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:
May. 04, 2004
Filed:
Oct. 02, 2000
Alan S. Fiedler, Bloomington, MN (US);
Brett D. Hardy, Bloomington, MN (US);
LSI Logic Corporation, Milpitas, CA (US);
Abstract
A serial data communication receiver includes a serial data input, first and second equalizers, first and second capture latch circuits, and an equalization control circuit. The first and second equalizers are coupled to the serial data input and have first and second equalized serial data outputs, respectively. Each equalizer has a frequency response that is variable over a range of frequency response settings. The first and second capture latch circuits are coupled to the first and second equalized serial data outputs, respectively, in a phase-locked loop and have first and second recovered data outputs, respectively. The equalization control circuit measures a data eye size of the second equalized serial data output over the range of frequency response settings of the second equalizer and sets the frequency response of the first equalizer to one of the frequency response settings based on the measured data eye sizes.