Pin (Card)
5
6
7
8
2.4.13
Audio Connector (CN13)
Pin
Signal
1
MIC1
3
MIC2
5
HPO_R
7
GND
9
HPO_L
GPIO3: Headphone or jack detection
GPIO4: Presence – detects if audio dongle is connected to header.
Chapter 2 – Hardware Information
USB Card Pin Map
Pin (Connector)
#5
#6
#7
#8
Pin
2
4
6
8
10
Function
CLK
VSS
DAT0
DAT1
Signal
GND
GPIO4
MIC_IN_DET
-
GPIO3
20