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:
Jan. 25, 2011
Filed:
Aug. 13, 2007
William A. Hughes, San Jose, CA (US);
Vydhyanathan Kalyanasundharam, San Jose, CA (US);
Philip E. Madrid, Austin, TX (US);
Roger Isaac, Santa Clara, CA (US);
William A. Hughes, San Jose, CA (US);
Vydhyanathan Kalyanasundharam, San Jose, CA (US);
Philip E. Madrid, Austin, TX (US);
Roger Isaac, Santa Clara, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A system includes a processor coupled to a memory through a memory controller. The memory controller includes first and second queues. The memory controller receives memory requests from the processor, assigns a priority to each request, stores each request in the first queue, and schedules processing of the requests based on their priorities. The memory controller changes the priority of a request in the first queue in response to a trigger, sends a next scheduled request from the first queue to the second queue in response to detecting the next scheduled request has the highest priority of any request in the first queue, and sends requests from the second queue to the memory. The memory controller changes the priority of different types of requests in response to different types of triggers. The memory controller maintains a copy of each request sent to the second queue in the first queue.