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:
Nov. 07, 2023
Filed:
Aug. 30, 2021
Cadence Design Systems, Inc., San Jose, CA (US);
Ashwin S. M., Karnataka, IN;
Anirudha Shelke, Karnataka, IN;
Navin Kumar Mishra, Karnataka, IN;
Phalguni Bala, Karnataka, IN;
Younus Syed, Karnataka, IN;
Kiran Baby, Karnataka, IN;
Sudhir Kumar Katla Shetty, Karnataka, IN;
Cadence Design Systems, Inc., San Jose, CA (US);
Abstract
In a receiver having at least a first equalizer and a sampler, a calibration module jointly calibrates a reference voltage and one or more equalizer coefficients. For each of a set of test reference voltages, an equalizer coefficient for the first equalizer may be learned that maximizes a right eye boundary of an eye diagram of a sampler input signal to a sampler of the receiver following the equalization stage. Then, from the possible pairs of reference voltages and corresponding optimal equalizer coefficients, a pair is identified that maximizes an eye width of the eye diagram. After setting the reference voltage, the first equalizer coefficient may then be adjusted together with learning a second equalizer coefficient for the second equalizer using a similar technique.