NICAM sound

[catdog]

Sorry for the delay on updates - schematic now attached!

I ran into an issue that the default settings for the STV8216 were all fine - except the outputs are muted on startup! The tivo I2C bus *should* have been capable of turning the mute off, but for some unknown reason it refuses to communicate with devices at normally unused addresses. I now have a PIC micro which turns the mute off instead, which is a simple workaround for the problem.

The prototype has been running for a month or two now without any issues and sounds much better/clearer than the mono sound from the tuner.

The circuit is shown in the photo to give an idea of what is required to build your own, it's a bit rough, but remember that it is a prototype (and it works)!

[DOlsen]

Glad to hear that the nicam problem has been solved.

Do you have the pcb design available to create a pcb with?
Pity about the tivo not letting you communicate with the decoder chip, nice workaround though.

Do you have the decoder chips available to purchase yet, or are the ones you've got so far taken?