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AU6331 USB 2.0 SD/MMC/MS Single/Dual LUN Flash Memory Card Reader V1.02W
Official release _ Public
Table 3.1 48 Pin Descriptions
Pin #
Pin Name
I/O
Description
1
SDDATA0
I/O
SD data0
2
SDWP
I
SD write protect; pull up with res.
3
SDCDN
I
SD card Detect ("1": unDetected[Default];"0":Detected)
4
SDCLK
O
SD CLK
5
SDCMD
I/O
SD CMD; pull up with res.
6
RFU2
I
Always pull low
7
CLED0
O
LED on for card exists for Full/High Speed
8
RPU
I
Pull up with 1.5K res. To 3.3V VDD
9
AVDD
P
3.3V analog power
10
DP
I/O
DP
11
DM
I/O
DM
12
AVSS
P
Analog Ground
13
RREF
I
Pull down with 1K Res. To AVSS
14
PVDD
P
OSC power 3.3V
15
XI
I
12MHz Oscillator input
16
XO
O
12MHz Oscillator output
17
PVSS
P
OSC ground
18
VDD25D
P
2.5V output for core power
19
VDDH
P
IO power 3.3V
20
VSSH
P
IO ground
21
VDDH
P
IO power 3.3V
22
MS_V33
P
MS card power
23
SD_V33
P
SD card power
24
MSDATA3
I/O
MS data3
25
EEPCLK
O
EEPROM CLK
26
EEPDATA
I/O
EEPROM Data
27
MSDATA2
I/O
MS data2
28
MSDATA1
I/O
MS Data1
29
MSDATA0
I/O
MS Data0
30
MSCLK
O
MS CLK
31
MSBS
O
MS BS
32
MSINS
I
MS card Detect ("1": unDetected[Default];"0":Detected)
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