As IC designers migrate to 90-nm processes and look ahead to 65 nm, it's more critical than ever to supply implementation flows with accurate physical models. Timing, noise, and power effects at these geometries are heavily interdependent and can no longer be analyzed in isolation. To this end, Synopsys now offers a unified current-source modeling technology that enables comprehensive analysis of these effects.
The Composite Current Source (CCS) modeling technology was initially launched in October 2004 for timing models. Since then, it has been extended to encompass noise and power. With CCS technology, designers can model such deep-submicron effects as high-impedance interconnects, Miller effects, dynamic IR drop, and driver weakening.
To speed adoption of CCS, which is an open library model, Synopsys offers a complete support system for library creation and validation. Support includes an open-source Liberty modeling format, parsers, characterization/validation tools, and guidelines to aid in library creation.
In addition, Synopsys' Galaxy design platform supports the CCS modeling technology. Galaxy users can use CCS models to help eliminate extra design margins and to close designs more quickly.