Digital Audio - Huawei MU509 Series Hardware Manual

HUAWEI MU509 Series HSDPA LGA Module
Hardware Guide
Figure 3-20 Circuit diagram of the interface of the first audio channel
Figure 3-21 Circuit diagram of the interface of the second audio channel

3.8.2 Digital Audio

The MU509 provides one digital audio channels (Data only does not support the voice
function). Table 3-12 lists the signals on the digital audio interface.
Issue 09 (2014-03-06)
MIC1_P
MIC1_N
33 pF
Module
(DCE)
EAR_OUT_P
EAR_OUT_N
33 pF
SPKR_OUT_P
SPKR_OUT_N
Module
(DCE)
MIC2_P
MIC2_N
It is recommended that a TVS be used on the related interface, to prevent electrostatic

discharge and protect integrated circuit (IC) components.
 Data only does not support the voice function.
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Description of the Application Interfaces
100 pF
33 pF
100 pF
33 pF
ferrite bead
ferrite bead
33 pF
100 pF
33 pF 33 pF
ESD protection
Network
Connector
+
100 pF
-
33 pF
ferrite bead
ferrite bead
Speaker
+
-
MIC
45