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:
Oct. 11, 2022
Filed:
Jun. 30, 2021
Texas Instruments Incorporated, Dallas, TX (US);
Ani Xavier, Bengaluru, IN;
Jagannathan Venkataraman, Bengaluru, IN;
Nagalinga Swamy Basayya Aremallapur, Ranebennur, IN;
Aviral Singhal, Bengaluru, IN;
Arun Mohan, Bangalore, IN;
Rakesh Chikkanayakanahalli Manjunath, Bangalore, IN;
Aravind Ganesan, Bangalore, IN;
Harshavardhan Adepu, Bangalore, IN;
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Abstract
A receiver circuit comprising an equalizer and a method of correcting offset in the equalizer. In an example, the equalizer includes a plurality of delay stages for sampling and storing a sequence input samples, and a plurality of coefficient gain stages, each coupled to a corresponding delay stage to apply a gain corresponding to a coefficient value. The outputs of the coefficient gain stages are summed to produce a weighted sum for quantization by a slicer. Offset correction circuitry is provided, including memory storing a look-up table (LUT) for each coefficient gain stage, each storing offset correction values corresponding to the available coefficient values for the coefficient gain stage. Addressing circuitry retrieves the offset correction values for the coefficient values currently selected for each gain stage, and applies an offset correction corresponding to the sum of the retrieved offset correction values.