Electronic digital logic circuitry – Multifunctional or programmable – Array
Reexamination Certificate
2005-05-17
2005-05-17
Tran, Anh (Department: 2819)
Electronic digital logic circuitry
Multifunctional or programmable
Array
C326S039000, C326S040000
Reexamination Certificate
active
06894533
ABSTRACT:
A programmable logic integrated circuit device has a plurality of regions of programmable logic disposed on the device in a plurality of intersecting rows and columns of such regions. Interconnection resources (e.g., interconnection conductors, signal buffers/drivers, programmable connectors, etc.) are provided on the device for making programmable interconnections to, from, and/or between the regions. At least some of these interconnection resources are provided in two forms that are architecturally similar (e.g., with similar and substantially parallel routing) but that have significantly different signal propagation speed characteristics. For example, a major or larger portion of such dual-form interconnection resources may have what may be termed normal signal speed, while a smaller minor portion may have significantly faster signal speed. Secondary (e.g., clock and clear) signal distribution may also be enhanced, and so may be input/output circuitry and cascade connections between adjacent or nearby logic modules on the device.
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Huang Wei-Jen
Hutton Michael
Kazarian Peter J.
Leaver Andrew
Maruri Victor
Altera Corporation
Court Andrew Van
Fish & Neave
Jackson Robert R.
Tran Anh
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