Node with coupling resistor for limiting current flow through dr

Details Node with coupling resistor for limiting current flow through dr Node with coupling resistor for limiting current flow through dr

1989-03-23

1992-09-08

Lee, Thomas C.

Boots, shoes, and leggings

364DIG1, 364DIG2, 364239, G06F 1300

Patent

active

051465639

ABSTRACT:
A node includes logic circitry for transmitting and receiving data on a backplane bus. The driver in the transmitting logic in the node acts with the current source provided by the bus to decrease the transition time of the data transmitted onto the bus. A coupling resistor is included in the node for individually coupling the driver in the node to the bus for limiting voltage excursions on the bus and providing impedance matching between the node and bus and permitting driver overlap at the bus so that higher speed and lower power dissipation occurs. In the preferred embodiment, CMOS logic circuitry is utilized.

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Personal Computer XT and Portable Personal Computer Technical Reference, 4th ed. Boca Raton Fla., IBM, 1984, pp. (1--1) to (3-10).
Uffenbeck, T. "Electrical Characteristics of a Bus" in: Microcomputers and Microprocessors: The 8080, 8085, and Z-80 Programming, Interfacing, and Troubleshooting (New Jersey, Englewood Cliffs, 1985), pp. 142-160.
CMOS Cookbook, Second Edition, 1988, Howard W. Sams & Co. (Publishers), Don Lancaster (Author) Revised by Howard M. Berlin, pp. 245-247.
Microcomputer Buses and Links, 1986, U.S. Edition published by Academic Press Inc., D. Del Corso, H. Kirrman and J. D. Nicoud (Authors), pp. 37, 38.

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