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. 20, 2021
Filed:
Dec. 04, 2019
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
Younes Djadi, Austin, TX (US);
Cirrus Logic, Inc., Austin, TX (US);
Abstract
A system may include a switchable power domain configured to selectively be powered on and powered off during operation of the system and an always-on power domain configured to remain powered on during operation of the system, the always-on power domain including a power management unit. The power management unit may be configured to, in response to a shut down condition for powering down the switchable power domain, determine a state of a bus transaction on a communication bus between the switchable power domain and the always-on power domain and control one or more control signals for controlling the communication bus in order to manipulate completion of the bus transaction to prevent at least one of corruption of data of the bus transaction and a system freeze associated with the bus transaction.