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. 04, 1999
Filed:
Apr. 28, 1995
Applicant:
Inventor:
Farid A Yazdy, Belmont, CA (US);
Assignee:
Apple Computer, Inc., Cupertino, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395293 ; 395729 ;
Abstract
An arbiter employs both an address bus arbiter and a data bus arbiter for supporting pipelined, split bus transactions. The address arbiter may be implemented using a state machine. A first through third states of the state machine grant the address bus to a respective first through third bus masters, each having a different priority associated therewith. Idle states are interposed between states. The data bus arbiter may be implemented using a circular FIFO having a plurality of pointers to keep track of present and future bus masters using the data bus.