[sdiy] adding more audio inputs to the ATMEL AT91SAM7SE processor

Julian julian at 22host24.com
Tue Apr 1 19:01:57 CEST 2008


After all the talk of microprocessors recently, ive been looking more at the ATMEL AT91SAM7SE ARM unit, as it looks like it has a 
good ammount of fairly easily implamented I/O.

However, that said, i cant work out how easily to add more audio inputs.

Theres a paper ( http://www.atmel.com/dyn/resources/prod_documents/doc6020.pdf ) that shows connection of one or two of the SSC 
interfaces to an audio ADC, but the example is just dealing with two inputs (stereo) whilst, ideally, id like somthing to implament 
further inputs.

The datasheet for the device is availible from atmel (obviously) but theres a copy here too ( 
http://www.farnell.com/datasheets/102193.pdf )

The reason why im looking at the 7SE variant over the 7S is in the hopes of adding sample storage more easily.

As you may have guessed, im a novice at microprocessor implamentation, but im trying to make a start : )

Thanks, Julian



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