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US 7,584,447 B2Granted
PLD architecture for flexible placement of IP function blocks
AssigneeAltera Corporation
InventorsAndy L. Lee, Cameron McClintock, Brian Johnson, Richard Cliff, Srinivas Reddy, Chris Lane, Paul Leventis, Vaughn Timothy Betz, David Lewis
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Abstract
In accordance with one aspect of the invention, a hole is formed within an LE array of a PLD by interrupting the LE array base signal routing architecture such that a hole is left for IP function block to be incorporated. An interface region is provided for interfacing the remaining LE array base signal routing architecture to the IP function block.
Claims15
A programmable logic device, comprising:
- a plurality of logic elements arranged in an array of rows and columns;
- at least one IP function block that is incorporated into a location in the array of logic elements spanning a plurality of adjacent and intersecting rows and columns, wherein the incorporation of the IP function block displaces logic elements from that location;
- and
- interface circuitry operable to interconnect the IP function block to the logic elements, wherein the interface circuitry is located adjacent to at least a portion of the IP function block between the IP function blocks and the logic elements.
1 more element
Dependencies are inferred from the claim text.