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Directional and single-driver wires in FPGA interconnect   
摘  要:   Modern FPGA architectures from Altera and Xilinx have shifted away from allowing multiple drivers to connect to each interconnect wire. This work advocates the need for this shift to single-driver wiring by investigating the necessary architectural and circuit design changes. When single-driver wiring is used, area improves by 25%, delay improves by 9%, and area-delay improves by 32% compared to bidirectional wiring. Wiring capacitance is reduced by 37% due to reduced switch loading and physical wire length shrinkage. Furthermore, it is shown that larger circuits tend to realize larger savings. No significant CAD tool changes are needed.
发  表:   IEEE International Conference on Field-Programmable Technology  2004

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