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Efficient Routability Checking for Global Wires in Planar Layouts
Naoyuki ISO Yasushi KAWAGUCHI Tomio HIRATA
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/10/25
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
layout design, routability, routing,
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In VLSI and printed wiring board design, routing process usually consists of two stages: the global routing and the detailed routing. The routability checking is to decide whether the global wires can be transformed into the detailed ones or not. In this paper, we propose two graphs, the capacity checking graph and the initial flow graph, for efficient routability checking in planar layouts.