4.1.2. Ethernet Multirate Hardware Design Example
Figure 21. Ethernet Multirate Hardware Design Example Block Diagram for 25GE-1 Base Variant
Figure 22. Ethernet Multirate Hardware Design Example Block Diagram for 25GE-1 with PTP Base Variant
Figure 23. Ethernet Multirate Hardware Design Example Block Diagram for 100GE-4 Base Variant
Figure 24. Ethernet Multirate Hardware Design Example Block Diagram for 100GE-4 with PTP Base Variant
Figure 25. Ethernet Multirate Hardware Design Example Block Diagram for 400GE-8 Base Variant
Figure 26. Ethernet Multirate Hardware Design Example Block Diagram for 400GE-8 with PTP Base Variant
Figure 27. Ethernet Multirate Hardware Design Example Block Diagram for 400GE-4 FHT Base Variant
In the hardware design example, the reset, status, and control signals from packet clients, F-Tile Ethernet Multirate Intel® FPGA IP, and F-Tile Dynamic Reconfiguration Suite Intel® FPGA IP in the example design are connected to In-System Sources and Probes IPs (ISSP). The hardware test scripts open service to the ISSP to read and drive the values. A JTAG host is instantiated to access the Avalon® memory-mapped interfaces.
The hardware design example executes the dynamic reconfiguration transition process, check the DUT IP status, clear the MAC statistics before sending 16 packets, and lastly display the MAC statistics.
The table below summarizes the supported modes for F-Tile Ethernet Dynamic Reconfiguration Hardware Example Design for PTP/Non PTP Variants.
| Base Variant (Startup IP/Mode) | Hardware Support | Target Variants | PTP mode |
|---|---|---|---|
| 25G-1 | Yes | 25G 10G |
- |
| 25G-1 with PTP | Yes | 25G PTP 10G PTP |
Advanced |
| 100G-4 | Yes | 100G-4 with RS-FEC 100G-4 100G-2 RS-FEC 2×50G-1 with RS-FEC 4×25G-1 with RS-FEC 4×25G-1 |
- |
| 100G-4 with PTP | Yes | 100G-4 with RS-FEC and PTP 100G-4 with PTP 100G-2 with RS-FEC and PTP 2×50G-1 with RS-FEC and PTP 4×25G-1 with RS-FEC and PTP 4×25G-1 with PTP |
Basic |
| 400G-8 | Yes | 400G-8 with RS-FEC 2x200G-4 with RS-FEC 4x100G-2 with RS-FEC |
- |
| 400G-8 with PTP | Yes | 400G-8 with RS-FEC and PTP 2x200G-4 with RS-FEC and PTP 4x100G-2 RS-FEC with PTP |
Advanced |
| FHT 400G-4 | Yes | FHT 400G-4 with RS-FEC FHT 1x200G-4 with RS-FEC FHT 2x200G-2 with RS-FEC FHT 2x100G-2 with RS-FEC FHT 4x100G-1 RS-FEC |
- |
Hardware Flow for Design Example:
The hardware test design contains a hwtest subdirectory that contains .tcl scripts for dynamic reconfiguration.
- For PTP enabled designs using Advance Accuracy Mode (i.e. 25GE-1 with RSFEC and PTP and 400G-8 with RSFEC and PTP), you must generate the routing delay information first before you run the main_script.tcl.
- For the steps required to generate this routing delay information, refer to Routing Delay Adjustment for Advanced Timestamp Accuracy Mode in F-tile Ethernet Intel FPGA Hard IP User Guide.
- Refer to steps 6b and 6c in the Hardware Design Example of F-tile Ethernet Intel FPGA Hard IP Design Example User Guide to add the external module and board trace value.
- For PTP enabled designs that target the Intel® Agilex™ 7 I-Series Transceiver-SoC Development Kit, the master TOD clock is sourced from U19, OUT1. You must program the OUT1 clock from the default of 166.6Mhz to the required 125Mhz frequency using the development kit's clock controller GUI. For designs which do not use PTP but target the Intel® Agilex™ 7 I-Series Transceiver-SoC Development kit, the default clock settings are sufficient and this step is not required.
- A successful run displays Test <ftile_eth_dr_test> Passed at System Console.
For more information to test the design example in hardware, refer to Testing the Hardware Design Example.