How to implement dual PCM56 from CS8412 - diyAudio
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Old 23rd October 2004, 01:20 PM   #1
Van Hai is offline Van Hai  Hong Kong
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Default 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
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Old 23rd October 2004, 06:40 PM   #2
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The digital filter splits the data into two channels.
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Old 24th October 2004, 03:21 PM   #3
Van Hai is offline Van Hai  Hong Kong
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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
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Old 25th October 2004, 08:59 PM   #4
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If it is a digital filter then probably. I can't give a definite reply as I don't have the datasheet.
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Old 25th October 2004, 11:30 PM   #5
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I think I have it on paper. I'll try to scan it the next days.
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Old 26th October 2004, 03:51 AM   #6
cdm9 is offline cdm9  Hong Kong
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I find something that may help.


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


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Old 26th October 2004, 02:56 PM   #7
Van Hai is offline Van Hai  Hong Kong
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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
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Old 26th October 2004, 07:18 PM   #8
cdm9 is offline cdm9  Hong Kong
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Oops!!!


http://www.y-min.or.jp/~nob/Audio/DAC/DAC03.html
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Old 26th October 2004, 09:00 PM   #9
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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.
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Old 26th October 2004, 11:48 PM   #10
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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
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