Arria® V Device Handbook: Volume 2: Transceivers

ID 683573
Date 5/29/2020
Document Table of Contents Auto Speed Negotiation Block

The Auto Speed Negotiation block controls the operating speed of the HSSI when operating under PIPE 3.0 modes. By monitoring the rate control signal from the PhyMac, this block will change the HSSI from PCIe Gen 1 operation mode, to Gen 2 operation mode, or from PCIe Gen 1 operation mode to Gen 2 operation mode to Gen 3 operation mode, or vice versa, with all the appropriate settings.