摘要: 在先进工艺节点下,芯片电源网络的电阻增加和高密度的晶体管同时翻转会在VDD和VSS上产生电压降(IR Drop),导致芯片产生时序问题和功能性障碍。采用基于Innovus工具的三种自动化IR Drop修复流程在PR (Placement and Route)阶段优化模块的动态IR Drop。结果表明,Pegasus PG Fix Flow和IR-Aware Placement这两种方法...
文档介绍:在先进工艺节点下,芯片电源网络的电阻增加和高密度的晶体管同时翻转会在VDD和VSS上产生电压降(IR Drop),导致芯片产生时序问题和功能性障碍。采用基于Innovus工具的三种自动化IR Drop修复流程在PR (Placement and Route)阶段优化模块的动态IR Drop。结果表明,Pegasus PG Fix Flow和IR-Aware Placement这两种...
采用基于Innovus工具的三种自动化IR Drop修复流程在PR (Placement and Route)阶段优化模块的动态IR Drop o结果表明,Pegasus PG Fix Flow和IR-Aware Placement这两种方法能分别修复设计的48%和33.8%的IR Drop违例，且不会恶化时序和DRC(Design Rule Check),而IR-Aware PG Strape Addition这种方法的优化力度相对较小...
本文主要介绍基于Cadence新一代布局布线工具Innovus平台,为了实现高标准的PPA (Power Performance Area),引入新的方法学—混合摆放 (Mix-Place),并提出了一套快速布局规划 (Floorplan) ,兼顾时序的压降优化 (Timing Aware IR Drop Eco) 和光刻坏点修复 (Fix Litho Hotspot) 相结合的一体化完整解决方案。采用先进的Fi...
Innovus工具IR Drop修复在先进工艺节点下,芯片电源网络的电阻增加和高密度的晶体管同时翻转会在VDD和VSS上产生电压降(IR Drop),导致芯片产生时序问题和功能性障碍.采用基于Innovus工具的三种自动化IR Drop修复流程在PR(Placement and Route)阶段优化模块的动态IR Drop.结果表明, Pegasus PG Fix Flow和IR-Aware ...
IR drop is the difference between two endpoints of the conducting wire during a current flow, where the resistance of the conductor will decide the drop percentage. IR drop is also known as the Voltage drop. So, this Voltage drop in the metal wires weaken...
Flow 上最大的改动是,不需要创建或读入Floorplan 在Place 的时候使能 mixed placer 即可。至于约束的加入、每一步做了什么、该flow 的限制,后续将逐渐搬运。 STMicroelectonic 在 SJ CdnLive 发表的文章名称是:Mixed Placer: an unconventional paradigm for hard macro intensive designs. 文章分四部分: ...
IR Drop Aware Placement: The IR drop-aware placement method spreads high power density hotspots, and applies padding to high current density instances IR-Aware Clock Tree Synthesis: SkewClock IR Fixing method reduces peak current due to simultaneous register clocking ...
have their own power sign off, and their own IR-drop sign off. Unlike a Tempus/STA signoff, a power signoff requires much more development. Cadence tools in general originally came from a bunch of acquisitions, so there used to be an issue of diff databases, creating data exchange ...
in 2016 Aart instead "promoted" Antun and Michael out of PnR R&D, while also gutting 200 of his senior PnR R&D staff... "I don't know what the exact numbers are, butSynopsys laid off200 people between 55-60 years old. So, they cleaned house of everybody in the prior generation."...