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Old 21st July 2005, 10:49 AM   #1
Franz G is offline Franz G  Switzerland
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Default Questions CS8412 - PMD100 - TDA1541A

I am planning an external 8 x oversampling DAC, SPDIF input, based on CS8412 receiver, PMD100 Filter and a TDA1541A DAC.

Actually, I am preparing a block diagram about the mode setup and the interconnections of this three chips.

As I am not an EE, I have now (at least) two important questions:

1. Is the interconnect between PMD100 and TDA1541A correct?
2. I dont know, where to feed in what frequencies from the XO clock. Just know, M0 has to be 1 to set the CS8412 in "slave" mode.

Every help is very welcome!

Franz
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Old 21st July 2005, 04:07 PM   #2
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Do you have a PMD-100 ... and more to the point, do you have an extra?
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Old 21st July 2005, 05:40 PM   #3
Franz G is offline Franz G  Switzerland
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Sorry, I just have one PMD100 and I hope, it is still working. See here:

http://www.diyaudio.com/forums/showt...268#post683268

Franz
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Old 21st July 2005, 07:08 PM   #4
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Default Re: Questions CS8412 - PMD100 - TDA1541A

Quote:
Originally posted by Franz G

1. Is the interconnect between PMD100 and TDA1541A correct?
As connected, so long as the CS8412 in fmt 0, it will work.

Quote:

2. I dont know, where to feed in what frequencies from the XO clock. Just know, M0 has to be 1 to set the CS8412 in "slave" mode.
When the CS8412 is in slave mode, fmt 1, MCLK is still an output, so you will have to derive FSYNC and SCLK from your XO module.
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Old 22nd July 2005, 07:27 AM   #5
Franz G is offline Franz G  Switzerland
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Thanks for your answer, rfbrw!

I am still not sure about the frequencies, about the (simple?) math behind it

Let's resume my actual understanding:

I will set the CS8412 to fmt 1 (M0 = high), to have FSYNC and SCLK as input and feed them from a external clock.

Is it correct, to derive 44.1kHz to FSYNC and 5.6448MHz to SCK? Will this result in 8x oversampling?

Kind regards
Franz

P.S.
Here a foto of the future enclosure, psu, input section and display: a burned out Classé DAC-1 (with additional fuses in the psu )
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Old 22nd July 2005, 11:38 AM   #6
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FSYNC is Fs i.e 44K1Hz and SCK is 64Fs. In standalone mode the PMD100 will do only 8x oversampling.
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Old 23rd July 2005, 08:13 AM   #7
Franz G is offline Franz G  Switzerland
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Many thanks for your input!

Now, I feel like having enough information, to design a pcb.

Kind regards
Franz
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Old 24th November 2005, 11:51 AM   #8
gillib is offline gillib  Austria
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Can You send me Your circuit if it is ready. I also do have an unused PMD100.
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Old 24th November 2005, 04:47 PM   #9
Zoran is offline Zoran  Serbia
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Hi
If You like oversampling that is ok
but maybee You should leave the room for
just 2x oversampling in stand alone mode PMD100?
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Old 25th November 2005, 09:18 AM   #10
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Quote:
Originally posted by Zoran
Hi
If You like oversampling that is ok
but maybee You should leave the room for
just 2x oversampling in stand alone mode PMD100?
No 2x in standalone mode.
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