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:
Apr. 12, 2022
Filed:
Oct. 02, 2020
Synopsys, Inc., Mountain View, CA (US);
Adam Cron, Hilton Head Island, SC (US);
Synopsys, Inc., Mountain View, CA (US);
Abstract
A save and restore (SR) register system is disclosed. Some embodiments include a first memory state element (MSE), a second MSE, and a control circuit. The first MSE is configured to: clock in a first data value during a normal mode and hold the first data value during a first testing mode; and clock in a first test sequence during a second testing mode. The second MSE is configured to: clock in the first data value during the normal mode; and clock in a second test sequence during the first testing mode. The control circuit configured to: restore the second MSE to the first data value based on an output port of the first MSE after the second MSE clocks in the second test sequence; and restore the first MSE based on an output port of the second MSE after the first MSE clocks in the first test sequence.