Audio Operating Modes - Motorola C24 CDMA 1X Hardware Interface Manual

Applicant: Motorola, INC
2.8.7

Audio Operating Modes

The module's audio interface includes 2 modes of operation. Each operating mode defines the audio
input and output devices to be used for each audio sound type and their programmable settings.
2.8.7.1
Basic audio mode is the module's default power-up audio configuration. Several audio paths are available
in this mode, and their settings can be programmed through the AT command set.
The following table describes the available audio paths in Basic mode.
TABLE 13 – Basic mode audio paths
Audio Path Input Signal
Handset MIC
Headset HDST_MIC
Alert
Digital PCM_DIN
2.8.7.2
An expanded AT command set enables to define a specific audio path and setting, which are not part of
the default configuration, for each type of audio sound (speech, DTMF tones, rings and alerts).
The following table describes the advanced mode audio programming features. These features are only a
part of the complete advanced audio AT command set.
Basic Mode
Output Signal
SPKR_N,
SPKR_P
SPKR_N,
SPKR_P
ALRT_N,
ALRT_P
PCM_DOUT
Advanced Mode
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Page 26 of 36
Description
Default audio path for speech and DTMF
tones.
Alternate path for headset device.
Enable by setting HDST_INT_N
interface signal low.
Default alert and ringer loudspeaker
output device.
Enable digital path by
AT+MADIGITAL=1
FCC ID: IHDP56JE1
C24 Hardware Interface Manual
Version 0.3