UMTS/HSPA+/LTE Standard Module Series
Mini PCIe-C EVB User Guide
Mini_PCIe-C_EVB_User_Guide 19 / 39
PCM_IN
PCM_OUT
PCM_SYNC
PCM_CLK
J101
VDD_1.8V
A1 B1
M
IC
_
B
IA
S
MIC_P
MIC_N
SPK_P
SPK_N
MIC
(J401/J404)
Handset
(J401/J404)
11
10
7
5
45
51
47
49
TXS0104E
A2 B2
A4 B4
A3 B3
VDDA VDDB
PCMI
PCMO
PCMSYNC
MCLK
TLV320AIC1106
VDD_3.0V
AVDD_3.0V
U402
U401
Figure 11: Reference Circuit Design for Codec
1)
Software functions of J401 and J404 are not supported.
4.3.1. Analog Audio Interfaces Connected to Codec for PCM Function Testing
(J401/J404)
1)
4.3.1.1. Earphone Interface (J401)
The analog audio interface J401 is designed for CTIA earphone. Its reference circuit design is shown in
the following figure.
33pF
GND GND
Differential
layout
10pF
10pF 33pF
GND
GND
AGND
4.7uF
AGND
ESD
ESD
TLV320AIC1106
Codec
MIC_N
MIC_P
10pF
33pF ESD
J401
Audio Jack
SPK_P
SPK_N
2
4
5
3
1
10
11
5
7
AGND
Figure 12: Reference Circuit Design for Earphone Interface J401
NOTE