Design method of routing signal lines between circuit blocks for equalizing characteristics of circuit blocks and semiconductor integrated circuit device designed therethrough
AssigneeNEC Corporation
InventorYoshitomo Numaguchi
Life of this patent
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Abstract
An integrated circuit device is layoutted on a semiconductor chip, and signal lines are routed between circuit blocks to be integrated on the semiconductor chip, wherein a conductive line is branched from another conductive line passing over one of certain circuit blocks expected to be identical in circuit characteristics with one another in order to pass over the other of the certain circuit blocks, thereby equalizing electric influence of a signal passing through the conductive line on the certain circuit blocks.
Claims27
A design method for routing conductive lines between nodes to be electrically connected, comprising:
- determining circuit blocks expected to be identical in circuit characteristics with one another from among all circuit blocks to be integrated on a substrate;
- selectively arranging said identical circuit blocks in an area of said substrate into at least one group of identical circuit blocks;
- and
- selectively routing said conductive lines such that, if a first conductive line of said conductive lines passes over a first circuit block of a first group of said at least one group of identical circuit blocks, then at least one of a conductive sub-line is branched from said first conductive line so as to pass over any other identical circuit block in said first group of identical circuit blocks.
A semiconductor integrated circuit device fabricated on a semiconductor chip, comprising:
- a plurality of circuit blocks having at least one group of said circuit blocks that are identical in circuit characteristics with one another;
- and
- a plurality of conductive lines selectively interconnecting said plurality of circuit blocks, such that, if any of said plurality of conductive lines passes over any of said at least one group of identical circuit blocks, a conductive sub-line branches from said conductive line so as to pass over at least one other identical circuit block in said group.
A method of routing interconnecting lines between terminals of circuit blocks to be integrated into a circuit, comprising:
- determining, from among all said circuit blocks, circuit blocks expected to share identical circuit characteristics;
- selectively arranging said identical circuit blocks into at least one group of identical circuit blocks, each said at least one group containing at least two identical circuit blocks;
- and
- selectively routing said interconnecting lines such that, if any of said lines passes over any of said at least one group of identical circuit blocks, then providing an extension from said line, said extension passing over at least one other identical circuit block in said any of at least one group.
Dependencies are inferred from the claim text.