Low Latency 40-Gbps Ethernet Intel® FPGA IP User Guide: Stratix® 10
ID
683600
Date
5/31/2024
Public
1. About the Low Latency 40G Ethernet Core
2. Stratix® 10 Low Latency 40G Ethernet IP Core Parameters
3. Getting Started
4. Functional Description
5. Reset
6. Interfaces and Signal Descriptions
7. Control, Status, and Statistics Register Descriptions
8. Debugging the Link
9. Ethernet Toolkit Overview
10. Stratix® 10 Low Latency 40GbE IP Core User Guide Archives
11. Differences Between Stratix® 10 Low Latency 40G Ethernet IP Core and Low Latency 40G Ethernet IP Core That Targets an Arria 10 Device
12. Document Revision History for Stratix® 10 Low Latency 40G Ethernet User Guide
3.1. Installing and Licensing Intel® FPGA IP Cores
3.2. Specifying the Stratix® 10 LL 40GbE IP Core Parameters and Options
3.3. Simulating the IP Core
3.4. Generated File Structure
3.5. Integrating Your IP Core in Your Design
3.6. Stratix® 10 Low Latency 40G Ethernet IP Core Testbench
3.7. Compiling the Full Design and Programming the FPGA
3.5.4. Adding the External TX MAC PLL
If you turn on Use external TX MAC PLL in the Stratix® 10 LL 40GbE parameter editor, you must connect the clk_txmac_in input port to a clock source, usually a PLL on the device.
The clk_txmac_in signal drives the clk_txmac clock in the IP core TX MAC and PHY. If you turn off this parameter, the clk_txmac_in input clock signal is not available.
The required TX MAC clock frequency is 312.5 MHz. User logic must drive clk_txmac_in from a PLL whose input is the PHY reference clock, clk_ref.