Technicolor - Thomson ICC19, Principles And Maintenance

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AUDIO MODULE WITH MSP3410
Integrated Circuit IS40 (MSP3410) is used for audio processing. It is
controlled by an 18.432-MHz clock. Management microcontroller IR001
controls it via Bus IIC1, and executes its reset via Pin 39.
This integrated circuit performs the following functions:
- Demodulation of FM audio intercarriers,
- Demodulation of NICAM audio,
- Switching of the various analogue audio sources for the SCART outputs,
- Analogue-to-digital conversion of the various audio sources,
- Corrections on digital audio signals (tone, pseudo-stereo, expanded stereo,
headphone volume, speaker volume, etc.).
- Digital-to-analogue conversion.
The audio signals for the headphone outputs are available on Pins 25 and 26
of IS40. They are amplified by Integrated Circuit IS60, and sent to Connector
BS03.
The audio signals for the stereo speaker outputs are available on Pins 28 and
29 of IS40. They travel through impedance adapter IS01, and are sent to
Pins 13 and 15 of Connector BS02.
NOTES :
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FORMATION TECHNIQUE
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