UMTS/HSPA/LTE Module Series
Mini PCIe EVB User Guide
Mini_PCIe_EVB_User_Guide Confidential / Released 16 / 30
PCM_IN
PCM_OUT
PCM_SYNC
PCM_CLK
I2C_SCL
I2C_SDA
CODEC
ALC5616
J101
1.8V or 3.0V
4
.7
K
4
.7
K
BCLK1
LRCK1
DACDAT1
ADCDAT1
SCL
SDA
M
IC
_
B
IA
S
MICBIAS1
IN2P
IN2N
LOUTP
LOUTN
R
C
HPO_L
HPO_R
MIC
Earphone
Handset
24
23
22
21
26
27
32
3
4
20
17
10
9
45
51
47
49
30
32
J405
Figure 8: Audio Codec Circuit
3.3.1. Earphone (J401/J403)
A CTIA earphone can be used in audio interface J401 or J403. The name of the corresponding pins had
been marked on the EVB. Figure 9 and Figure 10 show the circuit of audio interface J401 and J403 for
earphone separately.
33pF
GND GND
Differential
layout
10pF
10pF 33pF
GND
GND
AGND
4.7uF
AGND
ESD
ESD
ALC5616
CODEC
IN2N
IN2P
10pF
33pF ESD
J401
Audio Jack
HPO_L
HPO_R
2
4
5
3
1
4
3
20
17
AGND
Figure 9: J401 Earphone Circuit
Quectel
Confidential