Quectel EC25

LTE Module Series
EC25&EC21 AT Commands Manual
EC25&EC21_AT_Commands_Manual 193 / 231
Parameter
12.7. AT+QDAI Digital Audio Interface Configuration
The command is used to configure the digital audio interface. When <io>=1, customers can define the
PCM formats by themselves. In the following conditions, the module can be used directly with default
settings (master mode, short-synchronization, 2048K clock frequency, 16-bit liner data format, 8K
sampling rate).
 When <io>=2, and the external codec chip linked with PCM interface is the NAU8814 model and
configurable through the I2C
 when <io>=3, and the external codec chip linked with PCM interface is the ALC5616 model and
configurable through the I2C
 when <io>=5 and the external codec chip linked with PCM interface is the TLV320AIC3104 model
and configurable through the I2C
If there is any error related to ME functionality:
+CME ERROR: <err>
Maximum Response Time
300ms
Reference
Quectel
<mode> Numeric type. Indicates the current configured audio mode
0 Echo canceller, noise suppressor, digital gain and calibration parameter for Handset
1 Echo canceller, noise suppressor, digital gain and calibration parameter for Headset
2 Echo canceller, noise suppressor, digital gain and calibration parameter for Speaker
AT+QDAI Digital Audio Interface Configuration
Test Command
AT+QDAI=?
Response
+QDAI: (list of supported <io>s),(list of supported
<mode>s),(list of supported <fsync>s),(list of supported
<clock>s),(list of supported <format>s),(list of supported
<sample>s),(list of supported <num_slots>s),(list of
supported <slot_mapping>s)
OK
Read Command
AT+QDAI?
Response
+QDAI:
<io>[,<mode>,<fsync>,<clock>,<format>,<sample>,<num
_slots>,<slot_mapping>]