced form factor  
media  
MultiMediaCard Specification 4.2  
1/4/8 bit MMC  
SDIO and MMC Streaming Mode support  
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 USB2244/USB2244i  
DATASHEET  
Revision 1.0 (05-27-08)  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Ultra Fast USB 2.0 SD/MMC Flash Media Controller  
Datasheet  
Table of Contents  
SMSC USB2244/USB2244i  
3
Revision 1.0 (05-27-08)  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Ultra Fast USB 2.0 SD/MMC Flash Media Controller  
Datasheet  
Chapter 1 Acronyms  
MMC: MultiMediaCard  
PLL: Phase-Locked Loop  
QFN: Quad Flat no Leads  
RoHS: Restriction of Hazardous Substances Directive  
SD: Secure Digital  
SDIO: Secure Digital Input/Output  
SDC: Secure Digital Controllerl  
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)  
6
SMSC USB2244/USB2244i  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Ultra Fast USB 2.0 SD/MMC Flash Media Controller  
Datasheet  
Chapter 2 Block Diagram  
AUTO_  
CBW  
PROC  
USB  
Host  
FMI  
Media  
Interface  
SIE  
CTL  
SD/  
MMC  
BUS  
INTFC  
BUS  
INTFC  
FMDU  
CTL  
PHY  
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 USB2244/USB2244i Block Diagram  
SMSC USB2244/USB2244i  
7
Revision 1.0 (05-27-08)  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Ultra Fast USB 2.0 SD/MMC Flash Media Controller  
Datasheet  
Chapter 3 Pin Table  
3.1  
36-Pin Package  
Table 3.1 USB2244/2244i 36-Pin QFN Package  
SD/MMC INTERFACE (12 Pins)  
SD_D0  
SD_D4  
SD_D1  
SD_D5  
SD_D2  
SD_D3  
SD_D7  
SD_D6  
SD_CLK  
SD_CMD  
SD_WP  
GPIO15 (SD_nCD)  
USB INTERFACE (7 PINS)  
USB+  
USB-  
RBIAS  
XTAL1 (CLKIN)  
XTAL2  
VDDA33  
VDD18PLL  
MISC (13 PINS)  
GPIO1 (LED1)  
GPIO10 (CRD_PWR)  
TEST  
GPIO2 / RXD / SDA  
GPIO12  
GPIO4  
GPIO7 / TXD / SCK  
(4) NC  
GPIO14  
nRESET  
DIGITAL, POWER (4 PINS)  
(3)VDD33  
VDD18  
TOTAL 36  
Revision 1.0 (05-27-08)  
8
SMSC USB2244/USB2244i  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
Ultra Fast USB 2.0 SD/MMC 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  
SD_WP  
NC  
GPIO7 / TXD / SCK  
XTAL2  
SMSC  
USB2244/2244i  
(Top View QFN-36)  
VDD33  
VDD18  
NC  
XTAL1 (CLKIN)  
VDD18PLL  
RBIAS  
Thermal Slug  
(must be connected to VSS)  
SD_CMD  
SD_D5  
VDDA33  
Indicates pins on the bottom of the device.  
Figure 4.1 USB2244/USB2244i 36 Pin QFN Diagram  
SMSC USB2244/USB2244i  
9
Revision 1.0 (05-27-08)  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Ultra Fast USB 2.0 SD/MMC 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 USB2244/2244i 36-Pin QFN Pin Descriptions  
36-PIN  
QFN  
BUFFER  
TYPE  
NAME  
SYMBOL  
DESCRIPTION  
SECURE DIGITAL INTERFACE  
SD Data  
SD_D[7:0]  
7
8
10  
20  
23  
25  
4
I/O12PU  
The bi-directional signals should have weak  
pull-up resistors. The register can be  
controlled by: SD_MMC_INTF_EN bit of  
SDC_MODE_CTL  
5
SD Clock  
SD_CLK  
SD_CMD  
9
O12  
This is an output clock signal to SD/MMC  
device.  
The clock frequency is software configurable.  
SD Command  
11  
I/O12PU  
This is a bi-directional signal that connects to  
the CMD signal of SD/MMC device. The bi-  
directional signal should have an internal weak  
pull-up resistor.  
