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:
Jan. 04, 2011
Filed:
Mar. 16, 2006
David R. Rosselot, Atlanta, GA (US);
Andrew Mclean, Duluth, GA (US);
David R. Rosselot, Atlanta, GA (US);
Andrew McLean, Duluth, GA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A system and method is disclosed for monitoring the quality of a data link in a 100 Mb Ethernet physical layer device. A link quality monitor detects operational values of data link parameters such as digital equalizer C1 coefficient, digital adaptive gain control, digital base line wander, recovered clock long-term frequency offset, and recovered clock frequency control. When an operational value of a data link parameter exceeds a high or low threshold value, the link quality monitor sends a drop link signal to cause the current data link to be dropped and a new data link established.