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. 10, 2022

Filed:

Sep. 22, 2020
Applicant:

Realtek Semiconductor Corp., HsinChu, TW;

Inventor:

Yuefeng Chen, Suzhou, CN;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/3185 (2006.01); G01R 31/3177 (2006.01); G01R 31/317 (2006.01);
U.S. Cl.
CPC ...
G01R 31/318597 (2013.01); G01R 31/3172 (2013.01); G01R 31/3177 (2013.01); G01R 31/318555 (2013.01); G01R 31/318572 (2013.01);
Abstract

A JTAG TAP apparatus coupled between a host and an interface circuit, which is coupled between a memory and the JTAG TAP apparatus, includes first pin, second pin, first data register, and second data register. The first data register stores data shifted in by the host via the first pin, the shifted in data is stored into a specific address of the memory via the interface circuit. The second data register stores read back data from the specific address of the memory via the interface circuit and outputs the read back data to the host via the second pin to make the host compare the shifted in data with the read back data to perform comparison test.


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