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Design security for configurable devices

  • US 7,345,502 B1
  • Filed: 01/17/2006
  • Issued: 03/18/2008
  • Est. Priority Date: 01/17/2006
  • Status: Active Grant
First Claim
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1. An integrated circuit having secured and unsecured operation modes, the integrated circuit comprising:

  • configuration memory for storing configuration data;

    control logic for receiving the configuration data;

    a configuration path comprising a configuration register coupled to the control logic for storing the configuration data in the configuration memory;

    a bypass path comprising a bypass register coupled to the control logic; and

    select logic enabling the selection of one of the configuration path and the bypass path based upon the operation mode of the integrated circuit;

    wherein when the integrated circuit is in the unsecured operation mode, the select logic selects the configuration path, andwherein when the integrated circuit is in the secured operation mode, the select logic selects the bypass path to prevent the configuration data from being accessed.

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