Playstation as CD-player - Page 274 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

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

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
Reply
 
Thread Tools Search this Thread
Old 5th June 2012, 08:14 PM   #2731
f2a is offline f2a  Germany
diyAudio Member
 
Join Date: Jan 2007
Location: Franconia Bavaria
Hello ,
one little question : makes the differnet BIOS (SCPH1000/1001/1002/..etc) or the DAC AK4310VM/AK4309B the better Sound in the PSX ? Is where a software filter or upsampling ? Know anybody something ?

Greetings
Bernd
  Reply With Quote
Old 5th June 2012, 08:52 PM   #2732
diyAudio Member
 
Join Date: Jan 2004
Location: US
Quote:
Originally Posted by Puffin View Post
I suppose if you are taking a dig out, you would be best to use a later version of the CS Digital Audio Receiver (CS8416)?
The difference between the ICs are here, but the older one might be obsoleted.

Quote:
Originally Posted by atomcf View Post
You make it sound so easy, haha! I would but I have no idea what I am doing... actually, lets give it a go anyway!
Could I just find a S/PDIF to I2S circuit (maybe using the CS8416 Puffin suggested), going into a AK4309 (or could I possibly have several in parallel?), then going straight to RCA out? or would I need to put the through something first? The Playstation mod uses this, but I read you can just use transformers and you get a better signal? I'm guessing the post DAC stage amplifies the signal?
What would I need in terms of power supply?
I don't really know what I'm doing either. I'm going through engineering school, but they really don't teach much analog when it comes to electrical engineering programs these days. I'd go by an application circuit if you can find it, and use the modified output stage. You can go by the schematic of the power supply of the link to the DAC you posted, and make a variation of that. Most people want the CD player functionality, I guess, of the PS1, and maybe that could be why they don't design a standalone DAC. The AK4309 is only capable of sampling rates up to around 50kHz, so maybe that's why I never found a project on google.

Quote:
Originally Posted by atomcf View Post
So I can run that circuit in reverse for the S/PDIF to I2S stage, and maybe use a CS8416 instead of what I presume is a CS8406?

Also, I found a DAC using the TDA1541 and the CS8416 on pavouk.org, here. Could I use something like this except use AK4309's instead?
You definitely could, I'd rather build a standalone design anyway.

Quote:
Originally Posted by atomcf View Post
There was also just circuitry for the S/PDIF to I2S stage, here.
This will accomplish the task if you wanted to use the PS1 with modified output stage.

When I build and design a project, I use perforated PCBs, with a grid of holes and pads on the other side. I never really tried using PCB software. If you do that you have a problem with surface mounted parts. You'll need to get SMT to through hole adapters. I use them all the time.

Also, attached is the datasheet I got faxed to me years ago for the old TC9231N. It's a multipage tiff file, so make sure to view it a viewer that will show all 15 pages.
Attached Files
File Type: zip Fax00000001.zip (146.2 KB, 60 views)
  Reply With Quote
Old 6th June 2012, 02:16 PM   #2733
diyAudio Member
 
tiefbassuebertr's Avatar
 
Join Date: Jul 2005
Location: D-55629 Schwarzerden
Default For a lot of User's this PS is first choice for CD - that is here very special?

Unfortunately I haven't time to read this thread carefully and completely.
Therefore the stupid question:
What special features are inside here for better sound quality for PCM Audio compared with typical Audio CD Player?

Maybe a reference resp. an indication to the relevant postings I would highly appreciate.

Last edited by tiefbassuebertr; 6th June 2012 at 02:19 PM.
  Reply With Quote
Old 6th June 2012, 02:29 PM   #2734
Puffin is offline Puffin  United Kingdom
diyAudio Member
 
Join Date: Feb 2006
Location: U.K
Tief. I hope I can sum up the reason for this thread in a few words. I can only speak for me, but the attraction was :-
1. Can be bought for as little as 5 ($10) from ebay or similar.
2. They were never intended to be serious CD players.
3. In relation to 2. above, they sound better than anyone would have expected.
4. They can be tweaked to give better results and if you kill one, there is always another available to buy.
5. For me it was a bit of fun that is surprisingly good to listen to.
  Reply With Quote
Old 6th June 2012, 08:48 PM   #2735
diyAudio Member
 
Join Date: Aug 2011
Location: Hilly Hastings, UK
enuman: I'm going to have to put this on hold for two weeks (exams), but thanks for the help! I think I'll use the circuit you found by the Japanese fellow, going to the DAC and modified output stage of the Playstation, and I will be using blank PCB, but I just thought that circuit might be useful. I'm going to assume SDATA=DATA, and BICK=BCK, because I can't find and other matching pins on the TOSlink circuitry, or am I wrong? The only info on the AK4309AVM I could find is here. Would the SDATA, BICK, LRCK, AOUTR & AOUTL pins be the only one I'd need to connect, or would I have to connect a powersource somewhere? I have no idea how to work two AK4309AVM in a differential mode, but I guess for that I should be migrating to the DAC section of the site, haha, but that's a plan for another day. See you soon!

