Patent ID: 9160482
Filing Date: 2015-10-13
Classification: H04L

Abstract:
1. A method for re-training a physical layer transceiver (PHY) coupled to a communications link, comprising: identifying a re-training condition including examining filter coefficients of a decision feedback equalizer (DFE) of the PHY to determine whether an electromagnetic interference (EMI) event caused the re-training condition; determining responsive to the re-training condition a PHY state transition of the PHY from a user data sending state to a PHY training state, wherein determining the PHY state transition comprises choosing the PHY training state from a plurality of PHY training states of a PHY training sequence of PHY based on the determination of whether an EMI event caused the re-training condition; transitioning the PHY from the user data sending state to the PHY training state; and returning the PHY to the user data sending state when a receiver module of the PHY is returned to a normal condition or when a pre-determined timer expires.