INTERCONNECTION AND INPUT/OUTPUT RESOURCES FOR PROGRAMMABLE LOGIC INTEGRATED CIRCUIT DEVICES
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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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Citations
21 Claims
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1. (canceled)
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2. An integrated circuit, comprising:
a plurality of regions arranged in a multi-dimensional interconnection network having a plurality of input terminals and at least one output terminal, wherein; a first subset of conductors along a first dimension of the multi-dimensional interconnection network is configured to form part of a first normal speed portion of the interconnection network; and a second subset of conductors along the first dimension of the multi-dimensional interconnection network is configured to form part of a second high-speed portion of the interconnection network, wherein the conductors of the second high-speed portion is programmable to directly connect the output of any of the regions to at least one of the input terminals of substantially any of the adjacent regions in the first dimension. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
Specification