Electronic circuit with array of programmable logic cells

Details Electronic circuit with array of programmable logic cells Electronic circuit with array of programmable logic cells

2007-09-18

2007-09-18

Barnie, Rexford (Department: 2819)

Electronic digital logic circuitry

Multifunctional or programmable

Having details of setting or programming of interconnections...

C326S037000, C326S039000, C326S040000, C326S041000, C326S047000, C708S200000, C708S235000

Reexamination Certificate

active

10545643

ABSTRACT:
An electronic circuit has a programmable logic cell with a plurality of programmable logic units that are capable of being configured to operate in a multi-bit operand mode and a multiplexing mode. The programmable logic units are coupled in parallel between an input circuit and an output circuit. In a multi-bit operand processing mode the input circuit is configured to supply logic input signals from different ones of the logic inputs to the programmable logic units. The programmable logic units are coupled to successive positions along a carry chain at least in the multi-bit operand mode, so as to process carry signals from the carry chain. An output circuit passes outputs from the programmable logic units in parallel in the multi-bit operand mode. The programmable logic units have look-up tables which share the same configuration bits. The programmable logic units can also have multiplexers for passing one of the received input signals when configured to operate in a multiplexing mode of operation.

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