Multiple interface driver circuit for a peripheral storage devic

Details Multiple interface driver circuit for a peripheral storage devic Multiple interface driver circuit for a peripheral storage devic

1992-09-24

1996-10-15

Hayes, Gail O.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

34082583, 34082503, 39520001, 39520002, 39520006, 395827, 395830, 439 59, 439 75, H04L 1228, H04L 1240, H01R 909

Patent

active

055663478

ABSTRACT:
A multiple interface driver circuit for transmitting data in a channel according to one of several different signal protocols. In the exemplary embodiment, two separate bus driver circuits are connected to a common output terminal and may be selected under software control. When one such driver is selected, the other remains in an inactive state, presenting a high output impedance to the driver signal from the other. In an alternative embodiment, one interface driver circuit is connected to the output terminal and the driver circuit output signal is either left unchanged or modified under software control by a second pullup driver circuit. The unconditioned output signal conforms to a first interface protocol. After conditioning by the second pullup driver circuit, the output signal conforms to a second interface protocol.

REFERENCES:
patent: 3846763 (1974-11-01), Riikonen
patent: 4790762 (1988-12-01), Harms et al.
patent: 4936785 (1990-06-01), Krug et al.
patent: 4984202 (1991-01-01), Kawahara et al.
patent: 5027315 (1991-06-01), Agrawal et al.
patent: 5036224 (1991-07-01), Wendell
patent: 5043938 (1991-08-01), Ebersole

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