Arria® 10 Transceiver PHY User Guide

ID 683617
Date 4/01/2024
Document Table of Contents 8B/10B TX Disparity Control

The Disparity Control feature controls the running disparity of the output from the 8B/10B Decoder.

To enable TX Disparity Control, select the Enable TX 8B/10B Disparity Control option. The following ports are added:
  • tx_forcedisp—a control signal that indicates whether a disparity value has to be forced or not
  • tx_dispval—a signal that indicates the value of the running disparity that is being forced
When the number of data channels is more than 1, tx_forcedisp and