SERDES FAST RETRAIN METHOD UPON EXITING POWER SAVING MODE

摘要

Systems and methods for reducing power consumption of systems using serialized data transmission. In a multi-node system, the reiterative steps for the setup of the lanes within links between the nodes produces both a time invariant set of parameters associated with the channel properties of the lanes and a time variant set of parameters associated with receiver clock alignment. The time invariant set is stored in persistent storage. Links may be turned on and turned off. When a link is turned on again, the stored time invariant set may be used as initial values to reconfigure both the time invariant and the time variant sets, thereby greatly reducing the delay to begin using the link again. The reduced delay may significantly speed up the wakening process for the links, thereby encouraging the use of low-power techniques that include tuning off lanes.

主权项

1. A computing system comprising:
control logic; and a plurality of nodes; wherein each of a first node and a second node of the plurality of nodes is configured to:
determine a time invariant set of parameters associated with channel properties of a plurality of lanes between the first node and the to second node;determine a time variant set of parameters;in response to receiving an indication from the control logic to disable the plurality of lanes, store the time invariant set of parameters; andin response to receiving an indication from the control logic to re-initialize the plurality of lanes, use the stored time invariant set of parameters as initial values to re-determine each of the time invariant set and the time variant set of parameters.