WCLK and LRCK are same?0 - diyAudio
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Old 23rd April 2014, 06:32 PM   #1
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Default WCLK and LRCK are same?0

Is WCLK is 2Fs and LRCK is Fs?

I am planning to use DIR9001 as receiver for discrete ladder dac but I see the output from DIR9001 is LRCK and the discrete ladder dac is WCLK and I found the relation between them on the forum and found that..

WCLK is 2Fs and LRCK is Fs

how do i convert LRCLK to WCLK?

im using the following schematic..


want to use the DIR9001 as receiver
http://electronics-diy.com/schematic..._Audio_DAC.jpg

Dac as..
http://www.sonicillusions.co.uk/images/dac18.png

please tell me how to do it so that I can get the dac executed...
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Old 23rd April 2014, 07:05 PM   #2
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please help me in doing this?
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Old 23rd April 2014, 07:09 PM   #3
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WCLK (Word CLocK) and LRCK (Left Right ClocK) are different names for the same signal. You should be able to connect the two pins directly together.

Where did you read that WCLK is 2Fs?
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Old 23rd April 2014, 07:13 PM   #4
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Word clock line - also called word select (WS) or left right clock (LRCLK)
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Old 23rd April 2014, 07:15 PM   #5
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so it means the above circuits joining the output from the DIR9001 and the ladder dac should work isnt it?

Here I found somebody saying about WCLK and LRCK
LRCK WCLK BCLK DATA XTAL = too many signals ?
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Old 23rd April 2014, 07:18 PM   #6
oshifis is offline oshifis  Hungary
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The resistors in the discrete ladder DAC should be extremely low tolerance in order to be monotonic.
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Old 23rd April 2014, 07:20 PM   #7
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yeah ill take care of the precision...

But i was still thinking that can we make it 16 bit instead of 18 just to reduce the MSB resistor tolerances and a the same time making it more simple...
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Old 23rd April 2014, 08:46 PM   #8
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Quote:
Originally Posted by rhythmsandy View Post
so it means the above circuits joining the output from the DIR9001 and the ladder dac should work isnt it?...
Correct, it should present no problem.
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Old 23rd April 2014, 11:40 PM   #9
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The RCLK input of the shift registers is effectively double the frequency of the WCLK input.
Perhaps that's where the reference to 2Fs comes from.
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Old 24th April 2014, 04:48 AM   #10
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I see only one channel dac is in the circuit so what about the other channel? How do I get the data for the second channel?
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