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Old 19th October 2010, 02:06 PM   #11
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Default Digital decoder Pro

There is dedicated kit for this. All glue logic for bit alignment is on the board. Wiring between "digital decoder" and PCM56 is very easy.

Digital Decoder Pro
The digital decoder is a board allowing you to design your own non-oversampling digital to analog converter (NOS). It interfaces easily with chips like PCM1704, PCM1702, PCM56, AD1861...
The digital decoder pro must be followed by an analog conversion board to work. To reach best listening quality, it can be coupled to an external low jitter clock."


Digital decoder pro

The kit is available in PCB only or assembled and tested.
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Old 19th October 2010, 03:11 PM   #12
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How about the "adoption success rate" ? :-D
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Old 19th October 2010, 04:20 PM   #13
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Originally Posted by tritosine View Post
How about the "adoption success rate" ? :-D
At this time it is 100%, and I work to keep this great level
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Old 19th October 2010, 10:44 PM   #14
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Here is glue logic for use between cs8412 and pcm56, it avoids interchannel delay.
It can be found with google.

Click the image to open in full size.
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Old 21st October 2010, 03:08 PM   #15
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Hi Bernhard,

I meant CS8421 not CS8412.
I am also wondering why there is nobody try to combine DIR to CS8421 to TDA1543, since that can solve higher frequency and bits input and down transforming to the spec needed by TDA1543
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Old 22nd October 2010, 06:04 PM   #16
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Since there is no one seems know the answer,
I had tried my self with my nonos TDA1543,
The original circuit was CS8414 to TDA1543 by mode/format 3 i2s out of CS8414
I seperated the traces of LRCLK, BCLK, SDATA between CS8414 and TDA1543
Add CS8421 to be the combination of CS8414 to CS8421 to TDA1543
set every value on the datasheet of CS8421 and add a tcxo of 16.9344 to CS8421 and set 384Fso and 16 bits I2s mode output to TDA1543,
Set slave in input and master in output to be the working condition of CS8421.

Just replace the cs4398 of http://getinthewoodchipper.com/wp-co...tic-Prints.pdf to be TDA1543 according to above setting.

WELL... after two days of working.. no sound at all

WHY>>??

Last edited by Tubeee; 22nd October 2010 at 06:12 PM.
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Old 8th November 2010, 12:31 PM   #17
regal is offline regal  United States
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Quote:
Originally Posted by Bernhard View Post
Here is glue logic for use between cs8412 and pcm56, it avoids interchannel delay.
It can be found with google.

Click the image to open in full size.


What is the top74HC08 doing? it looks like SCK and 5+, or is the 5+ simply signifying the power (VCC) with just a single signal input.output?
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Old 8th November 2010, 02:09 PM   #18
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Lightbulb Stopped clock

Quote:
Originally Posted by regal View Post
What is the top74HC08 doing? it looks like SCK and 5+, or is the 5+ simply signifying the power (VCC) with just a single signal input.output?
It's to keep the clocks synchronously. The clock for the lower DAC is stopped certain periods of the Latch, hence the name "stopped clock" method.

Anyway the method with simply inverting the latch for 1 channel sounded slightly better. This was tried with the AD1865 though.
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Old 8th November 2010, 06:53 PM   #19
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Originally Posted by QSerraTico_Tico View Post
Anyway the method with simply inverting the latch for 1 channel sounded slightly better. This was tried with the AD1865 though.
How can you tell ? You cannot gate the clock with the AD1865.
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Old 8th November 2010, 07:15 PM   #20
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Originally Posted by rfbrw View Post
How can you tell ? You cannot gate the clock with the AD1865.
I did.
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