TVP5146 initialization on Video Input Daughtercard

Hi all,

Altera's Video Input Daughtercard (as included with the Cyclone II DSP dev kits) uses 2 of the TI TVP5146 TV decoder ICs. The only example design I can find that uses this card is the example that ships with the Cyclone II dev kit, and it isn't documented at all with regard to the I2C interface to the TVP5146.

I'd like to use this daughtercard with a Stratix II DSP dev kit, but I will need to build my own design in Nios II to interface to the TVP5146. I'd like the composite input to be sent out as BT.656, much as it is in the example design, but I can't decode what initialization commands are sent to the TVP5146.

I've tried a mySupport request and was only told to read the TVP5146 manual. I've tried this and can't get it to work. Does anyone have a suggested initialization sequence for the TVP5146, or can anyone tell what the example design is sending?

Thanks in advance.:)