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DAC
2004
ACM

Reducing clock skew variability via cross links

10 years 6 days ago
Reducing clock skew variability via cross links
Increasingly significant variational effects present a great challenge for delivering desired clock skew reliably. Non-tree clock network has been recognized as a promising approach to overcome the variation problem. Existing non-tree clock routing methods are restricted to a few simple or regular structures, and often consume excessive amount of wirelength. In this paper, we suggest to construct a low cost non-tree clock network by inserting cross links in a given clock tree. The effects of the link insertion on clock skew variability are analyzed. Based on the analysis, we propose two link insertion schemes that can quickly convert a clock tree to a non-tree with significantly lower skew variability and very limited wirelength increase. In these schemes, the complicated non-tree delay computation is circumvented. Further, they can be applied to the recently popular non-zero skew routing easily. The effectiveness of the proposed techniques has been validated through SPICE based Monte ...
Anand Rajaram, Jiang Hu, Rabi N. Mahapatra
Added 13 Nov 2009
Updated 13 Nov 2009
Type Conference
Year 2004
Where DAC
Authors Anand Rajaram, Jiang Hu, Rabi N. Mahapatra
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