Er, what? The SA1100 can send digital audio to the DSP, but nor receive digital audio from the DSP? I'm afraid I do not fully
understand this. By the way, what DSP is used?

The DSP, a philips 7705 car audio processor, talks to the SA1100 via I2C for control and I2S for raw audio data. The data to the
DSP from the SA is output only, ie we can send data to it but not get it back. The tuner outputs a raw fm multiplex signal
directly to the DSP, which then processes it, extracts the RDS data stream and the audio L/R signals, and passes the audio
straight through to the onboard DACs. There is no way of intercepting it enroute. The only way of recording the radio would be
to sample the audio outputs with a separate ADC, such as the one the mk2 board uses...

Patrick.

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