Bus isolation apparatus and method
OwnerBrad Underwood, Kevin Egan +1inventors
InventorsBrad Underwood, Kevin Egan, Mark Shaw
Life of this patent
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Abstract
A system includes a bus isolation component having plural ports and enable inputs to enable respective ports, and bus devices connected to respective ports. Each bus device has logic to provide an enable signal to a respective enable input of the bus isolation component. The port of the bus isolation component connected to a respective bus device is disabled until the logic in the respective bus device activates the enable signal to the respective enable input of the bus isolation component.
Claims31
An apparatus comprising:
- a bus isolation component having a plurality of ports and a plurality of enable inputs to enable the respective ports;
- and
- a plurality of bus devices connected to the respective ports, each of the bus devices having logic to provide one of plural enable signals to a respective one of the enable inputs of the bus isolation component,
- wherein one of the ports of the bus isolation component connected to one of the respective bus devices is disabled until the logic in the respective one of the bus devices activates the enable signal to the respective one of the enable inputs of the bus isolation component.
A method of isolating bus devices connected to a bus structure, comprising:
- connecting the bus devices to ports of a bus isolation component, the bus isolation component further having enable inputs to enable the respective ports;
- each of the bus devices providing a respective one of plural enable signals to a respective one of the enable inputs of the bus isolation component;
- and
- each of the bus devices maintaining the respective one of plural enable signals to the respective one of the enable inputs of the bus isolation component inactive during system initialization to disable the respective one of the ports of the bus isolation component.
A system, comprising:
- management modules to manage components of the system;
- and
- a bus structure comprising an isolation component, the management modules to communicate over the bus structure, and the isolation component having a plurality of ports,
- each of the management modules connected to a respective one of the ports of the isolation component, and
- each of the management modules having logic to provide one of plural enable signals that when activated enables a respective one of the ports.
An apparatus comprising:
- a plurality of bus devices;
- and
- means for isolating the plurality of bus devices, the means for isolating having a plurality of ports and a plurality of enable inputs to enable the respective ports,
- wherein the plurality of bus devices are connected to the respective ports, each of the bus devices having means for providing one of plural enable signals to a respective one of the enable inputs of the means for isolating,
- wherein one of the ports of the means for isolating is disabled until the means for providing one of plural enable signals in the respective one of the bus devices activates the enable signal to the respective one of the enable inputs of the means for isolating.
Dependencies are inferred from the claim text.