XIE Ding, LAI Jinmei, TONG Jiarong. Research of E±cient Utilization RoutingAlgorithm for Current FPGA[J]. Chinese Journal of Electronics, 2010, 19(1): 48-52.
Citation:
XIE Ding, LAI Jinmei, TONG Jiarong. Research of E±cient Utilization RoutingAlgorithm for Current FPGA[J]. Chinese Journal of Electronics, 2010, 19(1): 48-52.
XIE Ding, LAI Jinmei, TONG Jiarong. Research of E±cient Utilization RoutingAlgorithm for Current FPGA[J]. Chinese Journal of Electronics, 2010, 19(1): 48-52.
Citation:
XIE Ding, LAI Jinmei, TONG Jiarong. Research of E±cient Utilization RoutingAlgorithm for Current FPGA[J]. Chinese Journal of Electronics, 2010, 19(1): 48-52.
Current FPGAs contain routing resources of di®erent lengths and connectivity, and the connection re- lation of which are described by hierarchical General rout- ing matrix (GRM). In this paper, we present a practical routing algorithm which can represent the complex driv- ing relationships contained in GRMs and utilize routing resources more e±cient for GRM based FPGAs. First, we build Routing resource graph (RRG) by a bottom-up way, then employ A* directed search algorithm while dynam- ically updating the base cost of routing resource nodes, so that the utilization rate of routing resources can be en- hanced, and this routing algorithm has high-adaptability to latest FPGA architectures. The experiment result shows that the utilization rate of hex lines and long lines has been raised by 6% and 8% respectively.
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