Dynamic adaptive clocking for non-common-clock interfaces
AssigneeIntel Corporation
InventorsAnoop Mukker, Eng Hun Ooi, Robert J. Royer, Jr., Brian R. McFarlane
Life of this patent
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Abstract
The present disclosure provides devices and techniques to dynamically change the operating frequency of an interface where components on the interface have non-common clocks. An interface component may be provided with a frequency negotiation component to negotiate a shift in an operating frequency with other component on an interface where the different components have non-common clocks.
Claims19
An apparatus comprising:
- a host interface to exchange signals with a component interface over a bus, the host interface to operate based on a first reference clock and the component interface to operate based on a second reference clock different that the first reference clock;
- and
- circuitry coupled to the host interface, the circuitry to:
- send a first control signal to the component interface, the first control signal comprising an indication to change an operating frequency of the component interface,
- receive, from the component interface, an indication that the component interface is ready to change the operating frequency of the component interface,
- activate a transient frequency compensation for the bus, and
- dynamically change an operating frequency of the host interface.
A computer-implemented method comprising:
- sending, from a host interface to a component interface via a bus, a first control signal to include an indication to change an operating frequency of the component interface, the host interface to operate based on a first reference clock and the component interface to operate based on a second reference clock different than the first reference clock;
- receiving, from the component interface, an indication that the component interface is ready to change the operating frequency of the component interface;
- activating a transient frequency compensation for the bus;
- and
- dynamically change an operating frequency of the host interface.
At least one machine-readable storage medium comprising instructions that when executed by processing circuitry of a host interface, cause the processing circuitry to:
- send, from the host interface to a component interface via a bus, a first control signal to include an indication to change an operating frequency of the component interface, the host interface to operate based on a first reference clock and the component interface to operate based on a second reference clock different than the first reference clock;
- receive, from the component interface, an indication that the component interface is ready to change the operating frequency of the component interface;
- activate a transient frequency compensation for the bus;
- and
- dynamically change an operating frequency of the host interface.
Dependencies are inferred from the claim text.