Chapter 3: AT Commands Reference
June 30, 2008 AT Commands Reference Manual 3-231
+MPCMC, Continuous PCM Clock

This command defines whether the PCM clock is generated continuously or not, when phone is in

digital audio mode (configured by AT+MADIGITAL command). The change takes effect after

the next audio operation.

Note: User is advised not to enable sleep mode feature if he wants to use continuous PCM clock

feature. Otherwise PCM clock will not work correctly while module is in deep sleep

mode.

The following table shows the +MPCMC parameters.

Example
AT+MPCMC=?
+MPCMC:(0-1)
OK
AT+MPCMC=1
OK
AT+MP CMC ?
+MPCMC: 1
OK
AT+MPCMC=0
OK
AT+MP CMC ?
+MPCMC: 0
OK
Command
Type Syntax Response/Action Remarks
Set +MPCMC=<flag> OK
or:
+CME ERROR: <err>
The Set command is used for setting
the PCM clock configuration.
Read +MPCMC? +MPCMC: <flag>
OK
or:
+CME ERROR: <err>
The Read command returns the current
PCM clock <flag> value.
Test +MPCMC=? +MPCMC: (list of
supported <flag>s)
OK
The Test command returns the possible
<flag> values.

Table 3-147: +MPCMC Parameters

<Parameter> Description
<flag> 0 Non-continuous PCM clock.
1 Continuous PCM clock.
Before the AT+MPCMC command is set for the first time,
this value is 0.
Power-up is according to the flex.