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Timing-driven obstacles-avoiding routing tree construction for a multiple-layer system

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4 Author(s)
Hsin-Hsiung Huang ; Dept. of Electron. Eng., Chung Yuan Christian Univ., Chungli ; Hui-Yu Huang ; Yu-Cheng Lin ; Tsai-Ming Hsieh

In this paper, we formulate the timing-driven multiple-layer obstacle-avoiding rectilinear Steiner minimal tree (TML-OARSMT) problem and propose an algorithm to solve the problem. The objective is simultaneously to minimize the maximum source-to-terminal length and minimize the number of vias. The proposed algorithm contains the three steps, including the multiple-level timing-driven partitioning, the multiple-level routing tree construction with obstacles, and the timing-driven multiple-layer balanced tree construction. Compared with the traditional method, the partition-based method can significantly improve the maximum source-to-terminal length and the total wirelength by 11.3% and 10.9% respectively with the additional number of vias.

Published in:

Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on

Date of Conference:

18-21 May 2008

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