Stratix V Device Handbook: Volume 2: Transceivers

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ID 683779
Date 11/23/2021
Public
Document Table of Contents

1.5.3.1. Auto Speed Negotiation

Auto Speed Negotiation controls the operating speed of the transceiver when operating under PIPE 3.0 modes. By monitoring the rate control signal from the physical MAC (PHY MAC) layer, this feature changes the transceiver from PCIe Gen1 operation mode to Gen2 operation mode, or from PCIe Gen1 operation mode to Gen2 operation mode to Gen3 operation mode, or vice versa, with all the appropriate settings.

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