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