Quectel UC20 User Manual page 18

U501
Codec
ALC5616
HPO_R
AGND
Table 5: Pin Assignment of J601
J404 Pin Pin Name
1 MICP
2 AGND
UMTS&LTE_EVB_User_Guide
Differential layout
IN2N
IN2P
22uF
HPO_L
22uF
10pF 33pF
Figure 10: Earphone Circuit
Figure 11: Pin Assignment of J601
Close to Socket
GND
GND GND
10uF
ESD
75pF 15pF
AGND
Close to Socket
10pF
33pF
ESD
GND
Function
Positive microphone input
Dedicated GND for Audio
Confidential / Released
UMTS/HSPA/LTE Module Series
UMTS&LTE EVB User Guide
J601
1
4
6
5
3
2
Audio Jack
AGND
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