S/PDIF User bit - 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 30th September 2002, 12:02 AM   #1
diyAudio Member
 
Join Date: Oct 2000
Location: Sunnyvale, CA
Default S/PDIF User bit

I was moving along in a DAC project that used the user bit to get various info (volume, etc.) from a remote. I had the idea that I would strip the user bit further upstream and insert my own data on said bit.

It then occurred to me that I don't know what that bit is used for (other than the non-descript user data). Does anyone know of valuable data to a DAC I would be clobbering? I couldn't find any concrete examples.
  Reply With Quote
Old 30th September 2002, 02:30 AM   #2
Banned
 
Join Date: Sep 2002
Location: usa
Default User bit

I believe that is what the user bit is for Read the Crystal Semiconductor data sheets for the CS8412.

http://www.crystal.com

Guy
  Reply With Quote
Old 1st October 2002, 07:37 PM   #3
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
Default Re: S/PDIF User bit

Quote:
Originally posted by ebrewste
It then occurred to me that I don't know what that bit is used for (other than the non-descript user data). Does anyone know of valuable data to a DAC I would be clobbering? I couldn't find any concrete examples.
The user bit is for you, sort of speaking. A normal DAC doesn't pay any attention to this bit only the "C" bit.

I have a small connector on my CD, DENON DCD-1500 from 1986. Sub text? Or? This was used for something and I think it was the user bit was involved here. Can anybody fill in?

Despite the fact that the gentleman above is banned, he has a point. Check the datasheets of CS8402/12/04/14 etc, they say something.

http://www.crystal.com/design/produc...etail.cfm?d=54
http://www.crystal.com/design/produc...etail.cfm?d=57
http://www.crystal.com/design/produc...ail.cfm?d=1005
__________________
/Per-Anders (my first name) or P-A as my friends call me
Super Regulator SSR03 Group buy
  Reply With Quote
Old 2nd October 2002, 03:23 AM   #4
diyAudio Member
 
Join Date: Oct 2000
Location: Sunnyvale, CA
Guy et al and peranders, thanks for the replies. I must admit that in doing past projects with the 8414 I never understood what the user bit was used for in existing products. I always supposed that it was used in cd text and other similar features.

I guess I'll be reading for a while...
  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
New user maxmix69 Introductions 5 23rd March 2009 12:04 PM
New User dbart43 Introductions 1 26th August 2007 06:52 PM
S/PDIF Optical to S/PDIF RCA Replacement PrecisionAudio Digital Source 2 11th February 2007 09:35 PM
46 tube user 9900778 Tubes / Valves 8 30th May 2005 11:51 AM
S/pdif borges Digital Source 9 5th March 2005 12:22 AM


New To Site? Need Help?

All times are GMT. The time now is 04:11 PM.


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