Critical Issue
If, in the ALTGX MegaWizard Plug-In Manager, you set Which protocol will you be using to Deterministic Latency on the General tab of the Parameter Settings page, the MegaWizard Plug-In Manager does not automatically update the voltage output differential (VOD) settings on the Tx Analog tab.
To update the two VOD settings (What is the voltage output differential (VOD) control setting and What is the Pre-emphasis setting (% of VOD)), on the Tx Analog tab, select 150 Ohms in the Select the Transmitter termination resistance box.