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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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In Reply to: Re: Your player already has fairly low jitter measurements posted by Christine Tham on March 16, 2007 at 21:33:57:
<< Have you had any problems switching clocks? >>No. You just have to spend a lot of time figuring out what each chip needs and at what time.
Everything is controlled by a custom-programmed Xilinx FPGA. The Pioneer MPEG decoder board outputs a flag that signifies if the sample rate is a multiple of 44 or 48 kHz. We determine the sample rate (1x, 2x, or 4x) by comparing the word clock against master clock. Then the FPGA sends all the appropriate signals to all the various chips so that we can change sample rates on the fly.
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Follow Ups
- Re: Your player already has fairly low jitter measurements - Charles Hansen 13:29:50 03/17/07 (7)
- Thanks for the explanation - Christine Tham 15:07:35 03/17/07 (6)
- Re: Thanks for the explanation - Charles Hansen 20:53:45 03/17/07 (5)
- Thanks again - Christine Tham 01:56:27 03/18/07 (4)
- Re: Thanks again - Charles Hansen 19:09:27 03/18/07 (3)
- Re: Thanks again - Christine Tham 20:28:24 03/18/07 (2)
- Re: Thanks again - Charles Hansen 08:21:17 03/19/07 (1)
- I would be interested in looking at your results, thanks (nt) - Christine Tham 13:17:32 03/19/07 (0)
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