🚀 go-pugleaf

Thanks for your information.

The problem is that I don't have any schematic diagrams for
my CD Player / CD ROM drive. It's difficult to pin out which 
chip is responsible for DAC as I don't have a list of commonly
used DAC chips. Where can I find such a complete list of chips 
by different manufacturers ? (Crystal, Burr-Brown, AKM, Analog 
Devices (as you mentioned), and Philips (?) ... etc)  ?

Many thanks again!


: I've never done this, but depending on the player, it might be doable. What
: you need is to find a signal line(s) in the player that has a SP/DIF or I2S
: signal. There are chips that will handle that data and create a good SP/DIF or
: TOSLink output from it.

: So, having a service manual for the player that has a schematic in it would be
: a good place to start. YOu can use it to find out where to find the internal
: power and signals that you need for your project. Denon probably has a
: national parts warehouse where you can order these things.

: Even lacking that, if the Denon has standard DAC chips in it, then you can
: find a lot of what you need from data sheets for those chips. For example, my
: Denon DAC has Burr-Brown 1702 DAC's in it. If you go to the B-B web site you
: can download PDF files that are data sheets for those DAC's, and find out what
: pins have the apropriate digital signals on them.

: For DAC chips and digital line drivers, the leading producers are Crystal
: Semiconductor. Burr-Brown, AKM, and Analog Devices. They all have pretty
: complete web sites you can find from a regular search engine using the company
: name. AFAIK, they all have pretty complete data sheets and application notes.
: You will probably be able to find application notes that show how to
: interconnect their chips to do many digital audio applications.