Table 3.1 Pin Descriptions
Description
Pin #
Pin Name
I/O
SD card detect;
("0":Detected; "1":unDetected[Default])
1
SDCDN
I
2
SDCLK
SDCMD
CLED
O
I/O
O
O
I
SD CLK
3
SD CMD
4
Card activity LED
5
DLED
Device LED
6
VDDA
2.5V Analog power
7
GNDA
RPU
I
Analog GND
8
I
Connect 1.5K pull up resistor to 3.3V VDD
9
AVDD
I
3.3V Analog power
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
DP
I/O
I/O
I
DP
DM
DM
AVSS
Analog GND
RREF
I
Connect 1K resistor to AVSS for impedance match
OSC power 3.3V
12MHz crystal input
12MHz crystal output
OSC GND
PVDD
I
X_IN
I
X_OUT
PVSS
O
I
VDD25V
VDDH
VSSH
O
I
2.5V output connect to core power VDD
I/O power 3.3V
I/O GND
I
VDD33
MS_V33
SD_V33
MSDATA3
EEPCLK
EPPDATA
MSDATA2
MSDATA1
MSDATA0
MSCLK
MSBS
I
3.3V for card power
3.3V for MS card
3.3V for SD card
MS data3
O
O
I/O
O
I/O
I/O
I/O
I/O
O
O
I
EEPROM CLK
EEPROM Data
MS data2
MS data1
MS data0
MS CLK
MS BS
MSINS
VDD
MS INS
I
Core power 2.5V
Core GND
GND
I
RFU0
I
Always pull low
Chip reset, pull up with RC.
RSTN
I
Operating power in confiscation
Descriptor ;("0":100mA[Default];"1":250mA)
37
PWDES
I
Page 9 of 20
AU6333 USB 2.0 SD/MMC/MS Single/Dual LUN Flash Memory Card Reader V1.04W
Official release _ Public