Interconnect lines including tri-directional buffer circuits

Details Interconnect lines including tri-directional buffer circuits Interconnect lines including tri-directional buffer circuits

1995-10-26

1997-08-12

Westin, Edward P.

Electronic digital logic circuitry

Multifunctional or programmable

Array

326 39, 326 47, H03K 19177, H03K 19173

Patent

active

056569505

ABSTRACT:
A metal interconnect line for conducting a first signal from a first line segment of a field programmable gate array to a second line segment. The metal interconnect line substantially spans across the width of the field programmable gate array and has at least one bi-directional buffer that separates the metal interconnect line into a plurality of independent segments. Each of these segments can conduct signals independently from the other segments when the bidirectional buffer is in a tristate mode. Alternatively, a single signal may be routed through the entire length of the metal line in one or the other direction, and repowered along the way. One or more of the bi-directional buffers are used to actively drive the signal(s) onto later segments of the metal interconnect line.

REFERENCES:
patent: Re34363 (1993-08-01), Freeman
patent: 4642487 (1987-02-01), Carter
patent: 4695740 (1987-09-01), Carter
patent: 4713557 (1987-12-01), Carter
patent: 4835415 (1989-05-01), Hsieh
patent: 5497108 (1996-03-01), Menon et al.
patent: 5512765 (1996-04-01), Gaverick

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