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Old 4th November 2006, 11:40 PM   #1
Dejak is offline Dejak  Finland
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Join Date: Dec 2004
Location: Finland
Default New DAC Project

Hello Folks

I'm making new dac, and the chip Iím going to use is PCM1794. The idea is to route X-Fi soundcard data and clock directly to the PCM1794, so I can avoid S/Pdif receiver. Iím going to build the DAC to the external box and I think Iím going to use 4-pair data cable for connection .
Should I buffer data and clock before routing it to the DAC? (what chip should I use for buffering?)

Another method is to use Toslink, but what are the disadvantages for this connection? (I knowÖ 4 cables, but that is my personal problem, ok?) Should I buffer coming data/clock before routing it to the toslink?

What is the disadvantage's for this kind of connection?

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Old 5th November 2006, 01:51 AM   #2
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Join Date: Jun 2006
If you not going to use S/PDif, I assume you intend using the I2S signals from before the DAC in the sound card? You gonna have to buffer these, I'm afriad. Easily done using LVDS, checkout TI
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