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:
May. 06, 2019
Qualcomm Incorporated, San Diego, CA (US);
Nikhil Narendradev Sharma, Apex, NC (US);
Eric Francis Robinson, Raleigh, NC (US);
Garrett Michael Drapala, Cary, NC (US);
Perry Willmann Remaklus, Jr., Raleigh, NC (US);
Joseph Gerald McDonald, Raleigh, NC (US);
Thomas Philip Speier, Wake Forest, NC (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
Selective honoring of speculative memory-prefetch requests based on bandwidth constraint of a memory access path component(s) in a processor-based system. To reduce memory access latency, a CPU includes a request size in a memory read request of requested data to be read from memory and a request mode of the requested data as required or preferred. A memory access path component includes a memory read honor circuit configured to receive the memory read request and consult the request size and request mode of requested data in the memory read request. If the selective prefetch data honor circuit determines that bandwidth of the memory system is less than a defined bandwidth constraint threshold, then the memory read request is forwarded to be fulfilled, otherwise, the memory read request is downgraded to only include any requested required data.