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Minimizing interconnection delays in array-based FPGAs

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3 Author(s)
M. Khellah ; Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada ; S. Brown ; Z. Vranesic

This paper provides research results that suggest ways in which the speed-performance of array-based FPGAs, like those from Xilinx, can be improved through enhancing their interconnect. Using an experimental approach, we study this issue from both the perspective of improving the routing architectures of the chips, as well as the CAD tools used to route circuits. The basic conclusions reached are: the lengths of wire segments in the interconnect dramatically affects speed-performance, it is crucial to limit the number of programmable switches that signals pass through in series, the impact of decisions made by the CAD routing tools is very significant, and the CAD tools should consider both speed-performance and area utilization, not just focus on one goal

Published in:

Custom Integrated Circuits Conference, 1994., Proceedings of the IEEE 1994

Date of Conference:

1-4 May 1994