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Unlike the mature and highly automatic flow for digital layout generation, the existing method to generate an analog layout is far from automatic because it highly depends on the designer's expertise. Prior endeavors are mainly dedicated to analog placement because they consider only the device symmetry constraint. This paper raises the wiring symmetry issue to analog layout: wiring symmetry is as...
The spatial information extraction of layout space is an essential issue to be solved firstly for automating design of electrical wiring harnesses and pipes in complex product. According to the shape of layout space and the design requirements of layout routing, two mesh division methods and how to describe layout space are analyzed. Then, in consideration of existing hardware facility and layout...
In this paper we show that any channel routing problem of density d involving two-terminal nets can always be solved in the knock-knee mode in a channel of width equal the density d with three conducting layers. An algorithm is described which produces a layout of n nets with the following properties: (i) it has minimal width d; (ii) it can be realized with three layers; (iii) it has at most 3n vias;...
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