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:
Apr. 05, 2021
Rambus Inc., San Jose, CA (US);
Ian Shaeffer, Los Gatos, CA (US);
Kyung Suk Oh, Cupertino, CA (US);
RAMBUS INC., Cupertino, CA (US);
Abstract
A system has a plurality of memory devices arranged in a fly-by topology, each having on-die termination (ODT) circuitry for connecting to an address and control (RQ) bus. The ODT circuitry of each memory device includes a set of one or more control registers for controlling on-die termination of one or more signal lines of the RQ bus. A memory controller sends register values, for storage in a plurality of registers of a respective memory device. The register values include register values that represent one or more impedance values of on-die termination (ODT) impedances to apply to the respective inputs of the respective memory device that receive the CA signals, and one or more register values to selectively enable application of a chip select ODT impedance to the chip select input of the respective memory device.