Huawei MC509 CDMA LGA manual Digital Audio, Pcmsync, Pcmdin, Pcmdou, Pcmclk

Models: MC509 CDMA LGA

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HUAWEI MC509 CDMA LGA Module

 

Hardware Guide

Description of the Application Interfaces

Figure 3-13Circuit diagram of the interface of the second audio channel

SPKR_OUT_P

SPKR_OUT_N

Module

(DCE)

ferrite bead

ferrite bead

1nF

1nF

1nF

ESD protection

ferrite bead

+

_

Speaker

MIC2_P

MIC2_N

1nF

 

 

ferrite bead

 

 

 

 

 

 

 

 

1nF 1nF

protection

+

 

ESD

_

 

MIC

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.

3.8.2Digital Audio

The MC509 provides one digital audio channels (Data only doesn’t support the voice function). Table 3-12lists the signals on the digital audio interface.

Table 3-12Signals on the digital audio interface

 

 

 

Pin

Pin Name

I/O

Description

DC Characteristics (V)

No.

 

 

 

Min

Typical

Max

 

 

 

 

5

PCM_SYNC

O

PCM interface sync

-0.3

2.6

2.9

6

PCM_DIN

I

PCM I/F data in

-0.3

2.6

2.9

7

PCM_DOU

O

PCM I/F data out

-0.3

2.6

2.9

 

T

 

 

 

 

 

 

 

 

 

 

 

 

8

PCM_CLK

O

PCM interface clock

-0.3

2.6

2.9

The MC509 PCM interface enables communication with an external codec to support linear and μ-law format. The PCM_SYNC runs at 8kHz with a 50% duty cycle.

Issue 01 (2011-04-08)

Huawei Proprietary and Confidential

39

Copyright © Huawei Technologies Co., Ltd.

 

 

Page 39
Image 39
Huawei MC509 CDMA LGA manual Digital Audio, Pcmsync, Pcmdin, Pcmdou, Pcmclk