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Re: Thomas some answers

Posted by ThomasPf (A) on October 28, 2004 at 09:53:05

In Reply to: Thomas some answers posted by Gordon Rankin on October 28, 2004 at 09:29:01:

Thanks Gordon

Now we are getting closer to what I was hoping for. So in your case you do actually only use the local clock to drive the flow of data from the PC? Do you use the standard system supplied USB audio driver or do you ship with your own?

After quickly scanning the PCM2707 manual it looks like this solution is using isochronous mode and extracts the clock from this signal with the changes moderated by an analog PLL. Then it outputs a synchronous S/PDIF signal which then will have to be extracted and reclocked again before handed to the actual DAC chip. What exactly is the purpose of this approach? This is not liekly to reduce jitter, is it?

Cheers

Thomas

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