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DAC system clock
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Old 26th September 2009, 07:38 AM   #1
blimp82 is offline blimp82  Denmark
diyAudio Member
Join Date: Jun 2009
Default DAC system clock

hi all

Im looking at the pcm1741, as i would like to make a DAC to convert I2S to audio. And as easy as possible, i may add, as it more a proof of concept than HIFI - just yet.

The PCM17xx together with many others DAC uses a master clock(clk), where the clk is a multiplum[128-1152] of Fs.

What will happen if the clk is not the right multiplum of Fs, for instance: clk is chosen to be 128xFs. But Fs changes from 48 to 44.1. What will happen then, will the music sound terrible?, will the dac crash?

Regards Tobias
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Old 28th September 2009, 03:01 AM   #2
jaycee is offline jaycee  United Kingdom
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Join Date: Apr 2004
Location: Norwich, UK
it won't lock and you will hear nothing, or garbage.
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Old 1st October 2009, 12:08 PM   #3
blimp82 is offline blimp82  Denmark
diyAudio Member
Join Date: Jun 2009

Thanks very much for the answer, I was affride of that....

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