Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

DAC inside CD Player with aux digital input
DAC inside CD Player with aux digital input
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 18th April 2002, 07:15 AM   #1
ergo is offline ergo  Estonia
diyAudio Member
Join Date: Mar 2001
Location: Tallinn, Estonia
Default DAC inside CD Player with aux digital input

I have a setup at the moment where I have an upgaded non os DAC inside the cd player. It's fed by I2S signal from servo/decoder IC. Now I'm in the point where I would like to make a proper PCB for it. But, as I also watch movies etc. and would like to use the same DAC I'd like to include SPDIF input to this setup.

Have any of you guys done something similar? The main point being to keep the I2S connection inside player but to add switchable SPDIF input with help of for example CS8412. What would be the best method to switch these signal. If I could program programmable logic then I quess that would be the way to go, but as I can't, is there any other solution you can suggest to me?

  Reply With Quote
Old 18th April 2002, 08:02 AM   #2
sonnya is offline sonnya  Denmark
diyAudio Member
sonnya's Avatar
Join Date: Oct 2001
Location: Denmark
You can do the shift/routing between the I2S in the dac and CS8412 with 4 nand and 8 or gates.. i think . And still be able keep no timing difference in a the 4 signals.

It can be a bit difficult with PLD if you are a "beginner" at this point .. But hey we all have to learn somehow!

  Reply With Quote
Old 18th April 2002, 10:52 AM   #3
KasperM is offline KasperM
diyAudio Member
Join Date: Nov 2001
Location: Aalborg, Denmark
Maybe do the switching with an ordinary multiplexer. A device like the 74F157 should be up to the task.

Offcourse there is no control on where, with respect to the timing of the serial audio transmission, the four signals are switched. I mean when you switch from one input to the other you will probably introduce a strange signal to the DAC. If you build the DAC circuit yourself you can just hold the DAC in reset state when you change the input.

Kasper M
  Reply With Quote


DAC inside CD Player with aux digital inputHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Corks inside a cd player? ash_dac Digital Source 45 4th September 2005 10:09 PM
DIY CD player with reclocking inside philbyx Digital Source 2 8th March 2005 06:00 AM
Adding Digital Input to CD Player -> low cost DAC for PC Brent Welke Digital Source 1 2nd January 2005 04:57 AM
Getting inside 'digital' PCs richie00boy Everything Else 2 1st January 2005 12:34 PM
Putting an external DAC inside a dvd/cd player Vinnie R. Digital Source 3 14th July 2003 04:31 PM

New To Site? Need Help?

All times are GMT. The time now is 02:34 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio