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USB to I2S?
USB to I2S?
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Old 19th April 2006, 04:12 AM   #1
Destroyer OS is offline Destroyer OS  United States
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USB to I2S?
Default USB to I2S?

I was thinking about building a Hag USB.... I could use it's audio out for awhile, and then I could switch over to an external DAC (Peter's premium probably). Well Peter's DAC accepts I2S which is not confentational with Jitter right?

Here is a double check

Does this unit run off of I2S?

No. It only outputs the standard S/PDIF format. No machine out there has I2S outputs. Or inputs, for that matter.





My understanding is this is the only way to go for getting a digital signal out of USB with out jitter issues...

That is a popular myth floating around the DIY forums.

jh
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Old 19th April 2006, 05:26 AM   #2
dsavitsk is offline dsavitsk  United States
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The only chips I know of that output i2s from usb are the pcm2706 and pcm2707. They are pretty simple to use: here are a few projects I've done.

http://www.diyaudio.com/forums/showt...threadid=76821
http://www.ecp.cc/NOS-USB-DAC.html

As for the jitter myth, there has been some good discussion over at diyhifi.org
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Old 19th April 2006, 03:28 PM   #3
pburke is offline pburke  Germany
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USB-I2S with PMC2707:

http://www.dddac.de/ma_dac32.htm

Works like a charm on my older TDA1543 DAC, and you can use it on its own, although I wasn't very impressed with the built-in A-D.

Peter
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