A New Routing Method Considering Neighboring-Wire Capacitance Constraints

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概要

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• This paper presents a new routing method that takes into account neighboring-wire-capacitance (inter-layer and intra-layer) constraints. Intermediate routing (IR) assigns each H/V wire segment to the detailed routing (DR) grid using global routing (GR) results, considering the neighboring-wire constraints (NWC) for critical nets. In DR, the results of IR for constrained nets and their neighboring wires are preserved, and violations that occur in IR are corrected. A simple method for setting NWC that satisfy the initial wire capacitance given in a set-wire-load (SWL) files is also presented. The routing method enables more accurate delay evaluation by considering inter-wire capacitance before DR, and avoids long and costly turnaround in deep-submicron layout design. Experimental results using MCNC benchmark test data shows that the errors between the maximum delay from IR and that from DR for each net were less than 5% for long (long delay) nets.

• 社団法人電子情報通信学会の論文
• 1998-12-25

著者

• YAMAKOSHI Kimihiro

  NTT System Electronics Laboratories

• Kitazawa Hitoshi

  Ntt Integrated Information And Energy Systems Laboratories

• WATANABE Takumi

  NTT Multimedia System Laboratory Group

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• A 40-Gb/s 8×8 ATM Switch LSI Using 0.25-μm CMOS/SIMOX(Special Issue on Multimedia, Network, and DRAM LSIs)
• A New Routing Method Considering Neighboring-Wire Capacitance Constraints

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