PIONEERPOS G24-LC manual Basic Audio Setup, Advanced Audio Setup

Chapter 3: AT Commands Reference

Audio Control of Path, Gain and Algorithms is available by these two different modes' sets of commands. It is advised to select the audio mode according to the application needs, either the 'Basic Audio' set or the 'Advanced Audio'.

Basic Audio Setup

This mode’s set of commands suits most users. It provides a simple audio control. In this mode the G24-L will also adjust the paths automatically upon headset interrupt. The G24-L powers up in 'Basic Audio' mode.

Basic audio specific commands are: +CRSL, +CLVL, +CMUT, S94, S96.

Figure 3-3shows the basic audio setup.

	Idle mode	HeadSet mode
There is no signal on the HDST_INT line.
		The user has attached a device to the HDST_INT line ,
		and caused a change in the audio input and output path.

Mic		Speaker	Mic		Speaker
Headset	G24-L	Headset	Headset	G24-L	Headset
Mic		Speaker	Mic		Speaker

Figure 3-3: Basic Audio Setup

Advanced Audio Setup

This mode suits users which require a full control of the audio. When using these advanced commands the audio control will ignore the headset interrupt (when the headset will be connected the paths will not change automatically). Upon invoking any of the advanced Audio specific commands: +MAVOL, +MAPATH, +MAFEAT, +MAMUT the G24-L will enter 'Advanced Audio' mode. G24-L will remain in 'Advanced audio' mode until power cycle.

While in Advanced Mode, all Basic Audio AT commands (+CRSL, +CLVL, +CMUT, S94, S96) are blocked and will return an error.

Figure 3-4shows the advanced setup.

The mic and speaker active are Mic Speaker

set using AT+MAPATH	Headset	G24-L	Headset
	Mic		Speaker

Figure 3-4: Advanced Audio Setup

G24-L supports both analog and digital audio. Digital audio is supported in both basic and advanced audio setups. Switching between analog and digital audio modes is done by AT+MADIGITAL command.

April 15, 2008 G24-L AT Commands Reference Manual 3-157