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:
Dec. 14, 2021
Filed:
Oct. 19, 2016
Arm Limited, Cambridge, GB;
Alex James Waugh, Cambridge, GB;
Dimitrios Kaseridis, Austin, TX (US);
Klas Magnus Bruce, Leander, TX (US);
Michael Filippo, Driftwood, TX (US);
Joseph Michael Pusdesris, Austin, TX (US);
Jamshed Jalal, Austin, TX (US);
ARM LIMITED, Cambridge, GB;
Abstract
A data processing system () incorporates a first exclusive cache memory () and a second exclusive cache memory (). A snoop filter () located together with the second exclusive cache memory on one side of the communication interface () serves to track entries within the first exclusive cache memory. The snoop filter includes retention data storage circuitry to store retention data for controlling retention of cache entries within the second exclusive cache memory. Retention data transfer circuitry () serves to transfer the retention data to and from the retention data storage circuitry within the snoop filter and the second cache memory as the cache entries concerned are transferred between the second exclusive cache memory and the first exclusive cache memory.