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Sim2 M80 User's Guide Page 14

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EVB User Guide
M80_EVB_UGD_V1.0 - 13 -
3.2. Audio interface
3&4
1234
1234
1
234
Channel 2
Channel 1
Channel 2
PCM channel
Figure 5: Audio interface
Table 3: Pins of PCM channel
Pin
Signal
I/O
Description
Note
1
MIC2N
I
Negative microphone input
2
SPK2N
O
Negative receiver output
3
SPK2P
O
Positive receiver output
4
MIC2P
I
Positive microphone input
An earphone or handset can be used in audio channel 2.
Table 4: Pins of audio channel 2
Pin
Signal
I/O
Description
Note
1
MIC2N
I
Negative microphone input
2
AGND
AGND of audio circuits
3
SPK2P
O
Positive receiver output
4
MIC2P
I
Positive microphone input
An earphone or handset can be used in audio channel 2.
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