PI2Media 502HTA
Hardware Reference Manual – P3 - 8/31/2017
PAGE 10
5
RPI GPIO
5.1
OVERVIEW
The 502HTA uses a number of signals from the RPi GPIO header for control and status
purposes. This usage is defined in the following table. Note that on the 502HTA-SA the
Raspberry Pi interface is not supported.
RPi
PIN
DIR AF PUP/
PDN
502HTA
Name
Description/Notes
1
-
-
-
-
RPi +3.3V - Unused
2
-
-
-
+5V
+5V Power to/from the RPi
3
I/O
Y
PUP
I2C_SDA I2C Bus Data - unused
4
-
-
-
+5V
+5V Power to/from the RPi
5
OUT
Y
PUP
I2C_SCL I2C Bus Clock - Unused
6
-
-
-
GND
7
-
-
-
GPIO4
Unused
8
-
-
-
GPIO14
Unused
9
-
-
-
GND
Unused
10
-
-
-
GPIO15
Unused
11
-
-
-
GPIO17
Unused
12
IN
Y
-
BCLK
I2S Bit Clock to pCM5102A
13
-
-
-
GPIO27
Unused
14
-
-
-
GND
15
Out
-
-
GPIO22
Power Hold – Drive high to keep power on
16
-
-
-
GPIO23
Unused
17
-
-
-
-
RPi +3.3V - Unused
18
IN
-
PUP
GPIO24
Power Switch – Read state of power on/off
switch. Low = on.
19
-
-
-
GPIO10
Unused
20
-
-
-
GND
