Predictable repeater routing in an integrated circuit design

Details Predictable repeater routing in an integrated circuit design Predictable repeater routing in an integrated circuit design

2006-10-06

2009-02-03

Whitmore, Stacy A (Department: 2825)

Computer-aided design and analysis of circuits and semiconductor

Nanotechnology related integrated circuit design

C716S030000

Reexamination Certificate

active

07487488

ABSTRACT:
A mechanism is disclosed for assigning repeaters to signal paths in an integrated circuit design. The mechanism involves reserving, in a first metal layer of the integrated circuit design, metal tracks for routing signals. Access points to a plurality of repeaters are reserved in a second metal layer of the integrated circuit design. Each access point is associated with a particular repeater. The design may have other layers between the second metal layer and a region reserved for the repeaters. The number of repeaters may be based on the number of metal tracks that are available to route signals through the first region. Signal paths are assigned routes that comprise at least a portion of one or more of the metal tracks. A route from signal paths requiring a repeater to access points to a particular repeater is determined. Thus, the signal paths are assigned to a repeater.

REFERENCES:
patent: 6408426 (2002-06-01), Josephson et al.
patent: 6477690 (2002-11-01), Witte et al.
patent: 6928401 (2005-08-01), Wanek
patent: 6996512 (2006-02-01), Alpert et al.

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