SOM-9X20 User Manual
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A.3.16. Mic-In Connector
The SOMDB2 carrier board comes with a Mic-in connector for connecting a microphone. A cable must be
used to connect the devices to the connector. The connector is labeled as “MIC”. The pinouts of the Mic-in
connector are shown below.
Table 14: Mic-in connector pinouts
A.3.17. 2W Speaker Connector
The SOMDB2 carrier board is equipped with two 2W speaker connectors for the right and left speakers
respectively. The speaker connectors are labeled as “SPK_L” and “SPK_R”. The pinouts of the speaker
connectors are shown below.
Table 15: 2W Speaker connectors pinouts
Pin Signal
1
MIC-IN
2
GND
Pin
Signal
1
SPKR_OUT_P
2
SPKR_OUT_M
1 2 3 4
ON DIP
1
1
SPK_R
1
SPK_L
1
1 2 3 4
ON DIP
1
MIC
1
Figure 30: Mic-in connector diagram
Figure 31: 2W Speaker connectors diagram
