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AU6336 USB2.0 SD/MMC Single LUN Card Reader V1.00W
6
Table 3.2 AU6336-MDF Pin Descriptions
Pin #
Pin Name
I/O
Description
1
VD33P
I
UTMI 3.3V power input
2
DP
I/O
USB DP
3
DM
I/O
USB DM
4
VS33P
I
UTMI 3.3V ground
5
XI
I
12MHz crystal input
6
XO
O
12MHz crystal output
7
VDDU
I
UTMI 1.8V input
8
AVDD5V
I
5 to 3.3 regulator 5V input
9
VDD3V
O
5V to 3.3V regulator 3.3V output
3.3V to 1.8V regulator 3.3V input
10
V18
O
3.3V to 1.8V regulator 1.8V output
11
VDDHM
I
IO 3.3V power / 3.3 to 1.8 regulator 3.3V input
12
SDCDN
I
SD card detect
13
VDD33C
I
Card power switch 3.3V input
14
SD_V33
O
Card power switch output
15
SDCMD
I/O
SD command
16
SDDATA1
I/O
SD data 1
17
SDWP
I
SD write protect
18
SDDATA2
I/O
SD data 2
19
CLED
O
Card access LED.
Low for card present
High for card absent
Blink for card access
20
SDDATA3
I/O
SD data 3
21
SDDATA0
I/O
SD data 0
22
SDCLK
O
SD clock
23
VDD
I
Core 1.8V power input
24
REXT
I
UTMI reference resistor
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