System, apparatus and method for synchronizing multiple virtual link states over a package interconnect

In one embodiment, an apparatus includes an arbitration circuit with virtual link state machines to virtualize link states associated with multiple communication protocol stacks. The apparatus further includes a physical circuit coupled to the arbitration circuit and to interface with a physical lin...

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Bibliographische Detailangaben
Hauptverfasser: Lim, Su Wei, Hor, Joon Teik, Song, Ting Lok, Wagh, Mahesh
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:In one embodiment, an apparatus includes an arbitration circuit with virtual link state machines to virtualize link states associated with multiple communication protocol stacks. The apparatus further includes a physical circuit coupled to the arbitration circuit and to interface with a physical link, where the physical circuit, in response to a retraining of the physical link, is to cause a plurality of the virtual link state machines to synchronize with corresponding virtual link state machines associated with a second side of the physical link, and where at least one of the communication protocol stacks is to remain in a low power state during the retraining and the synchronization. Other embodiments are described and claimed.