The pull-up register can be controlled by:  
SD_MMC_INTF_EN bit of SDC_MODE CTL  
SD Write Protect SD_nWP  
30  
26  
I/O12  
I/O12  
This pin is designated as the Secure Digital  
card mechanical write detect pin.  
SD Card Detect  
GPIO  
GPIO15  
(SD_nCD)  
This is a GPIO designated as the Secure  
Digital card detection pin.  
USB INTERFACE  
USB Bus Data  
USB+  
USB-  
2
3
I/O-U  
These pins connect to the USB bus data  
signals.  
USB Transceiver  
Bias  
RBIAS  
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.  
Revision 1.0 (05-27-08)  
10  
SMSC USB2244/USB2244i  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
Ultra Fast USB 2.0 SD/MMC Flash Media Controller  
Datasheet  
Table 5.2 USB2244/2244i 36-Pin QFN Pin Descriptions (continued)  
36-PIN  
QFN  
BUFFER  
TYPE  
NAME  
SYMBOL  
XTAL1  
DESCRIPTION  
24MHz Crystal  
or external clock  
input  
33  
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.  
(CLKIN)  
24MHz Crystal  
XTAL2  
32  
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  
I/O12  
O12  
SDA: This is the data pin when used with an  
external serial EEPROM.  
General Purpose  
I/O  
GPIO4  
29  
31  
This pin may be used either as input, edge  
sensitive interrupt input, or output.  
General Purpose  
I/O  
GPIO7 /  
TXD /  
SCK  
GPIO: This pin may be used either as input,  
edge sensitive interrupt input, or output.  
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  
SCK: This is the clock output when used with  
an external EEPROM.  
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  
nRESET  
19  
18  
I/O12  
IS  
This pin may be used either as input, edge  
sensitive interrupt input, or output.  
RESET Input  
This active low signal is used by the system to  
reset the chip. The active low pulse should be  
at least 1μs wide.  
SMSC USB2244/USB2244i  
11  
Revision 1.0 (05-27-08)  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Ultra Fast USB 2.0 SD/MMC Flash Media Controller  
Datasheet  
Table 5.2 USB2244/2244i 36-Pin QFN Pin Descriptions (continued)  
36-PIN  
QFN  
BUFFER  
TYPE  
NAME  
SYMBOL  
TEST  
DESCRIPTION  
TEST Input  
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.  
No Connects  
NC  
No Connect. No trace or signal should be  
routed/attached to these pins.  
DIGITAL / POWER  
+1.8V Core  
power  
VDD18  
13  
All VDD18 pins must be connected together on  
the circuit board.  
+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  
5.2  
Buffer Type Descriptions  
Table 5.3 USB2244/USB2244i Buffer Type Descriptions  
DESCRIPTION  
BUFFER  
I
Input.  
IS  
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/O12PU  
O12  
Input/Output buffer with 12mA sink and 12mA source with a pull-up resistor.  
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.  
