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High Speed Inter-Chip USB 2.0 Hub and Flash Media Controller
Datasheet
SMSC USB4640/USB4640i 11 Revision 1.0 (06-01-09)
DATASHEET
Chapter 3 Pin Configuration
Figure 3.1 USB4640/USB4640i 48-Pin QFN
Ground Pad
(must be connected to VSS)
SMSC
USB4640/40i
(Top View QFN-48)
Indicates pins on the bottom of the device.
nRESET
38
39
GPIO1 / LED / TXD
37
TEST
40
VDD12
41
HSIC_STROBE
43
XTAL2
44
XTAL1 (CLKIN)
45
RBIAS
48
VDD33
47
PLLFILT
46
HSIC_DAT
42
VDD33
1
USBDN_DM2
2
USBDN_DP2
3
USBDN_DM3
4
USBDN_DP3
5
PRTCTL2
6
PRTCTL3
7
SPI_CE_n
8
SPI_CLK / GPIO4 / SCL
9
VDD33
10
SPI_DI
11
SPI_DO / GPIO5 / SDA / SPI_SPD_SEL
12
21
SD_CLK / MS_BS / xD_nWP
20
SD_D6 / MS_D7 / xD_D0
19
SD_D7 / MS_D6 / xD_D1
18
SD_D0 / MS_D4 / xD_D2
17
CRFILT
16
SD_D1 / MS_D5 / xD_D3
15
VDD33
14
GPIO15 / SD_nCD
13
GPIO6 / SD_WP / MS_SCLK / xD_D4
23
SD_D5 / MS_D1 / xD_ALE
22
xD_nWE
24
35
GPIO2 / RXD
34
GPIO10 (CRD_PWR)
33
VDD33
32
SD_D3 / MS_D3 / xD_D6
31
GPIO12 / MS_INS
30
SD_D4 / MS_D2 / xD_D7
29
GPIO14 / xD_nCD
28
xD_nB/R
36
SD_D2 / xD_D5
27
xD_nRE
26
xD_nCE
25
VDD33
SD_CMD / MS_D0 / xD_CLE
HSIC_IMP