Arria® 10 Transceiver PHY User Guide

ID 683617
Date 4/01/2024
Public
Document Table of Contents

5.4.3.1. Auto Speed Negotiation

Auto speed negotiation controls the operating speed of the transceiver when operating under PIPE 3.0 modes. By monitoring the pipe_rate signal from the PHY-MAC, this feature changes the transceiver from PIPE Gen1 operation mode to Gen2 operation mode, or from PIPE Gen1 operation mode to Gen2 operation mode to Gen3 operation mode, or vice versa. The PIPE interface clock rate is adjusted to match the data throughput.