Efficient Algorithms for Shortest Paths in Sparse Networks
Journal of the ACM (JACM)
Introduction to VLSI Systems
Fundamentals of Computer Alori
Fundamentals of Computer Alori
DAC '80 Proceedings of the 17th Design Automation Conference
DAC '76 Proceedings of the 13th Design Automation Conference
A solution to line-routing problems on the continuous plane
DAC '69 Proceedings of the 6th annual Design Automation Conference
Advanced LILAC - an Automated Layout Generation system for MOS/LSIs
DAC '74 Proceedings of the 11th Design Automation Workshop
IEEE Transactions on Parallel and Distributed Systems
The effect of register-transfer design tradeoffs on chip area and performance
DAC '83 Proceedings of the 20th Design Automation Conference
CAF: A computer-assisted floorplanning tool
DAC '83 Proceedings of the 20th Design Automation Conference
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This paper presents a novel and effective strategy for routing custom integrated circuits as well as solutions to subproblems associated with this strategy. Given an initial placement of rectangular blocks, the routing strategy includes the following major steps: construction of a channel graph, estimation of channel widths (based on a statistical model for signal nets and topological routing of power and ground nets), placement modification to include the estimated channel widths, topological routing for signal nets, and finally track assignment. Besides presenting an overview of our strategy, the following topics will be discussed in some detail: (1) necessary and sufficient conditions and a simple algorithm for single layer topological routing of power and ground nets, (2) a quadratic programming formulation for the placement modification problem, and (3) a fast algorithm for obtaining topological routes for signal nets.