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:
May. 25, 2021
Filed:
Mar. 30, 2020
Apple Inc., Cupertino, CA (US);
Harshavardhan Kaushikkar, San Jose, CA (US);
Christopher D. Shuler, Davis, CA (US);
Srinivasa Rangan Sridharan, San Jose, CA (US);
Yu Zhang, San Jose, CA (US);
Kaushik Kannan, Mountain View, CA (US);
Deniz Balkan, Santa Clara, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
In one embodiment, a cache coherent system includes one or more agents (e.g. coherent agents) that may cache data used by the system. The system may include a point of coherency in a memory controller in the system, and thus the agents may transmit read requests to the memory controller to coherently read data. The point of coherency may determine if the data is cached in another agent, and may transmit a copy back request to the other agent if the other agent has modified the data. The system may include an interconnect between the agents and the memory controller. At a point on the interconnect at which traffic from the agents converges, a copy back response may be converted to a fill for the requesting agent.