User's Manual
Table Of Contents
SIM340DZ EVB User Guide
3.2 Audio Interface
Figure 5: Audio Interface
Headset interface:
Pin Signal I/O Description
1 MIC1P I Positive microphone input
2 SPK1P O Positive receiver output
3 SPK1N O Negative receiver output
4 MIC1N I Negative microphone input
Earphone interface:
Pin Signal Input/Output Description
5 MIC2P&SPK2P I/O Auxiliary positive input and output
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