H - Electricity – 01 – L
Patent
H - Electricity
01
L
356/117
H01L 21/70 (2006.01) G06F 17/50 (2006.01) H01L 27/02 (2006.01)
Patent
CA 1166759
YO979-023 A HIGH SPEED MACHINE FOR THE PHYSICAL DESIGN OF VERY LARGE SCALE INTEGRATED CIRUCITS Abstract Method and apparatus for the physical design of very large scale integrated (VLSI) circuits, and in particular the interconnection and wire routing between circuits formed on a chip. Apparatus is set forth for determining the wire routings in a VLSI circuit comprised of cells, wherein the cells are composed of electronic devices functioning as logic gates. Groups of cells may be interconnected to function as flip flops, shift registers and the like. A super- visory controller communicates with n, where n is an integer, identical multi-port processors, with one processor dedicated to each cell, for determining the wire routings between the respective cells. Each processor communicates simultaneously with its four adjacent neighbor processors to determine channel routings from one point to the next in the array of cells, wherein a channel routing includes vertical and horizontal paths. Following determination of global channel routings, exact vertical and horizontal tracks for the wire paths are as- signed. The array of processors may be utilized to wire a much larger array of cells.
400638
Hong Se J.
Nair Ravindra K.
Shapiro Eugene
International Business Machines Corporation
Saunders Raymond H.
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