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:
Dec. 30, 2025
Filed:
Jun. 12, 2023
International Business Machines Corporation, Armonk, NY (US);
Marcel A. Kossel, Reichenburg, CH;
Carrie Ellen Cox, Apex, NC (US);
Eric John Lukes, Stewartville, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Embodiments of the present disclosure provide systems and methods for implementing separate and orthogonal impedance tuning (Zcal) and feed forward equalization (FFE) operations of a segmented multiple level source-series terminated (SST) transmitter. An SST transmitter output driver comprising a plurality of parallel-connected output driver slices coupled to a data communication link and a multiple-tap FFE unit comprising at least one pre-cursor tap, main tap or post-cursor tap. The system performs impedance tuning within each of the plurality of parallel-connected output driver slices of the output driver. The system performs FFE resolution on the plurality of parallel-connected output driver slices of the output driver by assigning respective ones of the plurality of parallel-connected output driver slices to a specific FFE tap of the of the at least one pre-cursor tap, main tap or post-cursor tap of the FFE unit.