Programmable logic datapath that may be used in a field programm

Electronic digital logic circuitry – Multifunctional or programmable – Array

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326 41, H03K 19177

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active

061217913

ABSTRACT:
A method and apparatus for providing a programmable logic datapath that may be used in a field programmable device. According to one aspect of the invention, a programmable logic datapath is provided that includes a plurality of logic elements to perform various (Boolean) logic operations. The programmable logic datapath further includes circuitry to selectively route and select operand bits between the plurality of logic elements (operand bits is used hereinafter to refer to input bits, logic operation result bits, etc., that may be generated within the logic datapath). In one embodiment, by providing control bits concurrently with operand bits to routing and selection (e.g., multiplexing) circuitry, the programmable logic datapath of the invention can provide dynamic programmability to perform a number of logic operations on inputs of various lengths on a cycle-by-cycle basis.

REFERENCES:
patent: 3980992 (1976-09-01), Levy et al.
patent: 4558411 (1985-12-01), Faber et al.
patent: 4758985 (1988-07-01), Carter
patent: 4791602 (1988-12-01), Resnick
patent: 4791603 (1988-12-01), Henry
patent: 4821183 (1989-04-01), Hauris
patent: 4823286 (1989-04-01), Lumelsky et al.
patent: 4992680 (1991-02-01), Benedetti et al.
patent: 5055712 (1991-10-01), Hawley et al.
patent: 5175862 (1992-12-01), Phelps et al.
patent: 5185706 (1993-02-01), Agrawal et al.
patent: 5220213 (1993-06-01), Chan et al.
patent: 5231588 (1993-07-01), Agrawal et al.
patent: 5250859 (1993-10-01), Kaplinsky
patent: 5321845 (1994-06-01), Sawase et al.
patent: 5473267 (1995-12-01), Stansfielf
patent: 5594364 (1997-01-01), Chan et al.
patent: 5619668 (1997-04-01), Zaidi
patent: 5670900 (1997-09-01), Worrell
patent: 5802541 (1998-09-01), Reed
patent: 6049223 (2000-04-01), Lytle et al.
International Preliminary Examination Report for International Application No. PCT/US98/11889 mailed on Nov. 4, 1999.
International Search Report, Int'l Appln PCT/US98/11889, mailed Oct. 23, 1998, 5 pgs.
C.S. Wallace, "A Suggestion for a Fast Multiplier," IEEE Transaction son Electronic Computers, Feb. 1964, pp. 14-17.
Charles R. Baugh and Bruce A. Wooley, "A Two's Complement Parallel Array Multiplication Algorithm," IEEE Transactions on Computers, vol. C-22, No. 12, Dec. 1973, pp. 1045-1047.
Earl E. Swartzlander, Jr. "Merged Arithmetic," IEEE Transactions on Computers, vol. C-5, No. 10, Oct. 1980, pp. 946-950.
Michael Bolotski, Andre DeHon, and Thomas F. Knight, Jr., Transit Note #95 Unifying FPGAs and SIMD Arrays, MIT Transit Project, Sep. 1993, 14 pps.
Debabrata Ghosh, et al., "Architectural Synthesis of Performance-Driven Multipliers with accumulator Interleaving," 30th ACM/IEEE Design Automation Conference, (1993) pp. 303-307.
Andre DeHon, Transit Note #118 Notes on Coupling Processors with Reconfigurable Logic, MIT, pp. 1-40.
Andre DeHon, Reconfigurable Architectures for General-Purpose Computing, 258 pps.
PCT Written Opinion, Int'l Appln PCT/US98/11889, mailed Jun. 1, 1999, 6 pps .

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