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US 9,875,210 B2Granted
Method and apparatus of USB 3.1 retimer presence detect and index
AssigneeIntel Corporation
InventorsHuimin Chen, Howard L. Heck
Life of this patent
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Abstract
An apparatus for retimer presence detection is described herein. The apparatus includes at least one retimer, wherein an algorithm is to enable the at least one retimer to announce its presence by asserting a bit of a presence message during link initialization. The at least one retimer can declare an index and is accessible via the index.
Claims31
An apparatus for retimer presence detection, comprising:
- at least one retimer;
- a control associated with the at least one retimer to assert at least one bit in a reserved field of a presence message during link initialization to announce the at least one retimer's presence and the at least one retimer to shift any bits asserted by one or more preceding retimers, wherein a final presence message is to specify each retimer on a link and each retimer's relative index.
A system for retimer presence detection and indexing, comprising:
- a first port;
- a second port;
- a plurality of retimers, wherein a link including a retimer of the plurality of retimers is to connect the first port and the second port and logic is to enable the plurality of retimers to announce their presence by asserting a bit of a presence message during link initialization and to declare an index based on the presence message, wherein a final presence message is to specify each retimer on a link and each retimer's relative index.
A tangible, non-transitory, computer-readable medium comprising code to direct a processor to:
- initialize a link between a first port and a second port, wherein a plurality of retimers are located between the first port and the second port;
- send a presence message between the first port and the second port, wherein an logic is to enable the plurality of retimers to announce their presence by asserting a bit of a presence message during link initialization and to declare an index via the presence message, wherein a final presence message is to specify each retimer on a link and each retimer's relative index on the link.
An apparatus comprising:
- a retimer of a plurality of retimers for a high speed serial interconnect, the retimer including but not limited to:
- a receiver to receive a message that is to include a particular field;
- a control to update the particular field with a retimer value to announce a presence of the retimer inband;
- and
- a transmitter to transmit a message to include the particular field, wherein a final message is to specify each retimer on a link and each retimer's relative index.
2 more elements
Dependencies are inferred from the claim text.