electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Articles  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links  |  Store
Forum with support of Syndicator RSS
 FAQFAQ   CalendarCalendar   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   LinksLinks
 RegisterRegister   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in  Chat RoomChat Room 
Live streaming at radio.electro-music.com

  host / artist show at your time
  Jez Adventures in Sound
Please visit the chat
 Forum index » DIY Hardware and Software » Microcontrollers and Programmable Logic
24 Bit I2S Stereo DAC up to 200 KHz SR
Post new topic   Reply to topic Moderators: State Machine
Page 1 of 1 [7 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
JovianPyx



Joined: Nov 20, 2007
Posts: 1236
Location: West Red Spot, Jupiter
Audio files: 158

PostPosted: Fri Jan 14, 2011 11:01 am    Post subject: 24 Bit I2S Stereo DAC up to 200 KHz SR Reply with quote  Mark this post and the followings unread

http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,719,859&Prod=PMOD-I2S

This is the same DAC circuit designed by Eric Brombaugh that I used in several of my FPGA synths. It is capable of up to 200 KHz sample rate. It will plug into a "standard" 6 pin Digilent port which appears on many devices including many FPGA development boards.

I post this only as a heads up to those looking for a stereo DAC with lots of bits and reasonably high sample rate. I do not work for Digilent.

_________________
FPGA, dsPIC and Fatman Synth Stuff

Time flies like a banana.
Fruit flies when you're having fun.
BTW, Do these genes make my ass look fat?
corruptio optimi pessima
Back to top
View user's profile Send private message Visit poster's website
mhelin



Joined: Feb 07, 2008
Posts: 8
Location: Finland

PostPosted: Sat Jan 22, 2011 4:10 am    Post subject: Reply with quote  Mark this post and the followings unread

Circuit is the same but the pinout is different. Order of the DAC clock and data pins is mirrored in the digilent version.
Back to top
View user's profile Send private message
JovianPyx



Joined: Nov 20, 2007
Posts: 1236
Location: West Red Spot, Jupiter
Audio files: 158

PostPosted: Sat Jan 22, 2011 6:06 am    Post subject: Reply with quote  Mark this post and the followings unread

True that. Eric laid out his board with components on both sides. Digilent reworked the board to put all components on one side. In the process, pins were changed. This is easy to deal with via the UCF file.
_________________
FPGA, dsPIC and Fatman Synth Stuff

Time flies like a banana.
Fruit flies when you're having fun.
BTW, Do these genes make my ass look fat?
corruptio optimi pessima
Back to top
View user's profile Send private message Visit poster's website
sneakthief



Joined: Jul 24, 2006
Posts: 529
Location: Berlin

PostPosted: Sun Jan 23, 2011 2:17 am    Post subject: Reply with quote  Mark this post and the followings unread

Hope this isn't a thread-hijack...

For anyone who wants to do 2 stereo I2s in/outs via usb, check this out:

http://www.minidsp.com/onlinestore/details/64/14/i/o-cards/ministreamer

(it only goes up to 24/96 though)

Now if there were only a simple USB/Firewire to multichannel audio I2S interface!

I was hoping to diy some multichannel adc/dac's (ie. 8in/8out) but the only readily available "solution" to bringing that many I2S channels in and out of a computer is either:

1. buying an expensive dev board (eg. Dice II/III) or

2. converting it to ADAT (http://electronics.dantimax.dk/Kits/Digital_audio/index.html) then bringing that to a pc audio interface device that has ADAT in and out.

The costs for both add up quickly, making proper audio interfaces look like much more attractive alternatives to the diy-route.

_________________
Sneak-Thief - raw electrofunk
Back to top
View user's profile Send private message Visit poster's website
cloudscapes



Joined: Feb 09, 2004
Posts: 99
Location: Montreal

PostPosted: Sun Jan 23, 2011 9:08 pm    Post subject: Reply with quote  Mark this post and the followings unread

sneakthief wrote:

(it only goes up to 24/96 though)


only? I have to work really hard going above 8/14 on my own projects! Very Happy

_________________
Sonic Crayon DIY effects lab
Back to top
View user's profile Send private message Visit poster's website
sneakthief



Joined: Jul 24, 2006
Posts: 529
Location: Berlin

PostPosted: Mon Jan 24, 2011 2:04 am    Post subject: Reply with quote  Mark this post and the followings unread

cloudscapes wrote:
sneakthief wrote:

(it only goes up to 24/96 though)


only? I have to work really hard going above 8/14 on my own projects! Very Happy


Hey, 8bit / 14KHz sounds great to me! I just though I'd point that out since the title of the thread was "up to 200 KHz" Wink

_________________
Sneak-Thief - raw electrofunk
Back to top
View user's profile Send private message Visit poster's website
mhelin



Joined: Feb 07, 2008
Posts: 8
Location: Finland

PostPosted: Mon Jan 24, 2011 2:58 pm    Post subject: Reply with quote  Mark this post and the followings unread

If all you need is a multichannel DAC then you might be interested on this one:

http://www.asus.com/product.aspx?P_ID=SzSNJFIgevnog69P

Not bad regarding the price (< $50).
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic Moderators: State Machine
Page 1 of 1 [7 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » DIY Hardware and Software » Microcontrollers and Programmable Logic
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
e-m mkii

Please support our site. If you click through and buy from
our affiliate partners, we earn a small commission.


Forum with support of Syndicator RSS
Powered by phpBB © 2001, 2005 phpBB Group
Copyright © 2003 through 2009 by electro-music.com - Conditions Of Use