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基于布通率的FPGA装箱算法
引用本文:胡云,王伶俐,唐璞山,童家榕.基于布通率的FPGA装箱算法[J].计算机辅助设计与图形学学报,2007,19(1):108-113.
作者姓名:胡云  王伶俐  唐璞山  童家榕
作者单位:复旦大学专用集成电路与系统国家重点实验室,上海,201203
基金项目:上海应用材料科技合作共同计划项目 , 复旦大学校科研和教改项目
摘    要:提出一种基于FPGA布通率的装箱算法.选择连接因子最小的节点作为种子节点;采用基于布通率的启发式函数来选择最合适的逻辑单元(LE)装箱到可配置逻辑单元(CLB)内部.可以同时减少装箱后CLB之间的线网数和CLB引脚的外部使用率,从而减少布线所需的通道数.该算法和已有算法相比较,线网数和布线通道数都减少约30%. 算法的时间复杂度仍然是线性的.

关 键 词:现场可编程逻辑门阵列  布通率  装箱  布通率  FPGA  装箱算法  Algorithm  Packing  线性  复杂度  时间  比较  通道数  布线  使用  引脚  线网  配置逻辑单元  启发式函数  种子  节点  最小  连接因子
收稿时间:2006-02-24
修稿时间:2006-02-242006-09-13

A Routability Driven Packing Algorithm for FPGA
Hu Yun,Wang Lingli,Tang Pushang,Tong Jiarong.A Routability Driven Packing Algorithm for FPGA[J].Journal of Computer-Aided Design & Computer Graphics,2007,19(1):108-113.
Authors:Hu Yun  Wang Lingli  Tang Pushang  Tong Jiarong
Abstract:In this paper,a packing algorithm based on routability is proposed.This method begins with selecting logic element(LE) with minimum connectivity factor as the seed of the packing,and then uses a heuristic function based on routability-driven to obtain the most appropriate LE to pack into the configurable logic block(CLB).The number of the used pins of the CLB and the inter-CLB wires can be reduced simultaneously.Both number of nets and routing tracks have been improved about 30% when compared with previous algorithms.The time complexity of this algorithm is still linear.
Keywords:FPGA  routability driven  packing
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