User guide

M80 EVB User Guide
M80_EVB_UGD_V1.2 - 18 -
Figure 14: Test points of loud speaker
Table 5: Test points of loud speaker
Pin
Signal
I/O
Description
Note
1
LOUDSPKN
O
Negative loud speaker output
2
LOUDSPKP
O
Positive loud speaker output
3.3.4. PCM interface
M80 supports PCM interface. An audio codec, W681360, is applied on the EVB. The audio codec
transforms audio from analog signal to digital signal or the opposite action. For more information,
please refer to document [6].
1
2
Quectel
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