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:
Apr. 23, 2019

Filed:

Feb. 12, 2018
Applicant:

Realtek Semiconductor Corporation, Hsinchu, TW;

Inventors:

Chun-Chi Yu, Hsinchu County, TW;

Chih-Wei Chang, Hsinchu County, TW;

Shen-Kuo Huang, Hsinchu, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 29/00 (2006.01); G11C 29/02 (2006.01); G11C 11/4076 (2006.01); G11C 29/50 (2006.01); G11C 11/409 (2006.01); G11C 11/4063 (2006.01);
U.S. Cl.
CPC ...
G11C 29/025 (2013.01); G11C 11/409 (2013.01); G11C 11/4076 (2013.01); G11C 29/028 (2013.01); G11C 29/50008 (2013.01); G11C 29/50012 (2013.01); G11C 11/4063 (2013.01);
Abstract

A memory test method is provided that includes the steps outlined below. The memory controller performs data-writing and data-reading on a memory module. When a quantity of read data is incorrect, a data-strobe enable signal is calibrated to perform data reading. When there is one of less than one piece of negative edge data reading content, a sampling unit is triggered. When the quantity of read data increases, the condition that the data-strobe signal is not received is determined. When the quantity does not increase, the memory controller is inspected. When there is more than one piece of read data, the burst mode setting of the memory module is inspected. When the quantity is correct and the content is not correct, a transmission circuit setting and the sampling unit are inspected. When the quantity and the content are correct, the test flow is terminated.


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