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:
Mar. 28, 2023
Filed:
Jul. 30, 2020
Arm Limited, Cambridge, GB;
Lorenzo Di Gregorio, Munich, DE;
Andrew Brookfield Swaine, Sheffield, GB;
Arm Limited, Cambridge, GB;
Abstract
An apparatus is described that has processing circuitry for performing operations, and a communication path employed by the processing circuitry to access a first memory. Switch circuitry, when activated, is connected to the communication path. The processing circuitry issues access commands specifying addresses to be accessed, where each address is mapped to location in a memory system in accordance with a system address map. The memory system comprises at least the first memory and a second memory. When in a particular mode, the processing circuitry performs operations that require access to only a subset of the locations provided in the first memory. The switch circuitry is arranged, whilst the processing circuitry is in the particular mode, to be activated in order to intercept the access commands issued over the communication path that specify addresses mapped by the system address map to locations within the subset of locations. Those intercepted access commands are redirected to locations within the second memory that are otherwise unused whilst the processing circuitry is in the particular mode. This can provide significant power consumption benefits.