Dreamcast Toslink/Coaxial Mod

General Dreamcast discussion applies here. Before posting here please check the other forums in the Dreamcast section to see if your topic would fit better in those categories.

Moderator: mazonemayu

Forum rules
Please check the other forums in the Dreamcast section before posting here to see if your topic would fit better in those categories. Example: A new game/homebrew release would go in the New Releases/Homebrew/Emulation section: http://dreamcast-talk.com/forum/viewforum.php?f=5 or if you're having an issue with getting your Dreamcast to work or a game to boot it would go in the Support section: http://dreamcast-talk.com/forum/viewforum.php?f=42
citrus3000psi
shadow
Posts: 10

Dreamcast Toslink/Coaxial Mod

Post#1 » Wed Mar 07, 2018 3:01 pm

I didn't see this anywhere on the site, so figured I throw it up. I did a toslink install on the DC a while back.

I designed a board around the TC9231N IC by toshiba. It is now an obsolete part but can be found easily on ebay/aliexpress etc.

This board also works on the 3DO, Saturn and PS1.

I have to versions:

Surface Mount Components:
https://oshpark.com/shared_projects/kvtStGOq
https://oshpark.com/shared_projects/b9Fjt84V

All Through Hole Components
https://oshpark.com/shared_projects/dmxP90H4
https://oshpark.com/shared_projects/aCufR9Yg

Coaxial can also be used instead of toslink very easily with 2 resistors.


Image

Image

Image

User avatar
Xiden
Outrun
Posts: 1167

Re: Dreamcast Toslink/Coaxial Mod

Post#2 » Wed Mar 07, 2018 5:51 pm

very nice! Also welcome to dc talk! I remember bob from retro rgb talks about your awesome work a lot. Glad you are here :)

User avatar
Nocturnal
noob
Posts: 2

Re: Dreamcast Toslink/Coaxial Mod

Post#3 » Sun Jun 17, 2018 2:26 am

I just did this mod, but i used a Toshiba TX179L instead because i like the self-closing cover.

I was able to get the TC9231N from ebay. An SN74HCT04N (Texas Instrument) from mouser.

I did order the board from OSHPARK, thank you very much. I did hower ever cheap out and solder the capacitor and leads directly to the legs of the optical out port.

I mounted the complete assembly on the gd-rom plate and the optical out is right next to the power supply port. I did not want to move or mod my gd-rom.

Because of the placement of the optical out port, i had to remove some of the material that separates the power supply from the rest of the dreamcast.

I did not get power from the legs of the oem dac, instead i got power from the solder joints on the back of the power supply. I used 22awg magnet wire. I also had some C0G grade ceramic capacitors laying around from another project. So i used those.

Pics in the next post.

User avatar
Nocturnal
noob
Posts: 2

Re: Dreamcast Toslink/Coaxial Mod

Post#4 » Sun Jun 17, 2018 2:38 am

IMG_20180617_011820.jpg
IMG_20180617_011836.jpg
IMG_20180617_012037.jpg
IMG_20180617_012043.jpg
IMG_20180617_012100.jpg
IMG_20180617_012114.jpg

User avatar
Wombat
Dreamcast Swirl
Posts: 525
Contact:

Re: Dreamcast Toslink/Coaxial Mod

Post#5 » Sun Jun 17, 2018 9:14 am

Getting the toslink-mod done was always high on my wish list for the Dreamcast, however now with the HDMI board on the horizon I'm hesitant to move forward on this :O

User avatar
Xiden
Outrun
Posts: 1167

Re: Dreamcast Toslink/Coaxial Mod

Post#6 » Sun Jun 17, 2018 11:43 am

Nocturnal wrote:IMG_20180617_011820.jpgIMG_20180617_011836.jpgIMG_20180617_012037.jpgIMG_20180617_012043.jpgIMG_20180617_012100.jpgIMG_20180617_012114.jpg


Awesome job!

  • Similar Topics
    Replies
    Views
    Last post

Return to “Lounge”

Who is online

Users browsing this forum: No registered users