Electronic digital logic circuitry – Multifunctional or programmable – Array
Patent
1993-10-27
1995-09-05
Hudspeth, David R.
Electronic digital logic circuitry
Multifunctional or programmable
Array
326 41, H03K 19173
Patent
active
054481856
ABSTRACT:
According to the present invention, a plurality of programmable multi-bit output functional block modules, each capable of assuming the functionality of one of the set of adders, subtracters, magnitude comparators, identity comparators, up/down counters, registers, multi-bit ANDs, and similar devices, are placed in predetermined locations of the FPGA chip. The number of functional blocks is much fewer than the number of FPGA modules on the chip. Each of the functional blocks has a plurality of inputs and outputs, each of which is capable of being connected to the neighboring programmable interconnect resources. Communication between and amongst functional blocks is carried out with the standard programmable resources available on board the FPGA chip.
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patent: 4983959 (1991-01-01), Breuninger
patent: 5028821 (1991-07-01), Kaplinsky
patent: 5220213 (1993-06-01), Chan
patent: 5245227 (1993-09-01), Furtek
Actel Corporation
Hudspeth David R.
Sanders Andrew
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