User guide

M80 EVB User Guide
M80_EVB_User_Guide_V1.2 - 19 -
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 used in the EVB board. The audio
codec transforms between analog signal and digital signal. For more information, please refer to
document [6].
Module
PCM
interface
Audio codec
PCM
interface
Analog
audio
RJ11
Figure 15: Block diagram of PCM
1
2
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