Pseudodynamic off-chip driver calibration

Details Pseudodynamic off-chip driver calibration Pseudodynamic off-chip driver calibration

2007-12-04

2007-12-04

Le, Don (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Bus or line termination

C326S083000, C326S087000

Reexamination Certificate

active

10975384

ABSTRACT:
A driver system, a driver calibration circuit arrangement for calibration of an impedance of a driver circuit arrangement, and a method for calibration of an impedance of a driver circuit arrangement can achieve improved driver behavior, with respect to undesirable distortions of the slew rate caused by off-chip drivers of DDR memory modules. A driver system has a first driver part with at least one variable impedance by which an operating point of the first driver part is determined with respect to a first potential and a second potential. The potentials supply the first driver part. A first monitoring device adjusts an impedance value of the variable impedance such that the operating point differs from a mid-point of the first and of the second potential.

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patent: 2003/0025535 (2003-02-01), Raychaudhuri

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