Physical layer device auto-adjustment based on power over Ethernet magnetic heating

摘要

Physical layer device auto-adjustment based on power over Ethernet (PoE) magnetic heating. In one embodiment, information generated by a PoE module that is indicative of the PoE operation over the network cable (e.g., level of current, heating, etc.) is made available to the physical layer device (PHY). This information enables the PHY to infer a change in the level of inductance on the line. In response, the PHY can then adjust a characteristic of transmission by the PHY.

主权项

1. A method, comprising:
receiving, in a physical layer device, information that is indicative of a level of heating of a data transformer that couples said physical layer device to a twisted wire pair, wherein a center tap of said data transformer is coupled to a power over Ethernet module that facilitates a delivery of power over said twisted wire pair; and adjusting a characteristic of transmission by said physical layer device in response to said information that is indicative of a level of heating of said data transformer.