Table 5: Pin Assignment Of J404 - Quectel UC20 User Manual

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U401
Codec
NAU8814

Table 5: Pin Assignment of J404

J404 Pin Pin Name
1 AGND
2 MICP
3 SPKP
4, 5 NC
UC20_EVB_User_Guide
Differential layout
MIC-
MIC+
22uF
SPKOUT+
15pF
AGND
Figure 10: Earphone Circuit
5
3
4
Figure 11: Pin Assignment of J404
Function
Dedicated GND for Audio.
Positive microphone input.
Positive speaker output.
/
Confidential / Released
UMTS/HSPA Module Series
Close to Socket
GND
GND GND
10uF
ESD
75pF 15pF
AGND
Close to Socket
75pF
ESD
GND
2
1
UC20 EVB User Guide
J404
Audio Jack
3
4
2
1
AGND
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