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Old 14th May 2003, 10:05 PM   #1
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Default 28 cheep cirrus logic digital audio recievers

Hi, I found these going on ebay, and although I would like to build a DAC, I'm in the middle of trying to get my pre and power amps done first, so if anyone else wants them, have a look;

http://cgi.ebay.co.uk/ws/eBayISAPI.d...tem=2529717240

Also, you can find the data sheet for their replacements below, the only diference is that these ones will not work at 96kHz input, but that is mentioned in the data sheet.

http://www.cirrus.com/en/pubs/proDatasheet/8413-4.pdf
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Old 14th May 2003, 10:22 PM   #2
dhaen is offline dhaen  Europe
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We need a datasheet for the actual device to see if it's DIY usefull.
The previous '11 receiver needed a serial interface to control it.
And why is it obsolete so quickly? Was there a problem?

Cheers,
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Old 14th May 2003, 10:30 PM   #3
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the chips in the data sheet are pin compatable with the CS8411 (well the CS8413 is, the other one is a replacement for the CS8412), the only diference between the models is that they have added the capability to receive 96kHz PCM data, and they canged some fo the output codes to identify this new mode of opperation. Otherwise, as far as I am aware, the chips function in exactly the same way, so you can design from the CS8413 datasheet, but not use the higher data rate signal.

Oh, one more thing, just because the reciever can't decode the 96kHz PCM data, it can still be used for an upsampling DAC, just as long as the input signal is comming from a source operating at 44 or 48 kHz.

I think.
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Old 14th May 2003, 10:32 PM   #4
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Sorry, forgot to mention, if you look on page seven of the data sheet it tels you the differences between the models.
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Old 14th May 2003, 10:35 PM   #5
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Me again, I found a coppy of the correct data sheet, not on the cirrus website, but still the right thing I think. You'll find it below;

http://www.lcaudio.dk/comp/cs8412.pdf
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Old 14th May 2003, 10:47 PM   #6
dhaen is offline dhaen  Europe
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Default Thanks for the link...

Hmm, so is it useful without a processor?
Someone with superior computing power is required...
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Old 14th May 2003, 10:49 PM   #7
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Didn't notice that one, but I guess it couldn't be too hard to get a PIC chip up and running to do the job, especialy if you had enouugh of the things to do 28 boards.

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Old 14th May 2003, 10:58 PM   #8
dhaen is offline dhaen  Europe
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Default Hold on....

I'm not saying it's not feasible. Just not feasible for me (old codger who last wrote code 25 years ago)

BTW what's with the parsnip? and why is it big?

Cheers,
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Old 14th May 2003, 11:02 PM   #9
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Not as bad as it sounds. I am about 6foot three and I have ginger (not red tough ) hair. A while ago, when I was still at school I started arguing with some people who decided to call me a carrot (I'm a little pedantic at times). Arguing that carrots are orange on the bottom, with green on the top, so surely by thier logic I looked more like a parsnip, as I was white, not orange on my bottom half. And it just stuck (to be fair these people were my friends, and it was all my own fault), but I always seem to be able to sign up on forums using that name, so it's kinda useful.
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Old 14th May 2003, 11:06 PM   #10
dhaen is offline dhaen  Europe
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Quote:
I am about 6foot three
I'd better not argue with you then. You've got 4" over me

Cheers,
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