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:
Sep. 10, 2024
Filed:
Jul. 29, 2022
Texas Instruments Incorporated, Dallas, TX (US);
Devanathan Varadarajan, Allen, TX (US);
Benjamin Niewenhuis, Richardson, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An example device includes built in test observation controller circuitry configured to: obtain a test; send first instructions to the processor to begin to execute the test by modifying values stored in a plurality of memory circuits; send second instructions to the processor to stop execution of the test at a first simulation time, wherein one or more memory values that are unobservable during a second simulation time of the test execution are observable during the first simulation time; and enhanced chip access trace scan circuitry configured to select a subset of the values from the plurality of memory circuits while the test is stopped; and signature circuitry configured to: determine a logic signature based on the subset of the values; and provide the logic signature for comparison to an expected signature, wherein a difference between the logic signature and the expected signature corresponds to a fault in the processor.