Electronic digital logic circuitry – Multifunctional or programmable – Array
Reexamination Certificate
2008-05-20
2008-05-20
Barnie, Rexford N. (Department: 2819)
Electronic digital logic circuitry
Multifunctional or programmable
Array
C326S037000, C326S038000, C326S047000
Reexamination Certificate
active
07375552
ABSTRACT:
A programmable logic block provides two lookup table (LUT) output signals to a general interconnect structure in an integrated circuit (IC), one output terminal of the logic block being dedicated to a first LUT output signal, and the other output terminal having a selectable input that can provide either of the two LUT output signals to the general interconnect structure. An IC includes an interconnect structure (e.g., a programmable interconnect structure) and a programmable logic block coupled to the interconnect structure. The programmable logic block includes a LUT having two output terminals. A first LUT output terminal is non-programmably coupled to the interconnect structure via a first output terminal of the logic block. Both the first and the second LUT output terminals are programmably coupled to the interconnect structure via a second output terminal of the logic block, e.g., via a programmable multiplexer selecting between the two LUT output terminals.
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Bauer Trevor J.
Chirania Manoj
Kondapalli Venu M.
Young Steven P.
Barnie Rexford N.
Cartier Lois D.
Crawford Jason M
Xilinx , Inc.
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