System and method for arbitrating access between common...

Details System and method for arbitrating access between common... System and method for arbitrating access between common...

2005-11-22

2005-11-22

Ray, Gopal C. (Department: 2111)

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus access regulation

C710S305000

Reexamination Certificate

active

06968406

ABSTRACT:
A system and method of arbitrating access on a bus includes a bus, a bus expander, a boot module, and a management module. The bus expander includes an access engine, a first bus interface, a second bus interface, and a plurality of general purpose input/output ports. The boot module couples with a first segment of the bus and communicatively couples to the bus expander via the first bus interface. The management module couples with a second bus segment of the bus and communicatively couples with the bus expander via the second bus interface. The boot module and the management module make one or more access requests for one or more devices interfaced with the general purpose input/output ports of the bus expander thereby allowing the modules to communicate with the devices. The access engine arbitrates the access requests made by the modules to prevent bus hang conditions.

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“A VLSI processor-switch for a dual IEEE-796 bus with shared and dual-port memories” by Opsommer, J. and D'Hollander, E.H (abstract only) Publication Date: May 8-12, 1989.

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