Cadence Design Systems, Inc.

Jayant Sharma

Naresh Kumar

Umesh Gupta

Ritika Govila

Rakesh Agarwal

Prashant Sethia

Sukriti Khanna

The present embodiments relate to static timing analysis (STA) of circuits. The STA can include determining graph based analysis (GBA) delays of timing paths within the circuit. Path based analysis (PBA) delays of a subset of timing paths can be determined to generate circuit stage credit values for circuit stages in the circuit. The circuit stage credit values can be used to adjust GBA delays of the timing paths. Prediction functions can be utilized to predict or estimate PBA delays of timing paths thereby avoiding the determination of actual PBA delays of the timing paths.

Circuit stage credit based approaches to static timing analysis of integrated circuits

A static timing analysis system for finding timing violations in a digital circuit design prior to circuit fabrication, and associated methods, use infinite-depth path-based analysis (IPBA) to achieve reduced pessimism as opposed to systems or methods employing only graph-based analysis (GBA), but with greatly reduced compute time requirements, or greater logic path coverage, versus systems or methods employing conventional or exhaustive path-based analysis. IPBA achieves the improved coverage or compute time results by slotting nodes of a circuit design graph into stages, propagating phases stage-by-stage for all paths in parallel, and merging phases wherever possible during the analysis.

Infinite-depth path-based analysis of operational timing for circuit design

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New Delhi, India

Jayant Sharma