Intel Corporation

Isaac P Abraham

David R Johnson

Jed D Griffin

David Peart

In one embodiment of the invention, an update circuit having a bus driver to drive a bus dynamically receives an update compensation code. The bus driver receives data at a data clock signal. The update compensation code controls impedance matching at the bus driver according to the data. A code generator generates the update compensation code at a base clock signal. The base clock signal is synchronized with the data clock signal. The base clock signal has an update interval and a quiet interval. A distribution ring interface distributes the update compensation code to the update circuit synchronously with the base clock signal.

Dynamically updating impedance compensation code for input and output drivers

An active resistor design is adapted to implement a linearized transistor driver that includes a first FET coupled between a supply potential and an output node, with the gate of the first FET being coupled to an input node. Second and third FETs are coupled between the output node and a reference potential, with the gate of the second FET being coupled to the input node. A switching circ

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Kent, WA, United States of America

Isaac P Abraham