Smart LTE Module Series
Smart EVB G2 User Guide
Smart_EVB_G2_User_Guide 39 / 59
20K
ESD
MIC_GND
MIC2_P
HPH_L
HS_DET
HPH_R
HPH_REF
33pF
Module
R1
0R
6
3
4
5
2
1
33pF 33pF
C3
C4
C5
F3
F2
F1
D1 D2 D3 D4
F4
R2
R3
0R
Figure 27: Reference Design for Headset Interface
The following figure shows the pin assignment of headset interface.
Figure 28: Pin Assignment of Headset Interface
The following table shows the pin definition of headset interface.
6
5
4
3
2
1