Electronic digital logic circuitry – Multifunctional or programmable – Array
Patent
1995-05-02
1996-10-08
Westin, Eward P.
Electronic digital logic circuitry
Multifunctional or programmable
Array
326105, H03K 1982, H03K 1700
Patent
active
055635288
ABSTRACT:
A multiplexer for a programmable logic device (PLD) includes a control line decode circuit that substantially reduces the number of control lines necessary to program a multiplexer. Each multiplexer input line is programmably connected to at least three output lines to increase the number of routing options. A TTL buffer circuit located at the output of the multiplexer provides the user with various output signal options, whereas a word line driver coupled to the TTL buffer circuit increases signal drive. Local feedback signals are provided to the multiplexer to increase PLD functionality. Signals from the I/O pads are routed directly to the multiplexer rather than the UIM, thereby improving PLD speed. Moreover, using the multiplexer minimizes the number of input lines because the UIM is still available for routing connections. Therefore, the present invention provides both fast cycle time and fast multiple level logic.
REFERENCES:
patent: 4048626 (1977-09-01), Fett
patent: 4721868 (1988-01-01), Cornell et al.
patent: 4871930 (1989-10-01), Wong et al.
patent: 5130704 (1992-07-01), Ogawa et al.
patent: 5268598 (1993-12-01), Pedersen et al.
patent: 5311479 (1994-05-01), Harada
patent: 5446700 (1995-08-01), Iwase
J. F. Wakerly, "Digital Design Principles and Practices", pp. 247-262, Prentice Hall, 1990.
Diba Sholeh
Silver Joshua M.
Glenn Michael A.
Harms Jeanette S.
Roseen Richard
Westin Eward P.
Xilinx , Inc.
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