Pcm Interface Design Guide; Analog Interface Design Guide - Huawei MU509 Hardware Migration Manual

HUAWEI 30 mm × 30 mm LGA Module
Hardware Migration Guide

2.3.2 PCM Interface Design Guide

Please note that the different signal level of PCM between MU509/MC509 and
ME209u-526/ME909u/MU709/ME909s. The signal of MU509 and MC509 is CMOS
2.6 V and ME209u-526, MU709, ME909u and ME909s are CMOS 1.8 V. Therefore,
you must consider compatibility during circuit designing.
Figure 2-11 The recommended connection of the PCM interface in the LGA module

2.3.3 Analog Interface Design Guide

The ME209u-526, MU709, ME909u and ME909s module do not support the analog
audio interface.
MU509 and MC509 module support two channels MIC: one channel EAR and one
channel SPEAKER.
Issue 08 (2016-12-12)
PCM_SYNC: Output when PCM is in master mode.

 PCM_CLK: Output when PCM is in master mode.
MU709 and ME909s support both master and slave mode; MC509, MU509 and ME909u-

521 only support master mode.
The firmware of ME909u-523 and ME209u-526 does not support PCM function yet.

It is recommended that a TVS be used on the related interface, to prevent electrostatic

discharge and protect integrated circuit (IC) components.
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LGA Interface Differences
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