Corner-Stitching-Based Multilayer Obstacle-Avoiding Component-to-Component Rectilinear Minimum Spanning Tree Construction

Yen Yu Su, Shuo Hui Wang, Wei Liang Wu, Mark Po Hung Lin*


研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)


Engineering change orders (ECOs) are pervasively applied to modern physical design of nanometer integrated circuits for cost-effective design changes. After applying ECO, a net may become open, which results in a large number of disconnected net components. Each net component further consists of a set of connected net shapes and vias on different layers. It is very challenging to efficiently and effectively identify all disconnected net components and find an obstacle-avoiding minimal-cost routing path among those net components. This paper introduces an open-net finder and an open-net connector based on the corner-stitching data structure for open-net routing, and proposes a new method of constructing a multilayer obstacle-avoiding component-to-component rectilinear minimum spanning tree. The preliminary idea and implementation of the proposed method had received the first place award in ICCAD-2017 CAD contest. This paper further details the complete idea of the proposed method. Experimental results show that the proposed open-net finder and connector outperform the top three open-net routers in the ICCAD-2017 CAD contest and two latest published works, with better routing costs and much shorter runtime.

頁(從 - 到)675-685
期刊IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
出版狀態Published - 3月 2020


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