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.

Date of Patent:
May. 17, 2016

Filed:

Sep. 10, 2014
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Steven K. Jenkins, Raleigh, NC (US);

Robert B. Likovich, Jr., Wake Forest, NC (US);

Michael R. Trombley, Cary, NC (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 (2006.01); G11C 7/10 (2006.01); G11C 29/02 (2006.01); G06F 12/00 (2006.01); G11C 11/406 (2006.01); G11C 11/40 (2006.01);
U.S. Cl.
CPC ...
G11C 7/1072 (2013.01); G06F 12/00 (2013.01); G11C 7/1066 (2013.01); G11C 7/1093 (2013.01); G11C 11/40622 (2013.01); G11C 29/022 (2013.01); G11C 29/023 (2013.01); G11C 29/028 (2013.01); G11C 11/40 (2013.01); G11C 2207/2254 (2013.01); G11C 2207/2272 (2013.01);
Abstract

Memory access alignment in a double data rate ('DDR') system, including: executing, by a memory controller, one or more write operations to a predetermined address of a DDR memory module, including sending to the DDR memory module a predetermined amount of data of a predetermined pattern along with a data strobe signal; executing, by the memory controller, a plurality of read operations from the predetermined address of the DDR memory module, including capturing data transmitted from the DDR memory module; and determining, by the memory controller, a read adjust value and a write adjust value in dependence upon the data captured in response to the read operations.


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