Quectel MC60 Series

GSM/GPRS/GNSS Module Series
MC60 Series Hardware Design
MC60_Series_Hardware_Design Confidential / Released 69 / 114
3.11.3. Reference Design
MC60 can only work as a master, providing clock and synchronization source for PCM bus. A reference
design for PCM is shown below.
PCM_SYNC
PCM_CLK
PCM_OUT
PCM_IN
PCM_SYNC
PCM_CLK
PCM_IN
PCM_OUT
Module
(Master)
Peripheral
(Slave)
Figure 39: Reference Design for PCM
3.11.4. AT Command
There are two AT commands for the configuration of PCM: AT+QPCMON and AT+QPCMVOL. Details
are illustrated below.
 AT+QPCMON is used to configure the operating mode of PCM
Command format: AT+QPCMON=mode, Sync_Type, Sync_Length, SignExtension, MSBFirst
Table 23: AT+QPCMON Command Parameter Configuration
Parameter
Value Range
Description
Mode
0; 2
0: Close PCM
2: Open PCM when audio talk is set up
Sync_Type
0~1
0: Short frame synchronization
1: Long frame synchronization
Sync_Length
1~8
Programmable from 1bit to 8bits via software configuration
in long frame synchronization format
Sign Extension
0~1
Not supported
MSB First
0~1
0: MSB first
1: Not supported
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