Revision 1.0 (05-27-08)  
12  
SMSC USB2244/USB2244i  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Ultra Fast USB 2.0 SD/MMC 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  
SMSC USB2244/USB2244i  
13  
Revision 1.0 (05-27-08)  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
Ultra Fast USB 2.0 SD/MMC Flash Media Controller  
Datasheet  
6.1  
36-Pin Reset States  
Table 6.1 USB2244/USB2244i Pin Reset States  
Post-Reset State  
SD Mode  
RESET STATE  
OUT-  
PUT  
PU/  
PD  
IN-  
PUT  
OUT-  
PUT  
PU/  
PD  
IN-  
PUT  
PIN  
PIN NAME  
FUNCTION  
FUNCTION  
8
SD_D6  
SD_D7  
SD_D0  
SD_D1  
SD_WP  
SD_D2  
SD_D3  
SD_D4  
SD_CLK  
SD_D5  
SD_CMD  
none  
none  
none  
none  
SD_WP  
none  
none  
none  
none  
none  
none  
z
z
z
z
0
z
z
z
z
z
z
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
SD_D6  
SD_D7  
SD_D0  
SD_D1  
SD_WP  
SD_D2  
SD_D3  
SD_D4  
SD_CLK  
SD_D5  
SD_CMD  
hw  
hw  
hw  
hw  
(fw)  
hw  
hw  
hw  
hw  
hw  
hw  
pu  
pu  
pu  
pu  
(fw)  
pu  
pu  
pu  
--  
yes  
yes  
yes  
yes  
(fw)  
yes  
yes  
yes  
yes  
yes  
yes  
7
5
4
30  
25  
23  
20  
9
10  
11  
pu  
pu  
19  
26  
24  
27  
29  
31  
21  
28  
18  
1
GPIO14  
GPIO15 (SD_nCD)  
GPIO12  
GPIO  
GPIO  
GPIO  
GPIO  
GPIO  
GPIO  
GPIO  
TEST  
nRESET  
GPIO1  
none  
z
z
z
0
0
0
z
z
z
pu  
pu  
pu  
--  
yes  
yes  
yes  
--  
GPIO2 / RXD / SDA  
GPIO4  
RXD  
z
pu  
yes  
--  
--  
GPIO7 / TXD / SCK  
GPIO10(CARD_PWR)  
TEST  
TXD  
hw  
--  
--  
--  
--  
--  
--  
PWR  
VDD  
--  
--  
--  
yes  
yes  
nRESET  
--  
GPIO1 (LED1)  
NC  
0
z
--  
--  
--  
--  
17:15  
12  
2
none  
none  
z
z
--  
--  
--  
--  
NC  
none  
z
z
z
--  
--  
--  
--  
--  
--  
USB+  
USB+  
USB-  
3
USB-  
35  
33  
32  
RBIAS  
XTAL1 (CLKIN)  
XTAL2  
Revision 1.0 (05-27-08)  
14  
SMSC USB2244/USB2244i  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Ultra Fast USB 2.0 SD/MMC 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.  
SMSC USB2244/USB2244i  
15  
Revision 1.0 (05-27-08)  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Ultra Fast USB 2.0 SD/MMC 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.  
Revision 1.0 (05-27-08)  
16  
SMSC USB2244/USB2244i  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
Ultra Fast USB 2.0 SD/MMC Flash Media Controller  
Datasheet  
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  
SMSC USB2244/USB2244i  
17  
Revision 1.0 (05-27-08)  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Ultra Fast USB 2.0 SD/MMC Flash Media Controller  
Datasheet  
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  
Revision 1.0 (05-27-08)  
18  
SMSC USB2244/USB2244i  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
       
Ultra Fast USB 2.0 SD/MMC Flash Media Controller  
Datasheet  
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  
SMSC USB2244/USB2244i  
19  
Revision 1.0 (05-27-08)  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Ultra Fast USB 2.0 SD/MMC Flash Media Controller  
Datasheet  
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
Revision 1.0 (05-27-08)  
20  
SMSC USB2244/USB2244i  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
       
Chapter 9 Package Outline  
Figure 9.1 USB2244/USB2244i 36-QFN, 6x6mm Body, 0.5mm Pitch  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Ultra Fast USB 2.0 SD/MMC Flash Media Controller  
Datasheet  
Chapter 10 GPIO Usage  
Table 10.1 USB2244/USB2244i 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  
Transmit Port of Debugger / Serial  
EEPROM Clock  
GPIO10  
GPIO12  
GPIO14  
GPIO15  
L
CRD_PWR  
GPIO  
Card Power Control  
User defined  
USER  
USER  
L
GPIO  
User defined  
SD_nCD  
Secure Digital card detect  
Revision 1.0 (05-27-08)  
22  
SMSC USB2244/USB2244i  
DATASHEET  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     

Sharp Microwave Oven CE283DN User Manual
Sherwood Stereo Receiver R 872 User Manual
Silvercrest Blender SSMS 300 A1 User Manual
Sony Camcorder CCD TR516 User Manual
Sony Handheld Game System PSP 1001 User Manual
Sony Laptop VPCZ2200C User Manual
Specialized Bicycle Accessories S WORKS CARBON HARDTAIL User Manual
SPX Cooling Technologies Fan 98 1514E User Manual
Stanley Black Decker Trash Compactor HSX SERIES User Manual
Sub Zero Ice Maker PRO 48 User Manual