1G/2.5G/5G/10G Multirate Ethernet PHY IP User Guide: Agilex™ 3 and Agilex™ 5 FPGAs and SoCs

ID 813667
Date 10/24/2025
Public
Document Table of Contents

7.2.2. External Loopback

The output TX PMA data is transmitted via the transceiver TX pin and the RX PMA receives input data from the transceiver RX pin.

Figure 23. External Serial Loopback

The design example hardware TCL script supports both internal and external loopback mode. By default, the design example is configured for external loopback. Follow the steps provided in the Low Latency 10G Ethernet MAC Design Example User Guide.