F-Tile Low Latency Ethernet 10G MAC Intel® FPGA IP Design Example User Guide

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ID 720987
Date 1/24/2025
Public
Document Table of Contents
Document Table of Contents x
1. About the F-Tile Low Latency Ethernet 10G MAC Intel® FPGA IP Design Example User Guide 2. Quick Start Guide 3. 10M/100M/1G/2.5G/5G/10G (USXGMII) Ethernet Design Example 4. Interface Signals Description 5. Configuration Registers Description 6. F-Tile Low Latency Ethernet 10G MAC Intel FPGA IP Design Example User Guide Archives 7. Document Revision History for the F-Tile Low Latency Ethernet 10G MAC Intel® FPGA IP Design Example User Guide
2. Quick Start Guide x
2.1. Directory Structure 2.2. Generating the Design 2.3. Compiling and Simulating the Design 2.4. Compiling and Testing the Design in Hardware 2.5. Signal Tap Debugging
2.2. Generating the Design x
2.2.1. Procedure 2.2.2. Design Example Parameters
2.3. Compiling and Simulating the Design x
2.3.1. Procedure 2.3.2. Testbench
2.4. Compiling and Testing the Design in Hardware x
2.4.1. Procedure 2.4.2. Hardware Setup
2.5. Signal Tap Debugging x
2.5.1. Signal Tap Debug Signals
3. 10M/100M/1G/2.5G/5G/10G (USXGMII) Ethernet Design Example x
3.1. Features 3.2. Hardware and Software Requirements 3.3. Functional Description 3.4. Simulation 3.5. Hardware Testing 3.6. Interface Signals 3.7. Configuration Registers
3.3. Functional Description x
3.3.1. Design Components 3.3.2. Clocking Scheme 3.3.3. Reset Scheme
3.3.3. Reset Scheme x
3.3.3.1. Reset Sequence
3.3.3.1. Reset Sequence x
3.3.3.1.1. Run-time Reset Sequence—TX 3.3.3.1.2. Run-time Reset Sequence—RX 3.3.3.1.3. Run-time Reset Sequence—TX + RX
3.4. Simulation x
3.4.1. Test Case—Design Example with the IEEE 1588v2 Feature 3.4.2. Test Case—Design Example without the IEEE 1588v2 Feature
3.5. Hardware Testing x
3.5.1. Test Procedure 3.5.2. Design Constraints
4. Interface Signals Description x
4.1. Clock and Reset Interface Signals 4.2. Avalon® Memory-Mapped Interface Signals 4.3. Avalon® Streaming Interface Signals 4.4. PHY Interface Signals 4.5. Status Interface 4.6. IEEE 1588v2 Timestamp Interface Signals 4.7. Packet Classifier Interface Signals 4.8. TOD Interface Signals
5. Configuration Registers Description x
5.1. Register Access Definition 5.2. Low Latency Ethernet 10G MAC 5.3. PHY 5.4. TOD
5.3. PHY x
5.3.1. 1G/2.5G/5G/10G Multirate PHY
1. About the F-Tile Low Latency Ethernet 10G MAC Intel® FPGA IP Design Example User Guide
2. Quick Start Guide
3. 10M/100M/1G/2.5G/5G/10G (USXGMII) Ethernet Design Example
4. Interface Signals Description
5. Configuration Registers Description
6. F-Tile Low Latency Ethernet 10G MAC Intel FPGA IP Design Example User Guide Archives
7. Document Revision History for the F-Tile Low Latency Ethernet 10G MAC Intel® FPGA IP Design Example User Guide

4.1. Clock and Reset Interface Signals

Table 11.  Clock and Reset Interface Signals
Signal Direction Width Description
csr_clk In 1 125 MHz configuration clock for the Avalon® memory-mapped interface and core logic.
i_reconfig_reset In 1

Active-high reset signal for the Avalon® memory-mapped interface.

i_tx_rst_n In 1

Active-low reset asynchronous signal. Resets the entire TX datapath, including the TX PCS, TX MAC, and TX PMA. Do not deassert until the o_rst_ack_n asserts.

i_rx_rst_n In 1

Active-low reset asynchronous signal. Resets the entire RX datapath, including the RX PCS, RX MAC, and RX PMA. Do not deassert until the o_rst_ack_n asserts.

mac64b_clk

mac32b_clk

Out 1 156.25 MHz and 312.5 MHz configuration clock for the Avalon® streaming interface and 0 ppm frequency difference with refclk.
refclk_10g In 1 156.25 MHz reference clock for the System PLL.
reset In 1 Assert this asynchronous and active-high signal to reset the whole design example.
tx_digitalreset Out [NUM_CHANNELS]

Asynchronous and active-high signal to reset PCS TX portion of the transceiver PHY.
rx_digitalreset Out [NUM_CHANNELS]

Asynchronous and active-high signal to reset PCS RX portion of the transceiver PHY.
i_rst_n In 1 Active-low reset asynchronous signal. Do not deassert until the o_rst_ack_n signal is asserted ('0').

Resets the TX interface (TX PCS and TX MAC), RX interface (RX PCS and RX MAC), TX PMA, and RX PMA. This reset leads to the assertion of the o_rst_ack_n output signal.

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