Integrated circuit having fast interconnect paths between...

Details Integrated circuit having fast interconnect paths between... Integrated circuit having fast interconnect paths between...

2007-05-15

2007-05-15

Barnie, Rexford (Department: 2819)

Electronic digital logic circuitry

Multifunctional or programmable

Array

C326S037000, C326S038000, C326S039000, C326S040000, C326S047000

Reexamination Certificate

active

11151987

ABSTRACT:
A programmable logic block provides fast interconnect paths between memory element output terminals and the input terminals of carry multiplexers in the same logic block. An integrated circuit includes an interconnect structure, a function generator, a carry chain multiplexer coupled to an output terminal of the function generator, and a memory element programmably coupled to the output terminal of the function generator. An output signal from the memory element can traverse the interconnect structure to reach an input terminal of the carry multiplexer. However, a “fast connect” path is also provided that interconnects the memory element output with an input terminal of the carry multiplexer, without traversing the interconnect structure. In some embodiments, fast connect paths are also provided to the input terminals the function generator, and to the input terminals of other function generators and/or carry multiplexers in the same logic block.

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