公开(公告)号：US11388270B1

公开(公告)日：2022-07-12

申请号：US16401099

申请日：2019-05-01

Applicant: Xilinx, Inc.

Inventor： Veerender Kumar Soma ,  Ajay V. Sharma ,  Sunil K. Pattanaik

IPC: H04L12/26 ,  H04L69/24 ,  H04L69/28 ,  H04L69/18

Abstract: A physical (PHY) circuit can include a Physical Medium Dependent (PMD) circuit, the PMD circuit having a receiver and a transmitter, a Physical Medium Attachment (PMA) circuit coupled to the PMD circuit, and a plurality of Physical Coding Sublayer (PCS) circuits coupled to the PMA circuit, wherein each PCS circuit is configured to implement a different communication protocol. The PHY circuit can also include an auto-negotiation circuit coupled to the PMD circuit, wherein the auto-negotiation circuit is configured to determine a selected communication protocol compatible with a link partner device from a plurality of communication protocols by configuring the receiver to operate at different data rates over time, the different data rates corresponding to different ones of the plurality of communication protocols.