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. 29, 2011
Filed:
Dec. 15, 2003
Roger May, Bicester, GB;
Roger May, Bicester, GB;
Altera Corporation, San Jose, CA (US);
Abstract
A SDRAM controller prioritizes memory access requests to maximize efficient use of the bandwidth of the memory data bus, and also gives different priorities to access requests received on its different inputs. The SDRAM controller has multiple inputs, at least one of which allows connections to multiple bus master devices. The SDRAM controller forms a queue of bus access requests, based amongst other things on a relative priority given to the input on which a request is received. When a request is received on an input which allows connections to multiple bus master devices, the SDRAM controller forms the queue of bus access requests, based amongst other things on a relative priority given to the bus master device which made the request.