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A high quality, low cost router for MOS/LSI

Published: 26 June 1972 Publication History

Abstract

This paper presents the implementation of an automatic router for the custom design of MOS integrated circuits. Standard cells are utilized for the logical functions and are interconnected by the router according to the specific design being produced. The design program operates at a very low cost and yields results comparable to manual routing. An expansion technique is used which will give 100 percent completion of interconnection. The router will handle any cell size and will route according to any predetermined design rules. An accuracy of one-hundredth of a mil can be maintained on chips over 300 mils on a side. The router may be used to build designs automatically or, because of its very low cost, can allow manual intervention to achieve more efficient layouts.

References

[1]
D. W. Hightower, "A Solution to Line-Routing Problems on the Continuous Plane," Proceedings of the Design Automation Workshop, pp. 1-24, 1969.
[2]
C.Y. Lee, "An Algorithm for Path Connections and Its Applications," IRE Transactions on Electronic Computers, pp. 346-365, September 1961.
[3]
E.G. Ulrich, T. Baker, L.R. Williams, "Fault-Test Analysis Techniques Based on Logic Simulation," Proceedings of the Design Automation Workshop, 1972.
[4]
D. Schuler, E. G. Ulrich. "Clustering and Linear Placement," Proceedings of the Design Automation Workshop, 1972.
[5]
C. Berge, A. Ghouila-Houri, Programming Games and Transportation Networks (New York: John Wiley, 1962) p. 179.
[6]
A. Hashimoto, J.E. Stevens, "Wire Routing by Optimizing Channel Assignment Within Large Apertures," Proceedings of the Design Automation Workshop, pp. 155-169, 1971.

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cover image ACM Conferences
DAC '72: Proceedings of the 9th Design Automation Workshop
June 1972
406 pages
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Association for Computing Machinery

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Published: 26 June 1972

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  • (2006)How UML is usedCommunications of the ACM10.1145/1125944.112594949:5(109-113)Online publication date: 1-May-2006
  • (2006)Automatic Variable-Width Routing for VLSIIEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems10.1109/TCAD.1983.12700452:4(271-284)Online publication date: 1-Nov-2006
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