How to implement dual PCM56 from CS8412

Van Hai · 23rd October 2004, 12:20 PM

Hi Forum,

I build a DAC with dual PCM56P after i read the PCM56 data sheet, still i do not understand how to make it one for left and one for right. From CS8412 i need to use mode 5. Should i paralell them or do i need something to make them into left and right?. I prefer to run on battery.
please give some direction that would help. thanks.

Cheer,
Van Hai

rfbrw · 23rd October 2004, 05:40 PM

The digital filter splits the data into two channels.

Van Hai · 24th October 2004, 02:21 PM

Thank rfbrw,

can i use SM5807EP? I have that chip but i need to search the data for it to know the pin in and out. Does any one have the data sheet?

regards,
Van Hai

rfbrw · 25th October 2004, 07:59 PM

If it is a digital filter then probably. I can't give a definite reply as I don't have the datasheet.

jean-paul · 25th October 2004, 10:30 PM

I think I have it on paper. I'll try to scan it the next days.

cdm9 · 26th October 2004, 02:51 AM

I find something that may help.

http://www.y-min.or.jp/~nob/Audio/DAC/DAC02.htm

Van Hai · 26th October 2004, 01:56 PM

Jean-Paul, thanks hope u can help, i've been search the net but no where to be found.

cdm9, the link seem do not work but thank you anyway.

Van Hai

cdm9 · 26th October 2004, 06:18 PM

Oops!!!

http://www.y-min.or.jp/~nob/Audio/DAC/DAC03.html

rfbrw · 26th October 2004, 08:00 PM

Quote:

Originally posted by cdm9
Oops!!!

http://www.y-min.or.jp/~nob/Audio/DAC/DAC03.html

Be aware that if you connect the PCM56 in this manner you will have a delay between the dacs. It will be like the early CD players that only had one dac.

ThorstenL · 26th October 2004, 10:48 PM

Konnichiwa,

Quote:

Originally posted by rfbrw
Be aware that if you connect the PCM56 in this manner you will have a delay between the dacs. It will be like the early CD players that only had one dac.

And be also aware that the delay will be 22.7uS. In that time sound travels approximatly 7.8mm. So if you wish to avoid the delay simply position your head such that the speaker which receives the non-delayed signal is 7.8mm further away from your head than the other speaker.

This of course assumes that you reliably position your speakers and your head for listening to within a reasonably small fraction of 1mm, if you don't and you fail to hold sufficiently still when listening I suspect the whole argument is moderatly academic.

Sayonara

23rd October 2004, 12:20 PM	#1
Van Hai diyAudio Member Join Date: Oct 2003 Location: HOng Kong	How to implement dual PCM56 from CS8412 Hi Forum, I build a DAC with dual PCM56P after i read the PCM56 data sheet, still i do not understand how to make it one for left and one for right. From CS8412 i need to use mode 5. Should i paralell them or do i need something to make them into left and right?. I prefer to run on battery. please give some direction that would help. thanks. Cheer, Van Hai

25th October 2004, 10:30 PM	#5
jean-paul diyAudio Moderator Emeritus Join Date: Sep 2002 Location: The Netherlands	I think I have it on paper. I'll try to scan it the next days. __________________ It's only audio

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23rd October 2004, 05:40 PM	#2
rfbrw diyAudio Member Join Date: Oct 2001 Location: .	The digital filter splits the data into two channels.

24th October 2004, 02:21 PM	#3
Van Hai diyAudio Member Join Date: Oct 2003 Location: HOng Kong	Thank rfbrw, can i use SM5807EP? I have that chip but i need to search the data for it to know the pin in and out. Does any one have the data sheet? regards, Van Hai

25th October 2004, 07:59 PM	#4
rfbrw diyAudio Member Join Date: Oct 2001 Location: .	If it is a digital filter then probably. I can't give a definite reply as I don't have the datasheet.

26th October 2004, 02:51 AM	#6
cdm9 diyAudio Member Join Date: Jul 2004 Location: Hong Kong	I find something that may help. http://www.y-min.or.jp/~nob/Audio/DAC/DAC02.htm

26th October 2004, 01:56 PM	#7
Van Hai diyAudio Member Join Date: Oct 2003 Location: HOng Kong	Jean-Paul, thanks hope u can help, i've been search the net but no where to be found. cdm9, the link seem do not work but thank you anyway. Van Hai

26th October 2004, 06:18 PM	#8
cdm9 diyAudio Member Join Date: Jul 2004 Location: Hong Kong	Oops!!! http://www.y-min.or.jp/~nob/Audio/DAC/DAC03.html

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