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    • 5. 发明专利
    • Integrated circuit and method for layout thereof
    • 集成电路及其布局方法
    • JP2005026537A
    • 2005-01-27
    • JP2003191693
    • 2003-07-04
    • Cadence Design Systems Incケイデンス デザイン システムズ インコーポレイテッド
    • TATEISHI KAZUYUKI
    • G06F17/50H01L21/82H03K19/195
    • PROBLEM TO BE SOLVED: To provide a layout method by which area efficiency is improved by simplifying wiring of a data transmission route, a clock transmission route, etc. for facilitating layout work while securing fast operation in an integrated circuit using an SFQ circuit in particular.
      SOLUTION: P is set to the position of the junction of a clock, α to the position of the logic cell of a poststage (second logic cell), and β to the position of the logic cell of a prestage (first logic cell). A condition (1) is that a virtual rectangle (including a square) where P and α are positioned at vertexes opposing each other across a diagonal line is supposed, and β is arranged inside of the rectangle. A condition (2) is that a route from P to α, a route from P to β and a route from β to α are selected to be respectively a Manhattan distance. Then the positions and routes of P, α and β are decided so as to satisfy the conditions (1) and (2). By layout like this, wiring is simplified while keeping fast operation, and the area efficiency is improved.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种通过简化数据传输路由的布线,时钟传输路由等来提高面积效率的布局方法,以便于在使用SFQ的集成电路中确保快速操作的同时进行布局工作 电路特别。 解决方案:将P设置为时钟的结点α与后级(第二逻辑单元)的逻辑单元的位置,并将β设置为前级逻辑单元的位置(第一逻辑 细胞)。 假设条件(1)是其中P和α位于对角线上彼此相对的顶点处的虚拟矩形(包括正方形),并且β被布置在矩形内部。 条件(2)是从P到α的路由,从P到β的路由和从β到α的路由被选择为分别是曼哈顿距离。 然后确定P,α和β的位置和路线以满足条件(1)和(2)。 通过这样的布局,简化了接线,同时保持快速运行,提高了面积效率。 版权所有(C)2005,JPO&NCIPI