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Title: Switchbox routing using score function
Authors: Tan, K.-P. 
Tan, T.-S. 
Keywords: CAD
integrated circuit
Switchbox routing
Issue Date: Oct-1989
Citation: Tan, K.-P.,Tan, T.-S. (1989-10). Switchbox routing using score function. Integration, the VLSI Journal 8 (1) : 17-39. ScholarBank@NUS Repository.
Abstract: A new heuristic algorithm, namely Score Function Switchbox Router, is proposed for the switchbox routing problem. It considers routing from the boundary of the switchbox inward using techniques such as figure of merit (or score function), unique route detection, and minimal rectilinear Steiner tree to achieve the three objectives of entire routability, minimizing wire length and number of vias. The algorithm is implemented on an Apollo DN580 graphics workstation and tested with examples taken from previous literatures. Experiment shows that it completes the routing for all routable cases, including the benchmark example of Burstein's difficult switchbox, in the order of a few seconds. Most encouraging of all, it is the only algorithm, using the traditional wiring model of having vertical and horizontal wires on two separate layers, that produces a solution fully automatic for the Burstein's difficult switchbox without even using the last column. © 1989.
Source Title: Integration, the VLSI Journal
ISSN: 01679260
Appears in Collections:Staff Publications

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