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Input/output cells with localized clock routing

  • US 20060071691A1
  • Filed: 09/30/2004
  • Published: 04/06/2006
  • Est. Priority Date: 09/30/2004
  • Status: Active Grant
First Claim
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1. A computer-readable medium having stored thereon a data structure defining circuitry for instantiation on a semiconductor die, the data structure comprising:

  • a. first data representing a cell defined to include;

    i. a clock input port to the cell;

    ii. receive circuitry having a clock node;

    iii. a first clock path extending from the clock input port to the clock node;

    iv. a clock output port from the cell; and

    v. a second clock path extending from the clock input port to the clock output port; and

    b. second data defining;

    i. a first bounding box on the semiconductor die in which to instantiate a first instance of the cell; and

    ii. a second bounding box on the semiconductor die in which to instantiate a second instance of the cell, wherein the clock output port of the first instance of the cell is coupled to the clock input port of the second instance of the cell.

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