Hi,
I have a Benchmark DAC with a good quality external clock. I am looking for a way to sync the Raspberry Pi spdif output to the Benchmark's external clock. Is this possible with the HifiBerry Digi? If not, any plans to support this in the future?
Many thanks,
Vincent
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HiFiBerry team Hi Vincent,
with the current Digi this is not possible. We have some ideas for high-end versions. However these are not our first priority at the moment. Can you tell me more about your DAC. How does it output the clock. Any datasheets?
Best regards
Daniel -
godofearth Thanks Daniel, I've sent them an email to ask. -
HiFiBerry team Is it this one:
http://benchmarkmedia.com/products/benchmark-dac1-hdr-digital-to-analog-converter
As far as I can see it does not have a clock output.
Best regards
Daniel -
godofearth Hi Daniel - yes that's the one.
I've also just got a response back from the Vendor confirming there is no output clock on the DAC.
Apologies, I must have gotten confused over the external clock feature on my current sound card! (Which must be syncing to the spdif input of the sound card instead of the DAC) Sorry for the confusion.
Many thanks,
Vincent -
Todd Schmid look at this dac:
http://mytekdigital.com/hifi/products/stereo-192dsd-dac/
The output is call work clock
Data rate is 44.1 I think or greator -
HiFiBerry team Yes, this is a word clock which runs at the sampling rate. It might be ok to sync devices, but it is not really optimal as an input for a PLL as the frequency is very low.
External clock should have at least 64xwordclock or even more for a low-jitter PLL.
Best regards
Daniel
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