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同时非均匀分段和非统一缓冲器插入算法

马鸿 何庆延 彭思龙

高技术通讯2009,Vol.19Issue(7):735-740,6.
高技术通讯2009,Vol.19Issue(7):735-740,6.DOI:10.3772/j.issn.1002-0470.2009.07.013

同时非均匀分段和非统一缓冲器插入算法

Simultaneous non-uniform wire segmenting and buffer insertion

马鸿 1何庆延 2彭思龙1

作者信息

  • 1. 中国科学院自动化研究所国家专用集成电路设计工程研究中心,北京,100080
  • 2. Takumi科技公司,圣克拉拉,加利福尼亚,94085
  • 折叠

摘要

Abstract

The paper proposes a non-uniform wire segmenting and buffer insertion algorithm, which can effectively solve the problem of driving long wires with heavy load. The algorithm considers the resistance effect and the capacitance effect of the interconnects, adopts a geometrically progressive buffer chain to drive the large load, and computes the delay using the adjustable wire segments at the same time. It can yield the accurate prediction of the delay of buffer insertaion while considering the impact of blockages on the layout. The experimental results show that this algorithm can optimally solve the large-load-driving problem and can be efficiently adopted in the floorplan and placement stage which can guarantee timing closure and design convergence while saving the routing resources.

关键词

非均匀分段/缓冲器链/电容效应/梯度算法/Elmore延时

Key words

non-uniform wire segmenting/buffer chain/capacitance effect/gradient method/Elmore delay

分类

信息技术与安全科学

引用本文复制引用

马鸿,何庆延,彭思龙..同时非均匀分段和非统一缓冲器插入算法[J].高技术通讯,2009,19(7):735-740,6.

基金项目

家科技支撑计划(2006BAK07B04)资助项目. (2006BAK07B04)

高技术通讯

OA北大核心CSCDCSTPCD

1002-0470

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