发明授权
- 专利标题: Performing a statistical timing abstraction for a hierarchical timing analysis of VLSI circuits
- 专利标题(中): 对VLSI电路的分层定时分析执行统计时序抽象
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申请号: US12388932申请日: 2009-02-19
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公开(公告)号: US08122404B2公开(公告)日: 2012-02-21
- 发明人: Debjit Sinha , Adil Bhanji , Barry L. Dorfman , Kerim Kalafala , Natesan Venkateswaran , Chandramouli Visweswariah
- 申请人: Debjit Sinha , Adil Bhanji , Barry L. Dorfman , Kerim Kalafala , Natesan Venkateswaran , Chandramouli Visweswariah
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理商 H. Daniel Schnurmann
- 主分类号: G06F17/50
- IPC分类号: G06F17/50
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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