CM6631 usb audio interface .... any good ? - Page 10 - diyAudio
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Old 30th December 2012, 04:57 PM   #91
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Join Date: May 2010
Location: Texas
Hi KlipschKid,
I got it to work had 3 problems all nipping at my toes,lol.
A bad switch ,headphone cord(don't loan headphones to your kids),
and wrong drivers,
To make a short story out of this,IF you have one of these boards ,load the setup file form the site first and it will tell you when to connect the board,I never could get windows to find the correct driver manually,lol.but it is working now,sounds good in hardware,now the fun part software,,,,lol.
Thanks to all that post,it helped!
NS

Last edited by noSmoking; 30th December 2012 at 04:58 PM. Reason: stupid spelling
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Old 9th January 2013, 06:38 PM   #92
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I have some question, anybody kwon how to atcivate I2S pins to use CM6631 for recording?
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Old 10th January 2013, 12:57 AM   #93
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Hi,

You'll need to find the pin for spdif in, feed it ttl level spdif, and get a driver and firmware to control it (Asus' should work). Here are the pins.

Click the image to open in full size.

Can you find it ?

If not, quit now.

It's pin 40.

It can be done as this photo from Asus' Website for the Essence One shows inputs, but I wouldn't attempt it because those pins are too small for me to work with. How about you ? Do you know a device with an easy pin out connector ? Is there one on the market ? Have a look on Ebay and Taobao.

Click the image to open in full size.

ASUS - Multimedia- ASUS Xonar Essence One

Last edited by KlipschKid; 10th January 2013 at 01:04 AM.
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Old 10th January 2013, 06:22 AM   #94
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I don't want to use spdif input.
Pins 30, 31, 32, 33 main I2S for recording, and it is my target.
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Old 10th January 2013, 06:47 AM   #95
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I don't think Asus use those pins so you're probably not going to succeed ; unless you can find firmware / driver to control those pins.

ASUS O!Play Essence One PCB | Flickr - Photo Sharing!
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Old 10th January 2013, 07:53 AM   #96
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Probably original C-Media firmware tool generator can anable all features of CM6631 but I don't have
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Old 11th January 2013, 12:50 AM   #97
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If anyone wants to isolate the output of their CM6631, there is a group buy started on this thread :
Amanero Isolator/Reclocker GB
and a little more here:
ackoDAC based on ES9018

roygbiv - email C-Media - tell them you want to develop this aspect of their IC. They might send you the tool if you sign an NDA. If not, then the spdif should work.
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Old 11th January 2013, 07:32 AM   #98
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I think advanced tools are only for big customers like Asus, but I'll try
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Old 14th January 2013, 10:32 PM   #99
azyx is offline azyx  Greece
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CM6631 Datasheet
Attached Files
File Type: pdf CM6631_Datasheet_v0.8.pdf (561.0 KB, 168 views)
File Type: pdf CM6632_0V99-11.pdf (195.5 KB, 155 views)
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Old 14th January 2013, 11:05 PM   #100
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Thank you Azyx !
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