Impedance control circuits and methods of controlling impedance

Details Impedance control circuits and methods of controlling impedance Impedance control circuits and methods of controlling impedance

2007-10-23

2007-10-23

Tran, Anh Q. (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Bus or line termination

C326S032000, C326S034000

Reexamination Certificate

active

11165394

ABSTRACT:
A circuit for controlling impedance may include an impedance adjustment circuit and a control signal generation circuit. The impedance adjustment circuit may adjust an impedance value based on a control signal. The control signal generation circuit may provide the impedance adjustment circuit with a control signal that corresponds to one of an impedance value at a first clock cycle and an impedance value at a second clock cycle that approaches a target impedance.

REFERENCES:
patent: 6469539 (2002-10-01), Kim
patent: 6570402 (2003-05-01), Koo et al.
patent: 11-027132 (1999-01-01), None
patent: 2000-0002393 (2000-01-01), None
patent: 2002-0042093 (2002-06-01), None
patent: 2003-13983 (2003-02-01), None
patent: 2003-34237 (2003-05-01), None
patent: 10-2004-0004792 (2004-01-01), None
Korean Office Action dated Apr. 27, 2006.

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