Timing-safe false path removal for combinational modules

A delay abstraction of a combinational module is a compact representation of the delay information of the module, which carries effective pin-to-pin delay for each primary-input/primary-output nstructing an accurate delay abstraction of a combinational module is crucial in capturing its delay characteristics precisely. the delay abstraction maintains enough accuracy or not has a direct impact on the accuracy of timing analysis using the delay abstraction. An important requirement is that the delay abstraction needs to be valid under any surrounding environment since we do not know a priori how this module is to be used. In the past, delay characterizationof combinationalmodules has been done mainly by performing topological analysis, i.e. given a combinational module, the delay between each input/output pair of the module is characterized by the longest topological path between the two terminals. Although this analysis is computationally effihe resulting delay abstraction can be too co...

• Type: Conference
• Year: 1999
• Where: ICCAD
• Authors: Yuji Kukimoto, Robert K. Brayton
• Keywords: Accurate Delay Abstraction, Combinational Module, Delay Abstraction, Hardware, ICCAD 1999