iggunr wrote:Just curious, which ic are you going to use? i saw someone using a tc9231n but it seems that IC is a little scarce and also very expensive.
http://www.gamesx.com/wiki/doku.php?id=av:nintendogcda
what are the options to convert the i2s signal from the cube to toslink?
The cool thing about the TC9231 is its ability to be used for digital audio in other equipment, not just Gamecube..
SNES(??)
Saturn
Dreamcast
Playstation
MIDI instruments
the bad thing, It appears these digital audio mods are not popular due to the chip being hard to find or too expensive as you have posted.
I almost killed the idea when i read posts indicating the going price for the chip was about $40-$50 due to it being discontinued. I then thought about a compatible chip such as the TC9271 but that is also discontinued, not to mention the circuit would need to be redesigned since the chip is not a drop in replacement.
in order to perform the digital audio mod there are only 2 choices:
1. find a TC9231
2. redesign the circuit with an available chip
im going to take the easy road and use the original design/chip.
iggunr wrote:
Also I noticed that the digital audio is a separate circuit, it doesn't has to pass thru the mx chip so it can even be made as an internal mod in the gamecube, you can offer it as a kit too.
the same can be said about the whole component circuit, people who ditched the optical drive in their cubes will find an awesome way to fill up all that empty space
Correct...
the digital audio mod does not require the MX chip, nor does it need the official component cable. The only practical reason this mod requires the official component cable is to access the data pins thru the cable's port connector. With that being said, digital audio can be added to any Gamecube DOL-001 without the official component cable as long as those connections are added internally with only a few simple solder points.
The component video board can also be added internally with the optical drive removed and some soldering..or add it to GC portable projects.
it could also be added internally with the drive still connected, just a bit harder.
First i need to finish the project...then i can provide more specific details..