Electronic digital logic circuitry – Multifunctional or programmable – Array
Patent
1995-07-12
1997-05-27
Harvey, Jack B.
Electronic digital logic circuitry
Multifunctional or programmable
Array
326 30, H04M 704
Patent
active
056340141
ABSTRACT:
An I/O bus interface cell includes a driver circuit having an input terminal fed by a logic signal and an output terminal to produce in response thereto a drive signal having selectable rise and fall time characteristics in accordance with a reference voltage provided to the driver. The I/O cell also includes a receiver circuit having an input terminal coupled to said output terminal of said driver with the receiver disposed to latch an unresolved, unamplified received signal prior to resolving the state of the signal. The I/O cell further includes a termination circuit having a terminal connected to the output of said driver, and having a selectable impedance characteristic at said terminal, with said selectable impedance being in accordance with a reference voltage provided to an input of said termination circuit. Preferably, the I/O cell the driver, receiver and termination circuits are fabricated on a common semiconductor substrate.
REFERENCES:
patent: 3585399 (1971-06-01), Andrews
patent: 4703198 (1987-10-01), Porter et al.
patent: 4920339 (1990-04-01), Friend et al.
patent: 4992752 (1991-02-01), Cioffi
patent: 5029284 (1991-07-01), Feldbaumer et al.
patent: 5049836 (1991-09-01), Christie et al.
patent: 5095231 (1992-03-01), Satori et al.
patent: 5134311 (1992-07-01), Biber et al.
patent: 5185538 (1993-02-01), Kondoh et al.
patent: 5187454 (1993-02-01), Collins et al.
patent: 5202649 (1993-04-01), Kashiwa
patent: 5294845 (1994-03-01), McMahan et al.
patent: 5296756 (1994-03-01), Patel et al.
patent: 5311081 (1994-05-01), Donaldson et al.
patent: 5329190 (1994-07-01), Igarashi et al.
patent: 5347177 (1994-09-01), Lipp
patent: 5357211 (1994-10-01), Bryson et al.
Electronics One-Seven, 1976 pp. 7-124.
Coyle Joseph P.
Gist William B.
Digital Equipment Corporation
Fisher Arthur W.
Harvey Jack B.
Maloney Denis G.
McGuinness Lindsay G.
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