Method and apparatus for efficient fast retraining of ethernet transceivers
AssigneeMarvell Asia Pte Ltd
InventorsSeid Alireza Razavi Majomard, Hossein Sedarat, Dragan Labalo
Life of this patent
Estimating the term…
Abstract
A method of operation for an Ethernet transceiver is disclosed. The method includes receiving, with receiver circuitry from a link partner transceiver, a data signal carrying data. A threshold change in signal quality of the data signal is detected. A fast retrain operation is initiated in response to the threshold change in signal quality. The fast retrain operation includes adaptively self-updating the receiver circuitry based on filter information generated by the receiver circuitry independently of signals received from the link partner transceiver.
Claims20
A method of operation for an Ethernet transceiver, the method comprising:
- receiving, with receiver circuitry from a link partner transceiver, a data signal carrying data;
- detecting a threshold change in signal quality of the data signal;
- initiating a fast retrain operation in response to the threshold change in signal quality, the fast retrain operation including
- adaptively self-updating the receiver circuitry based on filter information generated by the receiver circuitry independently of signals received from the link partner transceiver, the filter information being determined as a function of predicted correlated noise.
An integrated circuit (IC) Ethernet transceiver chip comprising:
- receiver circuitry to receive, from a link partner transceiver, a data signal carrying data, the receiver circuitry including correlated noise canceller circuitry;
- and
- training logic to control a fast retrain operation in response to a threshold change in signal quality, the training logic including
- circuitry to adaptively self-update the receiver circuitry based on filter information generated by the correlated noise canceller circuitry independently of signals received from the link partner transceiver, the filter information being determined as a function of predicted correlated noise.
A method of operation for an Ethernet transceiver, the Ethernet transceiver including receiver circuitry to receive, from a link partner transceiver, a data signal carrying data, the method comprising:
- for a first mode of operation, performing a training sequence by
- adaptively self-updating the receiver circuitry based on filter information generated by the receiver circuitry independently of signals received from the link partner transceiver, the filter information being determined as a function of predicted correlated noise;
- and
- for a second mode of operation, performing the training sequence by
- updating the receiver circuitry based on filter information generated by the receiver circuitry dependent on signals received from the link partner transceiver.
Dependencies are inferred from the claim text.