混合自由形式摆放布局规划方法  

Hybrid Free Form Placer nent Method for Floorplan

作　　者：江富荣 孙希延[1,2,3,4] 肖有军 纪元法 白杨[1,2] 梁维彬 曹荀[1,2] Jiang Furong;Sun Xiyan;Xiao Youjun;Ji Yuanfa;Bai Yang;Liang Weibin;Cao Xun(Guangxi Key Laboratory of Precision Navigation Technology and Application,Guilin University of Electronic Technology,Guilin 541004,China;School of Information and Communicaiton,Guilin University of Electronic Technology,Guilin 541004,China;National&Local Joint Engineering Research Center of Satellite Navigation Positioning and Location Service,Guilin 541004,China;GUET-Nanning E-Tech Research Institute Co.,Ltd.,Nanning 530031,China;Global Unichip Corp(Nanjing),Nanjing 210018,China)

机构地区：[1]桂林电子科技大学广西精密导航技术与应用重点实验室,广西桂林541004 [2]桂林电子科技大学信息与通信学院,广西桂林541004 [3]卫星导航定位与位置服务国家地方联合工程研究中心,广西桂林541004 [4]南宁桂电电子科技研究院有限公司,南宁530031 [5]创意电子(南京)有限公司,南京210018

出　　处：《半导体技术》2023年第11期1030-1037,1044,共9页Semiconductor Technology

基　　金：国家自然科学基金资助项目(62061010,62161007);广西科技厅项目(桂科AA20302022,桂科AB21196041,桂科AB22035074,桂科AD22080061);广西八桂学者项目;桂林市科技项目(20210222-1);桂林电子科技大学研究生创新项目;“认知无线电与信息处理”教育部重点实验室2022年主任基金资助项目;广西精密导航与应用重点实验室开放基金资助项目(DH202215)。

摘　　要：随着现代大规模集成电路中宏单元数量的增加,传统布局规划效率低且难以达到良好的结果质量。为应对此问题,提出了自由形式摆放(FFP)技术。然而,FFP方法存在供电网设计困难和设计规则违例等问题。针对传统布局规划和FFP方法当前的局限性,提出了一种混合FFP布局规划方法,通过供电网设计约束、自动宏对齐、设计规则检查修复脚本以及通道调整等方法解决FFP方法存在的问题。经过项目应用测试,结果表明混合FFP方法保留了FFP在性能、功耗和面积方面的优势,并减少了设计规则违例,时序违例减少了约46%,绕线总长度缩短了约9%,总体功耗降低了约26%,同时适用于低功耗设计。With the increasing number of macro cells in modern large-scale integrated circuits,traditional floorplan is inefficient and difficult to achieve satisfactory quality of result.To address this issue,free form placement(FFP)technology was proposed.However,the FFP method has problems such as difficulties in power mesh design and design rule violations.To overcome the current limitations of traditional floorplan and FFP method,a hybrid FFP floorplan method was proposed to solve the problems of the FFP method through power mesh design constraints,automated macro alignment,design rule check and fix scripts,and channel adjustment.Through project application testing,the results show that the hybrid FFP method retains the advantages of FFP in terms of performance,power and area consumption.It decreases design rule violations,achieving a reduction in timing violations by about 46%,a reduction in total wirelength by about 9%,and a reduction in overall power consumption by about 26%,as well as being suitable for low-power designs.

关 键 词：布局规划 设计约束 自动化调整 混合自由形式摆放(FFP) 结果质量 

分 类 号：TN47[电子电信—微电子学与固体电子学]