Method for determining timing delays associated with placement and routing of an integrated circuit
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United States of America Patent
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May 13, 1997
Grant Date -
N/A
app pub date -
May 16, 1994
filing date -
May 16, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a method for determining timing delays associated with the placement and routing delays of an integrated circuit. In particular, the present invention determines the area of each region wherein a region includes a group or subgroup of circuit elements for use in designing an integrated circuit. Once the area for each region is obtained, substantially more accurate and more design specific wireload model and net parasitics can be obtained. The wireload models or net parasitics can then be supplied to other CAE tools to create a modified netlist. Moreover, the present invention provides a process which allows the user to account for the RC time constant effects of wire delay on a hierarchical block basis thereby improving the accuracy of the wire placement and routing delay estimate while preserving the performance benefits of a traditional simplified equation.
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