Audio Parameter Characteristic - SimCom SIM5215 Hardware Design

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Figure 24: Microphone interface configuration
Figure 25:: Headphone Microphone interface configuration
Note: SIM5215&SIM5216 has integrated MIC bias circuit. There is no need to pull the MIC_P and MIC_N up to the
external power, just connect it to microphone. MIC_P and MIC_N must be differential lines.
3.4.3

Audio Parameter Characteristic

Main audio parameters can be changed to satisfy users' requirement. Here primary register parameters and
related description are listed. User can adjust them through AT command. For more detail please refers to
Audio Application Document.
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SIM5215&SIM5216_Hardware Design_V2.02 2012-08-31