GTS Ethernet Hard IP User Guide: Agilex™ 3 FPGAs and SoCs

ID 848477
Date 7/07/2025
Public
Document Table of Contents

1.5.4. Round-Trip Latency

The Round Trip is measured from the entry point of the client TX interface through the MAC, PCS, and PMA looped back externally to the RX PMA, PCS, and MAC, which terminates at the RX MAC client interface.

The following table includes the round-trip latency numbers for specific variants. The latency numbers for the  GTS Ethernet Hard IP   are obtained using the  Quartus® Prime Pro Edition  software to compile the variant of the IP:

Table 11.  Round-trip Latency for Agilex™ 3 Devices
IP Variant Data Rate PMA Type Ethernet Mode FEC Mode Enable Asynchronous Adaptor Clocks Round Trip (TX+RX) of MAC+PHY
Simulation Measurement (ps)
MAC Avalon® ST 10GE GTS 10GE-1 None Off 378548
On 486398
IEEE 802.3 BASE-R Firecode (CL 74) Off 927999
On  927999
MII PCS Only 10G GTS 10G-1 None N/A 266840
IEEE 802.3 BASE-R Firecode (CL 74) N/A 719908
PCS66 FlexE 10G GTS 10G-1 None N/A 254460
IEEE 802.3 BASE-R Firecode (CL 74) N/A 688872
MAC Avalon® ST with PTP 10G GTS 10G-1 None Off 639220
IEEE 802.3 BASE-R Firecode (CL 74) Off 1092248