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Accessing multiple user states concurrently in a configurable IC

  • US 8,433,891 B2
  • Filed: 08/27/2010
  • Issued: 04/30/2013
  • Est. Priority Date: 07/15/2005
  • Status: Active Grant
First Claim
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1. A method of accessing an integrated circuit (IC) comprising a plurality of user design state (“

  • UDS”

    ) circuits and a plurality of configurable circuits for configurably performing a plurality of operations, the method comprising;

    addressing the plurality of the UDS circuits concurrently while the IC is performing user-design operations; and

    after addressing the plurality of the UDS circuits, concurrently reading state values stored by the addressed UDS circuits at least a user-design operating frequency while the IC is performing user-design operations.

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