Handset Interface (J404) - Quectel Mini PCIe-C EVB User Manual

4.3.1.2. Handset Interface (J404)

The analog audio interface J404 is designed for handset. Its reference circuit design is shown as below.
CODEC
MIC_P
MIC_N
SPK_P
SPK_N
TLV320AIC1106
Figure 14: Reference Circuit Design for Handset Interface J404
The figure and table below illustrate the pin assignment and pin definition of the handset interface J404.
Mini_PCIe-C_EVB_User_Guide
FB
11
10
5
7
Figure 15: Pin Assignments of Handset Interface J404
UMTS/HSPA+/LTE Standard Module Series
10pF 33pF 10pF 33pF 10pF 33pF
10pF 33pF 10pF 33pF 10pF 33pF
1 3
2 4
Mini PCIe-C EVB User Guide
ESD ESD
4
1
3
2
J404
ESD
ESD
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