Segmented channel routing

  • Authors:
  • Jonathan Greene;Vwani Roychowdhury;Sinan Kaptanoglu;Abbas El Gamal

  • Affiliations:
  • Actel Corporation, Sunnyvale, CA;Information Systems Lab., Stanford University, Stanford, CA;Actel Corporation, Sunnyvale, CA;Information Systems Lab., Stanford University, Stanford, CA

  • Venue:
  • DAC '90 Proceedings of the 27th ACM/IEEE Design Automation Conference
  • Year:
  • 1991

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Abstract

Routing channels in a field-programmable gate array contain predefined wiring segments of various lengths. These may be connected to the pins of the gates or joined end-to-end to form longer segments by programmable switches. The segmented channel routing problem is formulated, and polynomial time algorithms are given for certain special cases. The general problem is NP-complete, but it can be adequately solved in practice. Experiments indicate that a segmented channel with judiciously chosen segment lengths may near the efficiency of a conventional channel.