Routing resources for hierarchical FPGA

Details Routing resources for hierarchical FPGA Routing resources for hierarchical FPGA

1995-06-06

1997-12-23

Westin, Edward P.

Electronic digital logic circuitry

Multifunctional or programmable

Array

H03K 19177

Patent

active

057010919

ABSTRACT:
In an FPGA having a hierarchical routing structure, additional routing lines are provided which have different destinations for different cells within a block. A pattern is chosen which allows signal lines to turn corners conveniently. In one embodiment having cells arranged into 4.times.4 blocks, cells on the diagonal of a block generate signals which are provided to switches which form one boundary of the block.

REFERENCES:
patent: 5019736 (1991-05-01), Furtek
patent: 5208491 (1993-05-01), Ebeling
patent: 5218240 (1993-06-01), Camarota
patent: 5448186 (1995-09-01), Kawata
patent: 5512765 (1996-04-01), Gaverick

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