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Ultra Fast USB 2.0 SD/MMC Flash Media Controller
Datasheet
SMSC USB2244/USB2244i 9 Revision 1.0 (05-27-08)
DATASHEET
Chapter 4 Pin Configuration
Figure 4.1 USB2244/USB2244i 36 Pin QFN Diagram
Thermal Slug
(must be connected to VSS)
SMSC
USB2244/2244i
(Top View QFN-36)
Indicates pins on the bottom of the device.
26
SD_D3
25
GPIO15 (SD_nCD)
24
SD_D2
23
GPIO12
22
VDD33
21
GPIO10 (CRD_PWR)
20
19
GPIO2 / RXD / SDA
27
18
17
16
15
14
13
12
11
10
28
29
31
32
33
36
35
34
30
1
2
3
4
5
6
7
8
9
TEST
GPIO4
SD_WP
GPIO7 / TXD / SCK
XTAL2
XTAL1 (CLKIN)
VDD18PLL
RBIAS
VDDA33
GPIO1 (LED1)
USB+
USB-
SD_D1
SD_D0
VDD33
SD_D6
SD_CLK
SD_D5
VDD18
NC
SD_CMD
NC
NC
NC
nRESET
GPIO14
SD_D4
SD_D7
VDD33