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:
Apr. 22, 1997
Filed:
Dec. 23, 1994
Applicant:
Inventor:
Kaushik L Popat, Pleasanton, CA (US);
Assignee:
Cirrus Logic, Inc., Fremont, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
395728 ; 395729 ; 395731 ; 395732 ; 395291 ; 395292 ; 395293 ; 395296 ; 395297 ; 395860 ; 395861 ; 395865 ; 395280 ; 395287 ;
Abstract
A method and apparatus for arbitration among users for a resource has a single shared user request line over which each of the users asserts request signals for use of the resource. Dynamic priority assignment is provided, in which the sequence of users is changed as a function of the last user to use the resource. A time multiplexed format for arbitration is followed, with each user keeping track of which user's turn it is to request use of the resource. This prevents starvation of an individual user and allows great flexibility in assigning priority to the users, while reducing pin counts and signal traces.