F-tile Architecture and PMA and FEC Direct PHY IP User Guide

ID 683872
Date 3/28/2022
Public

A newer version of this document is available. Customers should click here to go to the newest version.

Document Table of Contents

3.14.1.1. Enabling Loopback

Use the following register settings to enable FHT PMA loopback modes.
Table 85.   Loopback Mode Register Settings
Loopback Mode Register Description
Serial internal loopback 0x45800[14] Set 1'b1 to enable serial internal loopback. Set 1'b0 to disable serial internal loopback.
Parallel TX to RX loopback 0x45800[0] Set 1'b1 to enable parallel TX to RX loopback. Set 1'b0 to disable parallel TX to RX loopback.
Reverse parallel RX to TX loopback 0x45804[19] Set 1'b1 to enable reverse parallel RX to TX loopback. Set 1'b0 to disable reverse parallel RX to TX loopback.