XTop在多模式多端角时序签核中的应用  

Application of XTop in Multi-Mode Multi-Corner Timing Signoff

作　　者：王淑芬[1] 秦贵阳 李应利 WANG Shu-fen;QIN Gui-yang;LI Ying-li(China Electronics Technology Group Corporation No.58 Research Institute)

机构地区：[1]中国电子科技集团公司第五十八研究所

出　　处：《中国集成电路》2024年第10期48-51,86,共5页China lntegrated Circuit

摘　　要：在超大规模集成电路后端设计过程中,静态时序分析已成为时序签核时最普遍使用的时序分析方法。多模式多端角的时序分析使得静态时序分析更加复杂化,时序在签核中更难以收敛。基于UMC28nm工艺的超大规模集成电路后端设计,为了自动化精准解决芯片在时序签核时存在的时序违例问题,使用XTop工具跨平台对时序违例进行优化,代替需要手动写脚本将违例路径返回到PR阶段修复的传统方法。结果表明,XTop工具在保持不影响建立时间的情况下,可自动化精准修复大量的保持时间违例。In the backend design process of very-large-scale integrated circuits,static timing analysis has become the most commonly used timing analysis method for timing signoff.Multi-mode multi-corner timing analysis makes static timing analysis more complex,and timing convergence is more difficult in signoff.In the backend design of very-large-scale integrated circuits based on UMC28nm process,in order to automatically and accurately solve timing violation problems of the chips during timing signoff,the XTop is used to optimize the timing violation across platforms,replacing the traditional method of manually writing scripts to return the violated paths for repair in the PR stage.The result show that XTop can automatically and accurately repair a large number of hold time violations without affecting the setup time.

关 键 词：静态时序分析 多模式多端角 超大规模集成电路 XTop 时序优化 

分 类 号：TN47[电子电信—微电子学与固体电子学]