Thales Gemalto AGS2-E - Audio Codec Adapter Generated Tones

Audio Codec Adapter Setup for Cinterion
®
Modules
3.1 Assembly with DSB75 and AH6-DSB75 Adapter
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 audio_codec_adapter_setup_v04 2019-10-16
Confidential / Released
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3.1.2.3 Audio Codec Adapter Generated Tones
The Audio Codec Adapter itself can also be used to generate DTMF tones or Sine waves. If
employing this feature there are the following restrictions:
• The Audio Codec Adapter can either generate or recognize tones (see Section 3.1.2.4), but
not both at the same time.
• Only a few audio settings and BCLK/FSC frequency combinations are possible:
- BCLK=256kHz
-FSC=8kHz
- Long/short frame sync
- From/to local audio interface, from/to module’s DAI interface
- Module master and slave are supported
DTMF tones can be generated by the Audio Codec Adapter as follows:
DTMF=seq2 local Play sequence #2; output on headphone interface
DTMF=seq3 netw Play sequence #3; output to DAI interface
DTMF=off Stop playing DTMF tones
The following DTMF sequences are defined and can be used with the "DTMF" command:
As no active call is needed for the "local" DTMF mode, this local feature can be used to gener-
ate analogue DTMF tones that can directly feed the headset’s microphone.
Sine waves can be generated by the Audio Codec Adapter as follows:
SINUS = 750Hz, 124ms local Play tone; output on headphone jack
SINUS = 800Hz, 1000ms netw Play tone; output to DAI interface
SINUS=off Stop playing Sine wave
If the duration is greater than 124msec the frequency has a deviation of +/- 4Hz.
Seq1
(quick mode)
Tones: “1 2 3 4 5 6 7 8 9 0 * # A B C D”, level: -6dBfs (full scale)
Tone duration: 41msec, silence: 31msec
No interrupts, no volume twist
Seq2
(twist)
Tones: “1 2 3 4 5 6 7 8 9 0 * # A B C D”, level: -6dBfs (full scale)
Tone duration: 60msec, silence: 50msec
No interrupts, volume twist: 8dB
Seq3
(gaps)
Tones: “1 2 3 4 5 6 7 8 9 0 * # A B C D”, level: -6dBfs (full scale)
Tone duration: 41msec, silence: 31msec
Interrupts: 10msec, no volume twist
Seq4
(low volume)
Tones: “1 2 3 4 5 6 7 8 9 0 * # A B C D”, level: -46dBfs (full scale)
Tone duration: 60msec, silence: 50msec
No interrupts, volume twist: 8dB
Seq
This parameter can be used to configure DTMF sequence characteristics:
DTMF=seq, dur:70, break:40, local (with dur: Duration 1…124msec