GM47/GM48 INTEGRATOR’S MANUAL

configure the whole profile, specifying each audio parameter in a comma separated list;

set a single parameter, given by its parameter number;

save the current profile to non-volatile memory under the current profile number (see AT*E2APR).

The current audio settings can also be displayed by running the read command AT*E2EAMS?

Default audio settings are given in AT*E2APR. Abortability:

This command may not be aborted.

Refer to the diagram below to understand which parts of the audio circuit are affected by the various parameters.

CODEC

DSP

ATMS AuxInGain

TxPCM

 

 

PCMOUT

PCMULD

Speech

TxPGA

TxGainLow

decoder

 

 

 

 

 

 

F/R

 

 

 

 

 

MICP

MicPath switches

SideTone

Handsfree

MicInGain

MICN

Aux Amp

SpkPath switches

BEARP

Ear Amp

BEARN

RxPCM

Gain

SideTone

switch

RxPGA

Volume

PCMIN PCMDLD

Encoder

 

F/R

 

 

 

 

 

 

 

EchoCancel

NoiseRed

Figure 4.1 Audio diagram of the CODEC

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Sony Ericsson GM48, GM47 manual Audio diagram of the Codec