Freescale Semiconductor,inc.

Ilan Algor

Rajendran Panda

Murat R Becer

David Theodore Blaauw

Vladimir P Zolotov

Chanhee Oh

Amir Grinshpon

Rafi Levy

Processes and systems () for reducing pessimism in cross talk noise aware static timing analysis and thus resulting false path failures use either or both of effective delta delay noise () and path based delay noise () analysis. Effective delta delay determines an impact () on victim timing of an action by aggressors that occur during a region () where victim and aggressor timing windows overlap and determines an effective delta delaycorresponding to any portionof the impact on victim timing that extends beyond the victim timing window. The effective delta delay is used to adjust the victim timing window. Path based delta delay determines an uncertainty () in a switching time corresponding to a particular path for a victim resulting from an action (switching) by aggressors that occurs at the switching time, i.e. during a switching time window (ato a+u) () when uncertainty is included.

Pessimism reduction in crosstalk noise aware static timing analysis

A method for designing and routing circuitry having reduced cross talk. Early noise analysis () is performed after global routing () but before detailed routing () in order to repair problems () before detailed routing () is performed. In one embodiment, the early noise analysis () is preceded by probabilistic extraction (). In one embodiment, probabilistic extraction () includes determining a probability of occurrence for each configuration in a predetermined set of configurations (). Probabilistic capacitance extraction is then performed (). A probabilistic distributed coupled RC network is constructed using the extracted capacitances (). In one embodiment, probabilistic extraction () includes estimating aggressor strength () using the probabilistic distributed coupled RC network.

Noise analysis for an integrated circuit model

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Ganei Tikva, Israel

Ilan Algor