SMSC USB2244 - Manual (Page 9)

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
GP
IO
1
5
(
S
D_
nC
D)
24
SD_D2
23
GP
IO
1
2
22
VDD3
3
21
GP
IO
1
0
(C
R
D
_
P
W
R
)
20 19
GP
IO
2
/
R
X
D / 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 (L
ED1)
USB
+
US
B-
SD_
D
1
SD_
D
0
VDD33 SD_D6
SD
_CLK
SD_D5
VDD18
NC
SD_CMD
NC
NC
NC
nRESET
GP
IO
1
4
SD_D4
SD_D7
VDD33