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time taken by ISR?


i am writting device driver for ad1674(adc) based card. here the card
supports timer triggerred and interrupt driven data transfer and other modes
of transfer.the conversion rate of adc chip is 10 micro secs, that means i
can do sampling at the rate of 100K.
after every conversion the adc raises an interrupt.

my question is: what is the amount of time taken by the(in worst case)
interrupt handler to get executed.

thanx in advance

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