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DEVICE WITH A PROCESSOR AND A PERIPHERAL UNIT AND METHOD FOR GENERATING AN ACKNOWLEDGMENT SIGNAL

  • US 20080288696A1
  • Filed: 05/19/2008
  • Published: 11/20/2008
  • Est. Priority Date: 05/19/2007
  • Status: Abandoned Application
First Claim
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1. A device comprisinga processor that is clocked by a processor clock signal and is woken up from an idle state, based on an interrupt request, to process the interrupt request in a working state, and after the processing or during the processing of the interrupt request the processor generates an acknowledgment signal synchronous to the processor clock signal;

  • at least one peripheral unit, which is clocked by a peripheral clock signal that runs asynchronously to the processor clock signal, and which sends the interrupt request to the processor synchronously to the peripheral clock signal; and

    a first logic that generates an acknowledgment signal, which is synchronous to the peripheral clock signal, and by which the peripheral unit is informed about the processed interrupt request from the acknowledgment signal synchronous to the processor clock signal.

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