The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2008
Filed:
Mar. 31, 2004
Alex Levin, Port Orchard, WA (US);
Kim Soi ER, Penang, MY;
Alex Levin, Port Orchard, WA (US);
Kim Soi Er, Penang, MY;
Intel Corporation, Santa Clara, CA (US);
Abstract
Method and apparatus for analog compensation of driver output signal slew rate against device impedance variation. The method includes a signal termination device coupled to a driver output pad. In one embodiment, driver includes a pull-up circuit having at least one pull-up device and a pull-down circuit including at least one pull-down device. In one embodiment, the pull-up circuit and the pull-down circuit including corresponding pull-up and pull-down compensation resistive elements. Accordingly, the pull-up and pull-down compensation resistive elements provide analog compensation of a driver output signal slew rate against device impedance variation. In one embodiment, a slew rate of the driver output signal is within a predetermined slew rate range to avoid uncontrolled fast switching as well as unnecessarily slow switching in the driver output signal. Other embodiments are described and claimed.