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anbello
 Post subject: USB audio class 2.0
PostPosted: Wed Oct 08, 2008 1:45 pm 
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Sheep

Joined: Sat Aug 13, 2005 11:20 pm
Posts: 26
Location: Italy
To my knowledge the first hardware implementation of USB audio class 2.0:
http://www.cmedia.com.tw/?q=en/USB/cm6620

For info on USB audio class 2.0:
http://www.usb.org/developers/devclass_ ... _final.zip

ciao
andrea
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peufeu
 Post subject: Re: USB audio class 2.0
PostPosted: Mon Oct 20, 2008 6:06 pm 
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Cow
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Joined: Fri Oct 20, 2006 11:04 pm
Posts: 467
That is very interesting. Finally they fixed USB audio.

yes, I would like to use the CM6620 chip, it would simplify the problem a lot. However I probably won't be able to use it, because :

- where can I get it ? apparently nowhere.
- no docs
- since it's from c-media, it probably has some proprietary **** in it, like you must send some secret code to unlock the "premium content" digital ouputs, they've been known to do this in the past...

Perhaps the FTDI USB chip that I want to use can be coerced into looking like a USB2 audio device class as per your paper ? But there are no drivers available anyway (yet)...
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