Specifications

Voice Commands
Rev. 8 May.12 Proprietary and Confidential 141
!AVEXTPCMSTOPCLKOFF
Supporting chipsets (voice-
enabled devices only):
• MDM6200
• MSM6290 (min f/w rev:
K1_0_2_0ap)
• QSC6270 (min f/w rev: S2.0)
Prevent/allow external PCM interface clock from turning off
Prevent (or allow) the external PCM interface clock from being turned off if the
current audio profile uses the external PCM interface.
Note: The external PCM interface for the current audio profile must be enabled
before using this command.
Device-specific details:
• MSM6290 (Firmware revisions K2_0_7_8ap and lower):
• The change takes effect the next time the modem restarts.
• All other chipsets/firmware revisions:
• The change takes effect immediately.
Usage:
• Execution: AT!AVEXTPCMSTOPCLKOFF=<value>
Response:
OK
Purpose: Enable or disable (<value>) the ability to turn off the external PCM
interface clock
• Query: AT!AVEXTPCMSTOPCLKOFF?
Response:
<value>
OK
Purpose: Return the current status (<value>) of this option.
Parameters:
<value> (Ability to prevent PCM clock from being turned off)
• 0=Disable
• 1=Enable
• At startup, if audio profile 0 (default) uses the external PCM interface, the
modem enables the clock.
• At startup, if audio profile 0 (default) does not use the external PCM
interface, the user must switch to a different profile that does use the
external PCM interface to enable the clock.
Note: If the user switches from a profile that uses the external PCM interface to one
that does not, the PCM clock is lost.
Note: Depending on the external CODEC configuration, OEMs using this command
might prevent the audio from being muted, so the device could be more prone to
noise from the RF subsystem.
Table 7-5: Voice command details (Continued)
Command Description