Low Latency 40-Gbps Ethernet IP Core User Guide

ID 683745
Date 3/08/2021
Document Table of Contents Conditions Triggering XON Frame Transmission

The TX MAC transmits XON frames when one of the following conditions occurs:

  • Client requests XON transmission—A client can explicitly request that XON frames be sent using the pause control interface signal. When pause_insert_tx is de-asserted, an XON frame is sent to the Ethernet network when the current frame transmission completes.
  • Host (software) requests XON transmission—Resetting the pause request register triggers a request that an XON frame be sent.