发明授权
US08122404B2 Performing a statistical timing abstraction for a hierarchical timing analysis of VLSI circuits 有权
对VLSI电路的分层定时分析执行统计时序抽象

Performing a statistical timing abstraction for a hierarchical timing analysis of VLSI circuits
摘要:
A method for performing a hierarchical statistical timing analysis of an integrated circuit (IC) chip design by abstracting one or more macros of the design. The method includes performing a statistical static timing analysis of at least one macro; performing a statistical abstraction of the macro to obtain a statistical abstract model of the macro timing characteristics; applying the statistical abstract model as the timing model for each occurrence of the macro leading to a simplified IC chip design; and performing a hierarchical statistical timing analysis of the simplified chip design. The method achieves a context aware statistical abstraction, where a generated statistical abstract model is instantiated for each macro of the chip during statistical static timing analysis at the chip level, providing a compressed and pruned statistical timing abstraction and reducing the model-size during the statistical abstraction.
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