User's Manual

4.5 Audio interface
Figure 8: Audio interface
Headset interface:
Pin Signal I/O Description
1 MIC1P I Positive microphone input
2 SPK1P O Positive microphone input
3 SPK1N O Negative microphone input
4 MIC1N I Negative microphone input
Headphone interface:
Signal Input/Output Description
5 MIC2P&SPK2P I/O Auxiliary positive input and output
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