Clock routing for high-performance ICs
DAC '90 Proceedings of the 27th ACM/IEEE Design Automation Conference
High-performance clock routing based on recursive geometric matching
DAC '91 Proceedings of the 28th ACM/IEEE Design Automation Conference
Perfect-balance planar clock routing with minimal path-length
ICCAD '92 Proceedings of the 1992 IEEE/ACM international conference on Computer-aided design
Optimization of power dissipation and skew sensitivity in clock buffer synthesis
ISLPED '95 Proceedings of the 1995 international symposium on Low power design
Journal of VLSI Signal Processing Systems - Special issue on high performance clock distribution networks
Bounded-skew clock and Steiner routing
ACM Transactions on Design Automation of Electronic Systems (TODAES)
Hybrid structured clock network construction
Proceedings of the 2001 IEEE/ACM international conference on Computer-aided design
Process variation aware clock tree routing
Proceedings of the 2003 international symposium on Physical design
Reducing clock skew variability via cross links
Proceedings of the 41st annual Design Automation Conference
Improved algorithms for link-based non-tree clock networks for skew variability reduction
Proceedings of the 2005 international symposium on Physical design
Proceedings of the 2005 Asia and South Pacific Design Automation Conference
Statistical based link insertion for robust clock network design
ICCAD '05 Proceedings of the 2005 IEEE/ACM International conference on Computer-aided design
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In this paper, we propose a novel hierarchical multiple-merge zero skew clock routing algorithm. The routing results produced by our approach will have zero skew in the nominal case and minimal skew increase in the presence of worst process variations. In order to construct such a clock routing, we formulate the linear placement with maximum spread problem and provide an O(nmin{n,P}lognlogP) algorithm for optimally solving this problem, where n is the number of cells to be placed and P is the maximum spread. Experimental results show that our algorithm can indeed reduce the skew in various manufacturing variations effectively.