Logic cell with improved multiplexer, barrel shifter, and...

Details Logic cell with improved multiplexer, barrel shifter, and... Logic cell with improved multiplexer, barrel shifter, and...

2006-10-10

2006-10-10

Cho, James H. (Department: 2819)

Electronic digital logic circuitry

Multifunctional or programmable

Array

C326S038000

Reexamination Certificate

active

07119575

ABSTRACT:
Logic circuits that provide improved efficiency are described. In one general embodiment, this is accomplished by feeding outputs of LEs in the logic circuit to multiplexers that receive their select signals from input terminals of the LEs in the logic circuit. In one embodiment, each of the LEs provides one output signal. The first LE in the logic circuit provides an output signal to one multiplexer, while each of the remaining LEs in the logic circuit provides an output signal to two multiplexers. In another embodiment, each of the LEs provides two output signals. The first LE in the logic circuit provides two output signals to one multiplexer, while each of the remaining LEs in the logic circuit provides two output signals to four multiplexers.

REFERENCES:
patent: 6262597 (2001-07-01), Bauer et al.
patent: 6292019 (2001-09-01), New et al.
patent: 6798240 (2004-09-01), Pedersen
Lewis et al., U.S. Appl. No. 10/364,310 filed Feb. 10, 2003.
Pedersen et al. U.S. Appl. No. 10/351,026 filed Jan. 24, 2003.

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