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:
Feb. 02, 2021
Filed:
Mar. 01, 2019
Arm Limited, Cambridge, GB;
Joseph Samuel Herd, Stevenage, GB;
Kar-Lik Kasim Wong, Wokingham, GB;
Christopher Vincent Severino, Haverhill, GB;
Arm Limited, Cambridge, GB;
Abstract
An apparatus has a control domain comprising functional circuitry to perform logical operations when in an operational state. The functional circuitry comprises at least one output and a state of the output depends on the logical operations. Domain control circuitry controls the control domain to put the functional circuitry in one of the operational state and a non-operational state. Isolation circuitry isolates the functional circuitry within the apparatus by holding the state of the output at a predetermined value when the domain control circuitry puts the functional circuitry in the non-operational state. Self-test control circuitry causes the domain control circuitry to control the control domain to put the functional circuitry in the non-operational state and to cause a self-test procedure to be carried out with respect to the functional circuitry.