Doc Title
Linkplay WiFiAudio-A76 Specification
Number
WMB20170117
Version
1.2
Document No.: WMB20170117
Page 6 of 21
Figure 2-1 A76 interface pins
Pin description:
Pin No.
Pin Name
Type
Function0
Function1
1
,
2
,
5
,
29
,
30
,
54
GND
Supply
Digital ground
3
,
4
5VIN
Power I
Power supply input > 500mA
6
VDDRTC
Power I
RTC power supply input < 40uA
8
+3.3V
Power O Output for I/O power < 100mA
7
GPC23
I
SDIO0 card detect, external
pull-up required
9
GPB22
I/O
General purpose input output,
external pull-up required
10
MSC0_CMD
O
SDIO0
command,
external
pull-up required
11
MSC0_CLK
O
SDIO0 clock
12
MSC0_D0
I/O
SDIO0 data 0, external pull-up
required
13
MSC0_D1
I/O
SDIO0 data 1, external pull-up