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PCI express enhancements and extensions

  • US 8,555,101 B2
  • Filed: 03/11/2011
  • Issued: 10/08/2013
  • Est. Priority Date: 11/02/2006
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • an input/output (I/O) device adapted to implement a layered protocol stack for communication on a serial interconnect, the I/O device including, receiving logic adapted to receive a power state request referencing a power state;

    storage adapted to hold a referencing to the power state associated with a plurality of power sub-states; and

    configuration logic adapted to select a power sub-state of the plurality of power sub-states based at least in part on an algorithm relating power consumption associated with the I/O device to a performance metric associated with the I/O device and to configure the I/O device according to specifications of the power sub-state in response to selecting the power sub-state.

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