Bus driver failure detection system

Details Bus driver failure detection system Bus driver failure detection system

1996-11-27

1998-11-10

Santamauro, Jon

Electronic digital logic circuitry

Interface

Current driving

226 83, 226 16, H03K 190185

Patent

active

058349499

ABSTRACT:
The invention provides a bus driver failure detection system which facilitates detection of a failure of a bus driver from which data are sent out to a bus. The bus driver failure detection system includes a plurality of bus drivers for sending out signals to a single bus, at least one receiver connected to the bus, and an impedance control circuit for controlling the bus so that, upon testing, the bus does not exhibit a high impedance state. The impedance control circuit may be constructed as a circuit which holds a value of the bus in response to a test signal.

REFERENCES:
patent: 4748426 (1988-05-01), Stewart
patent: 4849658 (1989-07-01), Iwamura et al.
patent: 5039874 (1991-08-01), Anderson
patent: 5285119 (1994-02-01), Takahashi
patent: 5498976 (1996-03-01), Hwang

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