At^saic Audio Interface Configuration - Multi-Tech MultiModem EDGE Reference Manual

16.8 AT^SAIC Audio Interface Configuration

Description:
Test Command Syntax:
Response:
Read Command Syntax:
Response:
Write Command Syntax:
Response:
Parameter Description:
<io>
1
2
<mic>
1
2
<ep>
1
<clock>
0
1
<mode>
0
1
<frame_mode>
0
1
Notes:
• The factory defaults of AT^SAIC vary with the selected audio mode.
If AT^SNFS=1 or 4 or 5, then AT^SAIC=2,1,1.
If AT^SNFS=2 or 3 or 6, then AT^SAIC=2,2,2.
AT^SNFD can be used to reset the factory defaults.
•
For use after restart of the ME, you are advised to store the settings of AT^SAIC and AT^SNFS to the audio
profile saved with AT^SNFW. Otherwise, audio mode 1 (AT^SNFS=1) and audio interface 2
(AT^SAIC=2,1,1,0,0,0) will be active each time the ME is powered up.
•
The parameters <clock>, <mode> and <frame_mode> are mandatory, if parameter <io> is set to 1 (digital).
These parameters can be used to configure the PCM functionality over the digital audio interface (DAI). The
PCM interface supports master or slave mode, short frame or long frame synchronization and 256 kHz or 512
kHz bit clock frequency. In slave mode the clock frequency setting has no influence, because of the BCLKIN
signal being directly used for data shifting. The setting may therefore be either 0 or 1. The table below lists
possible configuration combinations.
• Only audio interface 1 is supported. Always use AT^SAIC=1.
Multi-Tech Systems, Inc. AT Commands for EDGE Modems (S000371G)
AT^SAIC configures the interface connections of the active audio mode. The write
command is usable in audio modes 2 to 6 only.
If AT^SNFS=1, any attempt to use the AT^SAIC write command is rejected with and
returns an error response. This is because all default parameters in audio mode 1 are
determined for type approval and are not adjustable.
To allocate a specific audio mode to one of the audio interfaces, first select the audio
mode with AT^SNFS and then choose the interface using AT^SAIC.
Important Note: Multi-Tech supports only the following setting: AT^SAIC=2,1,1
AT^SAIC=?
^SAIC:(list of supported <io>s), (list of supported<mic>s), (list of supported<ep>s), (list of
supported<clock>s), (list of supported<mode>s), (list of supported<frame_mode>s)
OK
AT^SAIC?
^SAIC: <io>, <mic>, <ep>, <clock>, <mode>, <frame_mode>
OK
AT^SAIC=<io>[, <mic>[, <ep>][, <clock>, <mode>, <frame_mode>]]
OK
ERROR
+CME ERROR: operation not allowed
Input and output selection
Digital input and output
Analog input and output
Microphone selection
Microphone 1
Microphone 2
Select differential earpiece amplifier
Selects the earpiece amplifier 1
Parameter is mandatory if <io>=1 (digital).
256kHz clock
512kHz clock
Parameter is mandatory if <io>=1 (digital).
Master mode
Slave mode
Parameter is mandatory if <io>=1 (digital).
Short frame
Long frame
Chapter 16 – Audio Commands
244