Pcm Offset Setting; Pcm Data Polarity - Huawei MU509 Series Design Manual

HUAWEI LGA Module PCM Audio Design Guide

2.2.5 PCM Offset Setting

Huawei LGA module supports three PCM offset settings, including offset cleared,
short sync offset set and long sync offset set.
PCM offset setting
Offset cleared
Short sync offset set
Long sync offset set
Table 2-6 PCM offset settings supported by different modules
Module
MU509 series
MC509 series
MU709 series
ME909u-521

2.2.6 PCM DATA Polarity

Huawei LGA module supports two PCM data polarity settings, including falling edge
and rising edge.
PCM data polarity
Falling edge
Rising edge
Each module supports different PCM data polarity settings, as shown in Table 2-7 .
And the setting cannot be modified by AT^CPCM command.
Table 2-7 PCM data polarity settings supported by different modules
Module
MU509 series
Issue 04 (2016-12-12)
Description
The sync launched is aligned to the rising edge of the
PCM_CLK.
The short sync sent to the external world in
MASTER_PRIM mode is launched 1/4 cycle after the
rising edge of the PCM_CLK.
The long sync sent to the external world in MASTER_AUX
mode is launched 1/4 cycle ahead of the rising edge of
PCM_CLK.
Offset cleared
Support (default)
Support (default)
Support (default)
Support (default)
Description
The data input or output is followed the falling edge of
PCM_CLK.
The data input or output is followed the rising edge of
PCM_CLK.
Falling edge
Support (default)
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Short sync offset set
Support
Support
Not support
Not support
Rising edge
Not support
PCM Interface
Long sync offset set
Not support
Not support
Not support
Not support
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