Reconfigurable logical circuit
First Claim
1. A reconfigurable logic circuit comprising a plurality of logic blocks that include a full adder, two preposition logics that perform a plurality of logic operations according to configuration data, and an extended logic block that can perform the logic operation of one or more kinds, whereinoutputs of the two preposition logics are respectively connected to two argument inputs of the full adder, anda carry output of the full adder is connected to the extended logic block, one selected from a plurality of signals including a fixed logic value according to the configuration data is input to a carry input of the full adder, and an extended logic block of a subsequent logic block generates an output signal according to an output of the extended logic block.
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Abstract
Provided is a reconfigurable logic circuit that can effectively use a preposition logic that composes a logic block. The reconfigurable logic block according to the present invention includes a plurality of logic blocks (199) having a full adder (30), two preposition logics (20) that perform a plurality of logic operations according to configuration data, an extended logic block (60) that can perform the logic operation of one or more kinds. Outputs (21A and 21B) of the preposition logic are respectively connected to two argument inputs (A and B) of the full adder (30). A carry output (CO) of the full adder (30) is connected to the extended logic block (60). One selected from a plurality of signals including a fixed logic value is input to a carry input (CI) of the full adder according to the configuration data, and the extended logic block of other logic block generates an output signal according to an output of the extended logic block.
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Citations
20 Claims
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1. A reconfigurable logic circuit comprising a plurality of logic blocks that include a full adder, two preposition logics that perform a plurality of logic operations according to configuration data, and an extended logic block that can perform the logic operation of one or more kinds, wherein
outputs of the two preposition logics are respectively connected to two argument inputs of the full adder, and a carry output of the full adder is connected to the extended logic block, one selected from a plurality of signals including a fixed logic value according to the configuration data is input to a carry input of the full adder, and an extended logic block of a subsequent logic block generates an output signal according to an output of the extended logic block.
Specification