Methodology to optimize hierarchical clock skew by clock delay compensation
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United States of America Patent
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Mar 21, 2006
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app pub date -
Nov 12, 2003
filing date -
Nov 12, 2003
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Abstract
A method for synthesizing a clock distribution system within an integrated circuit for compensating for clock skew within a global or top level clock distribution network begins with allocating at least one delaying circuit within each of functional circuits of the integrated circuit. An intra-functional clock distribution network is fabricated within each of the functional circuits. Once the intra-functional clock distribution network is fabricated, an inter-functional clock distribution network is constructed between each of the functional circuits. A clock skew for the inter-functional clock distribution network is determined. The clock skew is then compensated by inserting the delaying circuit at a terminal of the inter-function clock distribution network where each of the functional circuits is connected to the inter-functional clock distribution network.
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