| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a design method of a substrate wiring, capable of efficiently designing a wiring substrate free from cross talk without the need of noise analysis of the wiring substrate of which layout is designed. <P>SOLUTION: A design method of a substrate wiring includes: a first step S1 of calculating severity as an index for preventing crosstalk from a generation noise level and an allowable noise level about a wiring pair consisting of an aggressive side wiring and a victim side wiring of noise; a second step S2 of imparting a severity class (SC) classified and defined in advance in a severity value range to the wiring pair, on the basis of the calculated severity; a third step S3 of designating one or more design allowable values belonging to the SC imparted to the wiring pair for the design factor of the wiring pair and creating a designated allowable value list, on the basis of a preset design allowable value list for each SC; and a fourth step S4 of laying out the wiring pair on a substrate on the basis of the design allowable values. <P>COPYRIGHT: (C)2013,JPO&INPIT |
