Philips CD931: good or not? - Page 5

stefanobilliani · 17th November 2003, 04:40 PM

Oh , Thanks a lot

Andypairo · 18th November 2003, 05:21 PM

Just to let you know: at last my CD931 arrived!!

Now it's time to play with it

Cheers

Andrea

tbla · 18th November 2003, 06:36 PM

Quote:

Now it's time to play with it

thats exactly what she said 10 minuts agooooooooooooo moon river.....

PA0SU · 3rd March 2008, 09:22 PM

Reading all this about updating CD-players, I have very good results with the old and cheap CD624! The CDM4 is very good, reads all there is. The main board is well designed and the connections for the I2S behind the SAA 7310 are concentrated on a (not mounted) plug. The I2S has the Philips standard: 'justified left with one bit delay'.
The most nice thing is: it has a compete large separate section to build in the new back end and its power supply!

PA0SU · 3rd March 2008, 09:22 PM

The SAA7310 in my CD624 offers I2S with 'left justified with one bit delay' as I stated before.
For the back end I try to use a part of Guido Tent cs. tube DAC. This DAC is equiped with the SM5847AF digital filter which only accepts I2S 'justified right'.
I moved the data 15 bits to the right with a shift register, but is does not work! It could be that the clock from the SAA7310 should be inverted before clocking the shift register.
I think the DACs are missing the sigh-bit, so....
Any suggestions?

philpoole · 4th March 2008, 09:09 PM

Hi,
The circuit posted in the first post of this thread...
Confusion over I2S buffering

...shows how the saa7310 is interfaced to the sm5840 in a CD930, using shift registers for format conversion. Not sure if it helps.

PA0SU · 5th March 2008, 01:39 PM

Please give me the complete 'address'. I can't find it!

philpoole · 5th March 2008, 01:43 PM

Confusion over I2S buffering
Sorry, not sure what happened there.

edit.. tried the old one and that worked for me as well. You are just clicking on the link aren't you?
If you're still stuck, search for sm5840, and click on the thread 'confusion over I2S buffering'.

PA0SU · 5th March 2008, 02:08 PM

OK!
But I'm more dumb than you on this subject. Please look there for some questions of my side.......

PA0SU · 6th March 2008, 07:48 PM

Where can I find the schema/service doc of the CD930?

ESL + MFB = the best of 2 worlds ==> www.by-rutgers.nl

3rd March 2008, 09:22 PM	#44
PA0SU diyAudio Member Join Date: Dec 2006 Location: Eindhoven	CDM4 in the CD624 Reading all this about updating CD-players, I have very good results with the old and cheap CD624! The CDM4 is very good, reads all there is. The main board is well designed and the connections for the I2S behind the SAA 7310 are concentrated on a (not mounted) plug. The I2S has the Philips standard: 'justified left with one bit delay'. The most nice thing is: it has a compete large separate section to build in the new back end and its power supply! __________________ Systems that assume to know too much are more a hindrance than a help. (Software Tools)

3rd March 2008, 09:22 PM	#45
PA0SU diyAudio Member Join Date: Dec 2006 Location: Eindhoven	I2S and the digi-filter SM5847AF The SAA7310 in my CD624 offers I2S with 'left justified with one bit delay' as I stated before. For the back end I try to use a part of Guido Tent cs. tube DAC. This DAC is equiped with the SM5847AF digital filter which only accepts I2S 'justified right'. I moved the data 15 bits to the right with a shift register, but is does not work! It could be that the clock from the SAA7310 should be inverted before clocking the shift register. I think the DACs are missing the sigh-bit, so.... Any suggestions? __________________ Systems that assume to know too much are more a hindrance than a help. (Software Tools)

5th March 2008, 01:39 PM	#47
PA0SU diyAudio Member Join Date: Dec 2006 Location: Eindhoven	Please give me the complete 'address'. I can't find it! __________________ Systems that assume to know too much are more a hindrance than a help. (Software Tools)

5th March 2008, 02:08 PM	#49
PA0SU diyAudio Member Join Date: Dec 2006 Location: Eindhoven	OK! But I'm more dumb than you on this subject. Please look there for some questions of my side....... __________________ Systems that assume to know too much are more a hindrance than a help. (Software Tools)

6th March 2008, 07:48 PM	#50
PA0SU diyAudio Member Join Date: Dec 2006 Location: Eindhoven	Where can I find the schema/service doc of the CD930? ESL + MFB = the best of 2 worlds ==> www.by-rutgers.nl __________________ Systems that assume to know too much are more a hindrance than a help. (Software Tools)


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17th November 2003, 04:40 PM	#41
stefanobilliani diyAudio Member Join Date: Jun 2002 Location: Italy	Oh , Thanks a lot

18th November 2003, 05:21 PM	#42
Andypairo diyAudio Member Join Date: Sep 2002 Location: near Milano , Italy	Just to let you know: at last my CD931 arrived!! Now it's time to play with it Cheers Andrea

4th March 2008, 09:09 PM	#46
philpoole diyAudio Member Join Date: Oct 2004	Hi, The circuit posted in the first post of this thread... Confusion over I2S buffering ...shows how the saa7310 is interfaced to the sm5840 in a CD930, using shift registers for format conversion. Not sure if it helps.

5th March 2008, 01:43 PM	#48
philpoole diyAudio Member Join Date: Oct 2004	Confusion over I2S buffering Sorry, not sure what happened there. edit.. tried the old one and that worked for me as well. You are just clicking on the link aren't you? If you're still stuck, search for sm5840, and click on the thread 'confusion over I2S buffering'.

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