Is2 possible with this dac? - diyAudio
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Old 8th July 2004, 10:23 PM   #1
wazzup is offline wazzup  Netherlands
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Default Is2 possible with this dac?

Hi,

Recently I have discoverd the virtue of cheap upgrades. I have cleaned all my connectors, renewed some power chords, and guess what? Its noticible quite a lot! The sound has more air.. A lot more.

Now I was thinking of building a cable. A Is2 cable from my cd-pro2 to my dac, but is the even possible? Here is the scematic for my dac, its a Hawk audio dac.

What should I do to get the is2 working?
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Old 8th July 2004, 10:30 PM   #2
wazzup is offline wazzup  Netherlands
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oops bad quality; lets try this:
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Old 8th July 2004, 11:07 PM   #3
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it would look better if you post a gif instead of jpg
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Old 9th July 2004, 12:07 AM   #4
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First you need the datasheet for the dac which appears to be the CS4390. Having got that you need to compare the output format of the CD-Pro2 and the input format of the CS4390 and if necessary change the mode pins on the CS4390. If you want to switch between the CD-Pro2 output and the CS8412 output you may have to change the mode pins of the CS8412.
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Old 9th July 2004, 07:57 PM   #5
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tnx for the post.

I thought it would be as easy as cutting some traces, and hooking it up.

But if the output of the cd pro is the same signal ( ? ) as the cs4290 accepts, then I can "just" hook up the is2 output to the imput receiver of my dac?

Digital just ain`t my thing, so plz; any more thing I should take care of?





btw I don`t have any good resize programs, I can`t get the gif below 300 kb, and make it better then my jpg.
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Old 9th July 2004, 10:34 PM   #6
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Cool I2S and Irfanview

Quote:
Originally posted by wazzup
tnx for the post.
btw I don`t have any good resize programs, I can`t get the gif below 300 kb, and make it better then my jpg.
Hi,
Try www.irfanview.com
Open the image, click on image, then on resize/resample.
I you use the CD-PRO with I2S-output setting you can directly connect to the CS4390 chip if the latter is configured for I2S. See the datasheet of Crystal chip.
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Old 9th July 2004, 10:43 PM   #7
wazzup is offline wazzup  Netherlands
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Ok so its possible


Just some noob questions: what do u mean by "is2 output setting" ? As I know the cd pro just has an output, and no uhhm switches or anything.

I will look into the crystal datasheet, to find out some more. When I fugue it out, I`ll post my findings to see if i`m doing it right.

Tnx Elso.
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Old 9th July 2004, 10:52 PM   #8
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The CD PRO2 could be told by a DSA command from the controller what format it should send to the I2S bus. There are 16 or so different formats it could send.
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Old 9th July 2004, 11:10 PM   #9
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if you mean I2S, the CS4390 does. The CS4390 supports 7 Dataformats. Format 5 and 6 are compatible with I2S.

See Datasheet:
http://www.cirrus.com/en/pubs/proDatasheet/4390.pdf

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Jobstens
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Old 10th July 2004, 04:11 AM   #10
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Quote:
Originally posted by wazzup

I thought it would be as easy as cutting some traces, and hooking it up.
It can be but it will not be very flexible. You need 4 connections from the CDPro2. 384Fs clock,WDCLK,BCLK and SDATA and they correspond to MCLK,LRCLK,SCLK and SDATA on the CS4390.
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