Possible to connect something to a SAA7000 ?

00940 · 29th October 2005, 05:17 PM

Beside a useless SAA7030 of course...

Datasheets for the SAA70*0 serie were posted here : http://tube.fw.hu/ , so I had to have a look (since I own a cd350 gathering dust). The digital chain is described as such : the SAA7010 demodulates the data, the SAA7020 detects and corrects the errors, the SAA7000 interpolates what couldn't be corrected and separates the data into left and right.

The datasheets say that :

- the SAA7020 is connected to the SAA7000 by "16bit serial data (two's complement)".
- the SAA7000 can output data in those formats : "offset binary or two's complement, 14 or 16bit".
- the output of the SAA7000 is controlled by what is sent by the SAA7020.

Now, I'm rather hopeless when it comes to digital formats. But my questions are :

- I suppose we have to connect any filter or dac after the SAA7000 ?
- Is there anything worth mentionning we could put there ?
- Can we change the output format to something more usable ?
- How do we actually control what is output by the SAA7000 ? I cannot find it in the SAA7020 datasheet.

Lots of questions I'm affraid. But thanks for any answer

TDA1540 · 30th October 2005, 01:47 AM

remove saa7030

rfbrw · 5th November 2005, 05:09 AM

Quote:

Originally posted by 00940

- I suppose we have to connect any filter or dac after the SAA7000 ?

Yes

Quote:

- Is there anything worth mentionning we could put there ?

NPC SM5842/3/7 - Needs a cut, a strap, a new clock and a clock divider in addition to the necessary connections

Serial input digital filters and SPDIF transmitters - Needs a good few 74/4000 packages or a CPLD/FPGA dependng on your approach.

Quote:

- Can we change the output format to something more usable ?

Yes

Quote:

- How do we actually control what is output by the SAA7000 ? I cannot find it in the SAA7020 datasheet.

Pin38.

Uchi Deshi · 14th April 2006, 12:32 PM

Very simple is connecting SAA7000 with AD1851. You only need change format from binary offset to two`s complement and add clock inventer.

martinjufer · 24th May 2006, 08:11 AM

Hello

But is it possible to connect a receiver chip to a saa7000?

It looks straightforward to connect a saa7000 to a dac chip, but how do I convert the i2s data to the 16-bit serial data, the saa7000 needs for input?

Anyone figured out a logic to do that?

the saa7000 needs a clock and a data stream, but the words in the data are separated by gaps?!?

(grübel, grübel)

Martin

rfbrw · 24th May 2006, 10:17 AM

There is no logical reason to connect a receiver to the SAA7000.

martinjufer · 25th May 2006, 06:28 PM

Do you know another chip that separates serial data into left and right channel binary offset data, for feeding discrete channel information to the tda1514a?

rfbrw · 26th May 2006, 03:25 AM

The DF1700/SM5813 and PMD100 oversampling filters will perform the task you require.

martinjufer · 26th May 2006, 09:12 AM

Great!

That solves many problems!

Sincere Thanks!

Martin

29th October 2005, 05:17 PM	#1
00940 diyAudio Member Join Date: Sep 2003 Location: Paris	Possible to connect something to a SAA7000 ? Beside a useless SAA7030 of course... Datasheets for the SAA70*0 serie were posted here : http://tube.fw.hu/ , so I had to have a look (since I own a cd350 gathering dust). The digital chain is described as such : the SAA7010 demodulates the data, the SAA7020 detects and corrects the errors, the SAA7000 interpolates what couldn't be corrected and separates the data into left and right. The datasheets say that : - the SAA7020 is connected to the SAA7000 by "16bit serial data (two's complement)". - the SAA7000 can output data in those formats : "offset binary or two's complement, 14 or 16bit". - the output of the SAA7000 is controlled by what is sent by the SAA7020. Now, I'm rather hopeless when it comes to digital formats. But my questions are : - I suppose we have to connect any filter or dac after the SAA7000 ? - Is there anything worth mentionning we could put there ? - Can we change the output format to something more usable ? - How do we actually control what is output by the SAA7000 ? I cannot find it in the SAA7020 datasheet. Lots of questions I'm affraid. But thanks for any answer __________________ Ben.

14th April 2006, 12:32 PM	#4
Uchi Deshi diyAudio Member Join Date: Apr 2006 Location: Poland	Possible to connect something to a SAA7000 Very simple is connecting SAA7000 with AD1851. You only need change format from binary offset to two`s complement and add clock inventer.

24th May 2006, 08:11 AM	#5
martinjufer diyAudio Member Join Date: Jul 2005 Location: Zürich, Switzerland	Connect something to saa7000 Hello But is it possible to connect a receiver chip to a saa7000? It looks straightforward to connect a saa7000 to a dac chip, but how do I convert the i2s data to the 16-bit serial data, the saa7000 needs for input? Anyone figured out a logic to do that? the saa7000 needs a clock and a data stream, but the words in the data are separated by gaps?!? (grübel, grübel) Martin

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30th October 2005, 01:47 AM	#2
TDA1540 diyAudio Member Join Date: Feb 2004 Location: Ehv	remove saa7030

24th May 2006, 10:17 AM	#6
rfbrw diyAudio Member Join Date: Oct 2001 Location: .	There is no logical reason to connect a receiver to the SAA7000.

25th May 2006, 06:28 PM	#7
martinjufer diyAudio Member Join Date: Jul 2005 Location: Zürich, Switzerland	Do you know another chip that separates serial data into left and right channel binary offset data, for feeding discrete channel information to the tda1514a?

26th May 2006, 03:25 AM	#8
rfbrw diyAudio Member Join Date: Oct 2001 Location: .	The DF1700/SM5813 and PMD100 oversampling filters will perform the task you require.

26th May 2006, 09:12 AM	#9
martinjufer diyAudio Member Join Date: Jul 2005 Location: Zürich, Switzerland	Great! That solves many problems! Sincere Thanks! Martin

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