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:
Nov. 04, 2003
Filed:
Aug. 02, 2002
Paul S. Lazar, Santa Clara, CA (US);
Seung Cheol Oh, San Jose, CA (US);
Nanoamp Solutions, Inc, San Jose, CA (US);
Abstract
A method and queuing circuit are provided for storing asynchronous external RAS access requests and for executing corresponding RAS cycles. When no current external access RAS cycle is currently underway a first request latch or similar storage element is set in response to an initial access request. When access to the memory begins in a RAS cycle, this first request latch is reset. When a RAS cycle is currently underway, a second request-queuing latch is set in response to a new, second access request that occurs. Whenever a RAS cycle is completed, if the second queuing latch is set, a new RAS cycle is initiated and both the first and the second latches are reset. Any subsequent new access request may then be queued if the subsequent new access request arrives prior to completion of the current second access cycle.