I'll let you all know how it goes.
  Reply With Quote
Old 6th June 2012, 10:15 PM   #2736
diyAudio Member
 
Join Date: Jan 2004
Location: US
Quote:
Originally Posted by atomcf View Post
I'm going to assume SDATA=DATA, and BICK=BCK, because I can't find and other matching pins on the TOSlink circuitry, or am I wrong?
You are correct. One thing I'd like to clarify is the format. The TC9231N seems to only accept the EIA-J format. I remember reading this format is similar to I2S except the word clock is inverted. Every schematic I've seen using this IC for modification on video game consoles, the word clock is always inverted with a logic IC. This is always the case. So I'm guessing, whoever originally came up with the schematic knew the word clock had to be inverted.

Secondly, the DIT4096 and the CS8406 only support 4 audio formats in hardware mode. They are left justified 24 bit, I2S, right justified 24 bit and right justified 16 bit. On here, I have seen two schematics using the DIT4096 for adding S/PDIF output on Sony CD players. In both schematics, the DIT4096 was configured for right justified 16 bit. The modifications I see using the CS8406 with video game consoles have the CS8406 configured for 16 bit right justified, for the Dreamcast, Saturn, and SNES. I haven't found the schematic for using the CS8406 with the Gamecube, so I wouldn't know how it would be configured. I'd say the same, 16 bit right justified, as well as for the PSX. I do know that for XM radios using the STA450 decoder, if you would interface a DIT4096 to it's PCM output, it would have to be configured for I2S. Interfacing the DIT4096 to the Gamecube with my own tests configured for I2S did not work, I remember I only got one channel output. In hindsight, I think I should have set it for 16 bit right justified.

Quote:
Originally Posted by atomcf View Post
Would the SDATA, BICK, LRCK, AOUTR & AOUTL pins be the only one I'd need to connect, or would I have to connect a powersource somewhere? I have no idea how to work two AK4309AVM in a differential mode, but I guess for that I should be migrating to the DAC section of the site, haha, but that's a plan for another day. See you soon!

I'll let you all know how it goes.
You'd need more, but I not sure what the application circuit should be if you were to build it standalone.

Last edited by emuman100; 6th June 2012 at 10:18 PM.
  Reply With Quote
Old 5th July 2012, 08:02 PM   #2737
diyAudio Member
 
Join Date: Jun 2010
Default Orientation of caps + - to soldering pads.

Question concerning soldering in caps. I've done the output stage mod and it works fine. But I'm not sure of the orientation of the caps. Which lead should go to pad 15 and 16? The longer (+) or shorter (-)? Presently the longer (+) are solder to the pads.

Thanks much.
Marvin
  Reply With Quote
Old 5th July 2012, 08:36 PM   #2738
diyAudio Member
 
Join Date: Oct 2006
Location: Cambridge, UK
Default Why do we do it

Quote:
Originally Posted by Puffin View Post
Tief. I hope I can sum up the reason for this thread in a few words. I can only speak for me, but the attraction was :-
1. Can be bought for as little as 5 ($10) from ebay or similar.
2. They were never intended to be serious CD players.
3. In relation to 2. above, they sound better than anyone would have expected.
4. They can be tweaked to give better results and if you kill one, there is always another available to buy.
5. For me it was a bit of fun that is surprisingly good to listen to.
Absolutely ... it's one up for the little man!

George
  Reply With Quote
Old 5th July 2012, 08:42 PM   #2739
Puffin is offline Puffin  United Kingdom
diyAudio Member
 
Join Date: Feb 2006
Location: U.K
George, have you done the 10k output resistor mod. If not it is a must IMO. I think this has more effect than any of the other mods.

Rob.
  Reply With Quote
Old 5th July 2012, 08:44 PM   #2740
Banned
 
Join Date: Jun 2011
Blog Entries: 1
Quote:
Originally Posted by Puffin View Post
George, have you done the 10k output resistor mod. If not it is a must IMO. I think this has more effect than any of the other mods.

Rob.
Rob can you please gimme a link about this mod you mentioned?
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Playstation CD Player Beau Digital Source 2 19th March 2004 08:59 PM


New To Site? Need Help?

All times are GMT. The time now is 11:21 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2