Multi-purpose peripheral bus driver apparatus and method

Details Multi-purpose peripheral bus driver apparatus and method Multi-purpose peripheral bus driver apparatus and method

1995-11-13

1998-05-12

Harvey, Jack B.

Multiplex communications

Wide area network

Packet switching

395306, 395281, 370570, 370270, H03K 1760

Patent

active

057519781

ABSTRACT:
An output driver (10) for a bus interface and associated method of operation. The output driver (10) comprises a first driver circuit (12), a second driver circuit (14), and a controller (16). The first driver circuit (12) provides data at a first current level to an output (18) while the second driver circuit (14) provides data to the output (18) at a second current level when activated. The controller (16), by selectively operating the first driver circuit (12) and the second driver circuit (14) causes the output driver (10) to selectively operate in differing modes of operation over time. In this fashion, the output driver (10) operates in Classical Mode (84), Active Negate Mode (80), Pulsed Negation Mode (82), and Differential Mode (86) based upon the requirements of peripheral devices (106, 108. 110. 112) and peripheral bus (20) requirements. The present invention also includes a data processing system (100) and method (150) for configuring a bus controller (102), output drivers, and/or peripheral devices (106, 108, 110, 112) on a peripheral bus (104).

REFERENCES:
patent: 5396601 (1995-03-01), Tokushige et al.
patent: 5459453 (1995-10-01), Minerd et al.
patent: 5479124 (1995-12-01), Pun et al.
patent: 5583454 (1996-12-01), Hawkins et al.

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