Titlebook: Closing the Gap Between ASIC & Custom; Tools and Techniques David Chinnery,Kurt Keutzer Book 2002 Springer Science+Business Media New York

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nal account of the creation of this book. The challenge from Earl Killian, formerly an architect of the MIPS processors and at that time Chief Architect at Tensilica, was to explain the significant performance gap between ASICs and custom circuits designed in the same process generation. The relevan

想象

,Ausgeführte Schiffs-Ölmasehinenanlagen,h-based ASIC designs. Hopefully, by showing that latches provide performance improvement over traditional flip-flop ASICs with minimal area penalty, future tools and standard cell libraries will provide more support for latch-based designs.

武器

Die Entstehung eines Kompetenzzentrums,U core, without the caches, has an area of approximately . in a 6-metal 0.18um CMOS process. The design operates up to 520MHz at 1.8V, among the highest reported speeds for a synthesized CPU core [2].

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Physical Prototyping Plans for High Performanceund where any design trade-off and constraints can be constantly monitored and verified. Moreover, this prototype can be refined using a detail implementation tool without losing consistency of design quality. Therefore, design closure can be achieved with high efficiency and predictability..Physica

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Automatic Replacement of Flip-Flops by Latches in ASICsogy for retiming latches by retiming flip-flops. We have demonstrated a successful approach to replacing flip-flops on critical paths by latches to speed up ASICs, providing actual speed improvements of 5% to 20% on real commercial designs..In this chapter we outlined some of the limitations on latc

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Faster and Lower Power Cell-Based Designs with Transistor-Level Cell Sizingity of drive strengths and lack of skewed drive strength in libraries. Including these variants would lead to a huge library set, which would very quickly become unmanageable. Moreover, gate-level timing data are more conservative than transistor level timing due to guard banding during cell charact

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