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专利名称：Method and apparatus for performing bus
arbitration in a data processing system
发明人：William C. Moyer,James B. Gullette,Michael J.
Garcia
申请号：US08/218146申请日：19940325公开号：US05416910A公开日：19950516
摘要：A data processing system (10) and method for performing bus arbitrationprotocol using an arbiter (14). The data processing system (10) has multiple bus masters(12, 16) each of which is coupled to multiple shared buses (20, 22, 24, 28). The arbiter (14)detects a bus request from a requesting bus master, and responds with a bus grant tonotify the requesting bus master that the arbiter has selected the requesting bus masterto be a bus-master elect for a shared bus (20). The requesting bus master monitors ashared signal line to determine when a current bus master has released ownership of theshared bus (20). When the requesting bus master assumes ownership of the shared bus itdeactivates the bus request signal for a dock period after commencement of the bustransaction, which allows the arbiter (14) to select a next bus master-elect, therebypreventing any bus master from monopolizing the shared bus (20).
申请人：MOTOROLA, INC.
代理人：Charlotte B. Whitaker
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