Audio Interface - Quectel M10 User Manual

3.2. Audio Interface

Table 2: Pins of audio channel 2
Interface
AIN2/AOUT2
Table 3: Pins of audio channel 1
Interface
AIN1/AOUT1
M10_EVB_User_Guide
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Figure 5: Audio interface
Signal Pin NO.
MIC2N 1
AGND 2
SPK2P 3
MIC2P 4
Signal Pin NO.
MIC1N 1
SPK1N 2
SPK1P 3
MIC1P 4
Description
Channel 2 for Negative microphone input
AGND of audio circuits
Channel 2 for Positive receiver output
Channel 2 for Positive microphone input
Description
Channel 1for Negative microphone input
Channel 1for Negative receiver output
Channel 1Positive receiver output
Channel 1Positive microphone input
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