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Error detection on programmable logic resources

  • US 7,310,757 B2
  • Filed: 10/10/2002
  • Issued: 12/18/2007
  • Est. Priority Date: 10/11/2001
  • Status: Expired due to Fees
First Claim
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1. A circuit that detects errors only in configuration data stored on a logic device, the logic device comprising:

  • a first memory in which the configuration data is stored;

    a second memory in which an expected value is stored, wherein the expected value is calculated on the logic device from the configuration data at the time the configuration data is being programmed onto the logic device; and

    check circuitry coupled to the first memory and the second memory to analyze the configuration data stored in the first memory and the expected value stored in the second memory to determine if any values of the configuration data have changed after initial configuration of the first memory.

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