UMTS/HSPA/LTE Module Series
UMTS<E EVB User Guide
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4.5.2.2. Earphone Interface (J601)
Audio interface J601 is designed for earphones. A reference circuit design for the interface is shown as
following figure.
SPK_L
MIC_N
MIC_P
75pF
GND
GND
AGND
Close to Socket
Differential layout
15pF
10pF 33pF
GND
GND
AGND
Codec
ALC5616
TLV3104
Close to Socket
AGND
ESD
ESD
Audio Jack
22uF
U101
J601
1
4
5
3
2
SPK_R
10pF
33pF
22uF
6
MIC_P
0R
N
M
_0
R
33pF
GND
AGND
0R
NM_0R
10pF
4.7uF
BTB CON
J501
Figure 15: Reference Circuit Design for Earphone Interface J601
The figure and table below illustrate the pin assignment and pin definition of earphone interface J601.
Figure 16: Pin Assignment of J601
