Importance

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Abstract

A bus termination method and apparatus, specifically, a terminator circuit, a driver/terminator circuit, and appropriate control logic. The terminator circuit and the driver/terminator circuit provide termination of an interface node to one of a first and a second voltage potential selected according to a previous logic value sampled on the input node at a time determined by a clock signal. The driver/terminator circuit also drives data values on the interface node. The terminator circuit and the driver/terminator circuit can be used in bus agents in a computer system. In one computer system configuration, a driving bus agent drives a signal line which is terminated by a predetermined terminating bus agent. Each bus agent compares its device identification to a bus master identification to determine whether to drive, terminate, or tristate the bus.

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First Claim