Title :
Clock tree synthesis with data-path sensitivity matching
Author :
Guthaus, Matthew R. ; Sylvester, Dennis ; Brown, Richard B.
Author_Institution :
UC Santa Cruz, Santa Cruz
Abstract :
This paper investigates methods for minimizing the impact of process variation on clock skew using buffer and wire sizing. While most papers on clock trees ignore data-path circuit variations and most papers on data-path circuit optimization disregard clock tree variation, we consider both. Using both clock and data-path variations together, we present a novel sensitivity-matching algorithm that allows clock tree skews to be intentionally correlated with data-path sensitivities to ameliorate timing violations due to variation. Our statistical tuning shows an improvement in terms of expected clock skew and clock skew variation over previously published robust algorithms.
Keywords :
buffer circuits; circuit optimisation; clocks; trees (mathematics); circuit optimization; clock tree synthesis; data-path sensitivity matching; statistical tuning; Circuit optimization; Cities and towns; Clocks; Delay effects; Energy consumption; Integrated circuit interconnections; Random variables; Robustness; Timing; Wire;
Conference_Titel :
Design Automation Conference, 2008. ASPDAC 2008. Asia and South Pacific
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-1921-0
Electronic_ISBN :
978-1-4244-1922-7
DOI :
10.1109/ASPDAC.2008.4484001