Ahh.. So the Digital-Out board must be using the DSP_OUT[12] pins then, which do not carry the FM audio -- those pins are used for other purposes by the DSP chip when in FM mode -- I wonder what happens to the digital out board then?

It also appears that all digital audio is available on the IS_OUT[12] pins, including FM. I wonder if those are currently in-use for the CS4232?

cheers