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. 07, 2021
Filed:
Feb. 24, 2020
Kioxia Corporation, Tokyo, JP;
Shinya Koizumi, Kamakura Kanagawa, JP;
KIOXIA CORPORATION, Tokyo, JP;
Abstract
A memory system includes: a plurality of nonvolatile memories; a controller connected to the plurality of nonvolatile memories via a plurality of channels that includes a plurality of memory physical layer circuits arranged corresponding to the plurality of channels, respectively, one or more pads for calibration corresponding to the plurality of memory physical layer circuits, and a processor that controls the plurality of memory physical layer circuits. A single reference resistor is connected to the plurality of memory physical layer circuits via the pad. An output based on a ZQ calibration of the plurality of memory physical layer circuits is wired-OR connected to the single reference resistor via the one or more pads. The processor performs a calibration for each of the plurality of memory physical layer circuits in a time division manner using the single reference resistor.