Digital Volume Contol - CS3318 - MAX5440

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Hi all, I'm designing a multi channel volume contol for my 7.1 Power amp. Hoping to use the:

CS3318: http://pdf1.alldatasheet.com/datasheet-pdf/view/167484/CIRRUS/CS3318.html
As master control.

MAX5440: http://datasheets.maxim-ic.com/en/ds/MAX5440.pdf
As balance and indavidual(per 2 channel) volume control.

contolled all with rotary encoders.


Firstly, anyone had any experence with these devices? How do they sound?

Can the CS3318 work well as a preamp? Or do i have to have a seperate stage?

I havnt got a clue on programing a microcontroller to recive grey code and send I2C to the CS3318. Can any one give an example code? I can work with C as i have little knowledge on it and I'm currently learning it. I have a PIC development enviroment and a programmer so i can have a try.

I'll post a block diagram of my idea when I get my scanner installed.

Thanks =].
 
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No need to use two chips, the CS3318 can set each channel individually so one chip can do level, individual level offset, balance etc. It's just a matter of setting the individual channels.

On my website you see an example of how this *could* be done. I'm using the SPI interface, but that's not significant.
Audio quality is superb (that's what others tell me too).

Jan Didden
 
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