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JPH05190813A Expired / Lapsed JP ⏱️ 0.0 years remaining

Method of designing arrangement of integrated circuit

Assignee: Hitachi Ltd
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Filing: 1992-01-08
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Granted: —
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Expires: 2012-01-08
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Abstract

Abstract Translated from Japanese (57)【要約】 【目的】複数のセル列上を通過しなければならない長い 配線についても、配線の折れ曲がり数の増大、配線の迂 回を排除する。 【構成】LSIチップ(10)の格子状電源線(11) で囲まれた各区画毎に、機能セルの占有率等に応じて、 区画内において複数のセル列(12)を垂直に貫く配置 禁止領域(6)の個数、幅、位置を設定する。そして、 機能セル配置禁止領域(6)を除いたセル列(12)内 に機能セルの自動配置を行い、機能セル配置禁止領域 (6)を配線可能領域として自動配線を行う。 【効果】複数のセル列間にまたがる長い配線であって も、配線の折れ曲がり数を削減でき、配線の迂回、配線 の局部集中を緩和できる。 (57) [Abstract] [Purpose] Even for long wirings that must pass over a plurality of cell columns, increase in the number of wire bends and elimination of wiring detours. [Constitution] Lattice power supply line (11) of LSI chip (10) For each partition surrounded by The number, width, and position of placement prohibited areas (6) that vertically penetrate a plurality of cell rows (12) in a section are set. And The functional cells are automatically arranged in the cell row (12) excluding the functional cell layout prohibited area (6), and the automatic wiring is carried out using the functional cell layout prohibited area (6) as the wirable area. [Effect] Even with a long wiring extending over a plurality of cell columns, it is possible to reduce the number of wire bends, reduce wiring detours, and reduce local concentration of wiring.

Inventors

  • 👤 Shinichi Ariyoshi
  • 👤 信一 有吉
  • 👤 Toru Hiyama
  • 👤 徹 檜山
  • 👤 Koki Tokuyama
  • 👤 弘毅 徳山

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-09 20:55
CPC Classifications
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