High speed multiple ported bus interface control
AssigneeHewlett-Packard Development Company, L.P.
InventorsAnthony Joseph Benson, Thin Nguyen
Life of this patent
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Abstract
A bus controller is capable of controlling a dual ported bus interface in combination with a peer interface. The bus controller comprises a state machine capable of executing in the dual ported bus interface. The dual ported bus interface has first and second front end ports for connection to hosts, and is capable of insertion into one of first and second slots for connection to one or more buses on a backplane. The state machine determines bus interface state based on information from the peer interface received across the backplane, and status of the first and second front end ports.
Claims39
A bus controller capable of controlling a dual ported bus interface in combination with a peer interface, the bus controller comprising:
- a state machine capable of executing in the dual ported bus interface, the dual ported bus interface having first and second front end ports for connection to hosts, and being capable of insertion into one of first and second slots for connection to one or more buses on a backplane,
- the state machine determining bus interface state based on information from the peer interface received across the backplane, and status of the first and second front end ports.
A dual ported bus interface capable of operating in concert with a peer interface, the bus interface being capable of insertion into one of first and second slots for connection to one or more buses, the bus controller comprising:
- first and second front end ports capable of connecting to hosts;
- first and second isolator/expanders respectively coupled to the first and second front end ports;
- a controller coupled to the first and second isolator/expanders;
- and
- a state machine coupled to the controller and capable of operating in a plurality of states, the state machine using front end connection status in combination with signals from the peer interface to determine state.
A method of controlling a bus interface comprising:
- controlling a dual ported bus interface having first and second front end ports in conjunction with a peer interface, the bus interface being capable of insertion into one of first and second slots;
- and
- determining bus interface state based on information from the peer interface received across the backplane and status of the first and second front end ports.
Dependencies are inferred from the claim text.