1
Ross H Freeman: Configurable electrical circuit having configurable logic elements and configurable interconnects. Xilinx, Skjerven Morrill MacPherson Franklin & Friel, September 26, 1989: US04870302 (718 worldwide citation)

A configurable logic array comprises a plurality of configurable logic elements variably interconnected in response to control signals to perform a selected logic function. Each configurable logic element in the array is in itself capable of performing any one of a plurality of logic functions depen ...


2
William S Carter: Configurable logic element. Xilinx, Alan H MacPherson Richard Franklin Edel M Young, November 10, 1987: US04706216 (470 worldwide citation)

A configurable logic circuit achieves versatility by including a configurable combinational logic element, a configurable storage circuit, and a configurable output select logic. The input signals to the configurable combinational logic element are input signals to the configurable logic circuit and ...


3
William S Carter: Microprocessor oriented configurable logic element. Xilinx, Alan H MacPherson, Edel M Young, Terrence E Dooher, July 19, 1988: US04758985 (262 worldwide citation)

A microprocessor controlled configurable logic circuit achieves versatility by including a configurable combinational logic element, a configurable storage circuit, a configurable status buffer, and a configurable output select logic. The input signals to the configurable combinational logic element ...


4
Stephen M Trimberger: Optimizing and operating a time multiplexed programmable logic device. Xilinx, Jeanette S Harms, Norman R Klivans, June 2, 1998: US05761483 (228 worldwide citation)

A method of optimizing a time multiplexed programmable logic device (PLD) includes entering a circuit design for the PLD, mapping the design to the physical resources of the PLD (wherein the physical resources include configurable logic elements), determining an appropriate micro cycle for each conf ...


5
Bernard J New: Field programmable gate array with distributed gate-array functionality. Xilinx, Edel M Young, E Eric Hoffman Esq, February 23, 1999: US05874834 (165 worldwide citation)

A field programmable gate array (FPGA) having a plurality of configurable logic blocks (CLBs). Each of the CLBs includes programmable interconnect resources, a field programmable configurable logic element (CLE) circuit and a corresponding non-field programmable gate array. The programmable intercon ...


6
Steven P Young, Bernard J New, Nicolas John Camilleri, Trevor J Bauer, Shekhar Bapat, Kamal Chaudhary, Sridhar Krishnamurthy: Configurable logic element with fast feedback paths. XILINX, Lois D Cartier, Edel M Young, October 5, 1999: US05963050 (103 worldwide citation)

The invention provides an FPGA interconnect structure preferably included in an array of identical tiles. Each tile comprises a logic block that includes a Configurable Logic Element (CLE) and an output multiplexer. Fast feedback paths are provided within the logic block to connect the CLE outputs t ...


7
Bernard J New: Field programmable gate array with mask programmable I/O drivers. Xilinx, E Eric Hoffman Esq, Edel M Young, June 5, 2001: US06242945 (90 worldwide citation)

A field programmable gate array (FPGA) having a plurality of configurable logic blocks (CLBs). Each of the CLBs includes programmable interconnect resources, a field programmable configurable logic element (CLE) circuit and a corresponding non-field programmable gate array. The programmable intercon ...


8
Bernard J New, Ralph D Wittig, Sundararajarao Mohan: Configurable logic element with expander structures. Xilinx, Lois D Cartier, May 28, 2002: US06396302 (81 worldwide citation)

A configurable logic element (CLE) for a field programmable gate array (FPGA) includes “expanders”, i.e., connectors that allow fast signal communication between logic blocks. Expanders allow the configurable interconnection of a plurality of logic blocks, or portions thereof, to form a single logic ...


9
Steven P Young, Shekhar Bapat, Kamal Chaudhary, Trevor J Bauer, Roman Iwanczuk: Configurable logic element with ability to evaluate five and six input functions. Xilinx, Lois D Cartier, Edel M Young, July 6, 1999: US05920202 (74 worldwide citation)

The invention provides a Configurable Logic Element (CLE) preferably included in each of an array of identical tiles. A CLE according to the invention has four function generators. The outputs of two function generators are combined with a fifth independent input in a five-input-function multiplexer ...


10
Ralph D Wittig, Sundararajarao Mohan, Bernard J New: Configurable lookup table for programmable logic devices. Xilinix, Lois D Cartier, June 4, 2002: US06400180 (53 worldwide citation)

A configurable logic element (CLE) for a field programmable gate array (FPGA) includes “expanders”, i.e., connectors that allow fast signal communication between logic blocks. Expanders allow the configurable interconnection of a plurality of logic blocks, or portions thereof, to form a single logic ...