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. 25, 2014
Filed:
Jan. 20, 2009
Sajish Sajayan, C.V. Raman Nagar, IN;
Alok Anand, Bangalore, IN;
Ashish Rai Shrivastava, Sugar Land, TX (US);
Joseph R. Zbiciak, Arlington, TX (US);
Sajish Sajayan, C.V. Raman Nagar, IN;
Alok Anand, Bangalore, IN;
Ashish Rai Shrivastava, Sugar Land, TX (US);
Joseph R. Zbiciak, Arlington, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A real request from a CPU to the same memory bank as a prior prefetch request is transmitted to the per-memory bank logic along with a kill signal to terminate the prefetch request. This avoids waiting for a prefetch request to complete before sending the real request to the same memory bank. The kill signal gates off any acknowledgement of completion of the prefetch request. This invention reduces the latency for completion of a high priority real request when a low priority speculative request to a different address in the same memory bank has already been dispatched.