Configurable IC's with carry bypass circuitry
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United States of America Patent
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Issued Date -
Oct 18, 2007
app pub date -
Mar 15, 2005
filing date -
Nov 8, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Some embodiments provide a configurable IC that includes several configurable logic circuits. The logic circuits include several sets of associated configurable logic circuits, each set for performing an add or subtract operation. For each set of associated configurable logic circuits, the configurable IC includes a carry circuit for performing a carry operation associated with the add or subtract operation. For each set of associated configurable logic circuit, the configurable IC includes a carry bypass circuit for bypassing the carry circuit during an add or subtract operation. Some embodiments provide a configurable IC that includes several configurable logic circuits. The logic circuits include several sets of associated configurable logic circuits for performing an add or subtract operation. The operation includes a carry operation. For each set of associated configurable logic circuit, the configurable IC includes a carry bypass circuit for bypassing the carry operation during an add or subtract operation.
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