User's Guide

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SIM5360A EVB User Guide 03.18.2014

4.2 Audio Interface

Figure 4: Audio Interface

J306 is the handset interface. X501 is the headset interface.

NOTE: The MIC’s polarity must be correct.

Table 3: Earphone interface

Pin Signal Input/Output Description

1 MIC1P I Positive microphone input

2 EAR_P O Positive receiver output

3 EAR_N O Negative receiver output

4 MIC1N I Negative microphone input

Table 4: Headset interface

Pin Signal I/O Description

5 GND Ground

6 HEADSET_MIC+ I Headset microphone input

7 HPH_L O Positive microphone output

8 HPH_R O Negative microphone output

Speaker interface：

Please refer Figure 1. Pin 1 and Pin 2 is the SPK_M and SPK_P on J501.

NOTE: Audio cable must be away from the RF antenna, otherwise TDD noise may be occurred.