1394
Pin
Assignment
1
Power
2
Ground
3
TPB-
4
TPB+
5
TPA-
6
TPA+
Audio-in (microphone)
Pin
Signal
1
Audio signal in
2
Audio signal in
3
Ground
Audio-out (headphone)
Pin
Signal
1
Audio out, left channel
2
Audio out, right channel
3
Ground
148 Chapter 9 Connector pin assignments