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VLSID
2007
IEEE

An ECO Technique for Removing Crosstalk Violations in Clock Networks

14 years 4 months ago
An ECO Technique for Removing Crosstalk Violations in Clock Networks
Crosstalk noise in the clock network of digital circuits is often detected late in the design cycle, sometimes as late as after first silicon. It is therefore necessary to fix crosstalk violations in the clock tree by making minimal design changes and maintaining skew bounds. We propose a novel approach for making Engineering Change Order (ECO) changes in the clock network to remove crosstalk violations. A two-pronged approach based on wire-translocation and rerouting is presented. Wire translocation, i.e., changing the track for a net to another free track with less crosstalk, eliminates a large percentage of removable violations. A linear time procedure to check if a violation is removable by translocation is developed. Next, an efficient rerouting method based on an incremental loci-finding algorithm is combined with linear time dynamic programming approach to eliminate the remaining crosstalk violations. Simulation results for randomly-generated clock tree of different sizes and be...
Amit Kumar, Krishnendu Chakrabarty, Chunduri Rama
Added 30 Nov 2009
Updated 30 Nov 2009
Type Conference
Year 2007
Where VLSID
Authors Amit Kumar, Krishnendu Chakrabarty, Chunduri Rama Mohan
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