Ultra Fast USB 2.0 SD/MMC Flash Media Controller

Datasheet

Chapter 4 Pin Configuration

 

RXD / SDA

(SD nCD)

 

 

 

 

(CRD PWR)

 

GPIO14

 

 

GPIO2 /

GPIO15

SD D2

GPIO12

SD D3

VDD33

GPIO10

SD D4

 

 

27

26

25

24

23

22

21

20

19

 

TEST

28

 

 

 

 

 

 

 

18

nRESET

GPIO4

29

 

 

 

 

 

 

 

17

NC

SD _WP

30

 

 

 

 

 

 

 

16

NC

GPIO7 / TXD / SCK

31

 

 

SMSC

 

 

15

NC

XTAL2

32

 

USB2244/2244i

 

14

VDD33

XTAL1 (CLKIN)

33

(Top View QFN-36)

13

VDD18

VDD18PLL

34

 

 

Thermal Slug

 

 

12

NC

RBIAS

35

 

 

 

 

11

SD_CMD

(must be connected to VSS)

VDDA33

36

 

 

 

 

 

 

 

10

SD_D5

 

1 2 3 4 5 6 7 8 9

 

 

GPIO1 (LED1)

USB+

USB-

SD D1

SD D0

VDD33

SD D7

SD D6

SD CLK

 

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