Hacking the CM6632A-based Asus Xonar U7 - 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
Thread Tools Search this Thread
Old 24th February 2014, 07:41 AM   #1
diyAudio Member
steph_tsf's Avatar
Join Date: Mar 2008
Default Hacking the CM6632A-based Asus Xonar U7

Hello, has anyone tried to grab the four I2S streams coming from the CM6632A chip inside the Asus Xonar U7 USB-audio attachement ?

Let's be 100% modular. Say we allocate one DSP+DAC module to each speaker. This way, in case there are six speakers, we need six DSP+DAC modules.
Each DSP chip could be a PIC32MX1, a PIC32MZ, a STM32F4 or an Infineon XMC4000.
We need two I2S at the output, for splitting the audio channel into four channels.
The DACs could be anything like two ES9023.
The audio clock would be centralized, one quartz acting as master in the asynchronous audio modality.
Each DSP+DAC module could be credit-card sized.
One could stack eight DSP+DAC modules, using four straps for selecting one of the four I2S streams, plus one strap for telling the DSP if we want to process the left or the right signal.

Some more hardware would grab the SPI or I2C acting inside the Asus Xonar U7, for defining the listening volumes.

Is this feasible?
Can somebody post a picture of the PCB of the Asus Xonar U7, especially the region between the CM6632A and the four stereo DACs ?
Is galvanic isolation provided by the Asus Xonar U7?
  Reply With Quote
Old 27th January 2015, 06:59 AM   #2
diyAudio Member
Join Date: Jan 2011
ASUS Xonar U7 USB SoundCard Review
  Reply With Quote


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
Asus Xonar St as bridge only... n0vtz PC Based 3 13th September 2012 05:07 AM
Asus Xonar Essence ST overheating? barner PC Based 3 31st July 2012 01:27 PM
Asus Xonar D2X for an active crossover ashok Multi-Way 1 30th August 2011 09:24 PM
New Asus Xonar Essence STX Drivers Brian Kingsbury PC Based 6 9th March 2011 10:52 AM
Asus Xonar mod ionutzxpo PC Based 0 20th April 2010 07:56 PM

New To Site? Need Help?

All times are GMT. The time now is 02:26 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.
Copyright 1999-2015 diyAudio

Content Relevant URLs by vBSEO 3.3.2