50 Gbps Ethernet IP Core User Guide

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ID 683158
Date 5/08/2017
Public
Document Table of Contents
Document Table of Contents x
1. About the 50GbE Core 2. Getting Started 3. 50GbE Parameters 4. Functional Description 5. Reset 6. Interfaces and Signal Descriptions 7. Control and Status Register Descriptions 8. Debugging the Link 9. Document Revision History
1. About the 50GbE Core x
1.1. 50GbE Supported Features 1.2. 50GbE Core Device Family and Speed Grade Support 1.3. IP Core Verification 1.4. Performance and Resource Utilization
1.2. 50GbE Core Device Family and Speed Grade Support x
1.2.1. Device Family Support 1.2.2. 50GbE Core Device Speed Grade Support
1.3. IP Core Verification x
1.3.1. Simulation Environment 1.3.2. Compilation Checking 1.3.3. Hardware Testing
2. Getting Started x
2.1. Installing and Licensing Intel® FPGA IP Cores 2.2. Specifying the 50GbE Core Parameters and Options 2.3. Simulating the IP Core 2.4. Generated File Structure 2.5. Integrating Your IP Core in Your Design 2.6. Compiling the Full Design and Programming the FPGA
2.1. Installing and Licensing Intel® FPGA IP Cores x
2.1.1. Intel® FPGA IP Evaluation Mode
2.5. Integrating Your IP Core in Your Design x
2.5.1. Pin Assignments 2.5.2. Adding the Transceiver PLL 2.5.3. Handling Potential Jitter in Intel® Arria® 10 Devices 2.5.4. Placement Settings for the 50GbE Core
4. Functional Description x
4.1. 50GbE Core Functional Description 4.2. User Interface to Ethernet Transmission
4.1. 50GbE Core Functional Description x
4.1.1. 50GbE Core TX MAC Datapath 4.1.2. 50GbE Core RX MAC Datapath 4.1.3. Link Fault Signaling Interface 4.1.4. 50 GbE RX PCS
4.1.1. 50GbE Core TX MAC Datapath x
4.1.1.1. Frame Padding 4.1.1.2. Preamble Insertion 4.1.1.3. Inter-Packet Gap Generation and Insertion
4.1.2. 50GbE Core RX MAC Datapath x
4.1.2.1. IP Core Preamble Processing 4.1.2.2. IP Core Strict SFD Checking 4.1.2.3. IP Core Malformed Packet Handling 4.1.2.4. Length/Type Field Processing 4.1.2.5. RX CRC Checking and Dynamic Forwarding
4.1.2.4. Length/Type Field Processing x
4.1.2.4.1. Length Checking
4.2. User Interface to Ethernet Transmission x
4.2.1. Order of Transmission 4.2.2. Bit Order For TX and RX Datapaths
6. Interfaces and Signal Descriptions x
6.1. TX MAC Interface to User Logic 6.2. RX MAC Interface to User Logic 6.3. Transceivers 6.4. Transceiver Reconfiguration Signals 6.5. Avalon® Memory-Mapped Management Interface 6.6. Miscellaneous Status and Debug Signals 6.7. Reset Signals
7. Control and Status Register Descriptions x
7.1. PHY Registers 7.2. TX MAC Registers 7.3. RX MAC Registers
1. About the 50GbE Core
2. Getting Started
3. 50GbE Parameters
4. Functional Description
5. Reset
6. Interfaces and Signal Descriptions
7. Control and Status Register Descriptions
8. Debugging the Link
9. Document Revision History

1.1. 50GbE Supported Features

The 50GbE is designed to the 25G & 50G Ethernet Specification, Draft 1.6 from the 25 Gigabit Ethernet Consortium and designed to the IEEE 802.3by 25Gb Ethernet specification, as well as the IEEE 802.3ba-2012 High Speed Ethernet Standard available on the IEEE website (www.ieee.org). The MAC provides RX cut-through frame processing to optimize latency. The IP supports the following features:

  • PHY features:
    • Soft PCS logic that interfaces seamlessly to Intel® Arria® 10 FPGA 25.78125 gigabits per second (Gbps) serial transceivers.
  • Frame structure control features:
    • Support for jumbo packets, defined as packets greater than 1500 bytes.
    • Receive (RX) CRC removal and pass-through control.
    • Transmit (TX) CRC generation.
    • RX and TX preamble pass-through option for applications that require proprietary user management information transfer.
    • TX automatic frame padding to meet the 64-byte minimum Ethernet frame length.
  • Frame monitoring and statistics:
    • RX CRC checking and error reporting.
    • Optional RX strict SFD checking per IEEE specification.
    • RX malformed packet checking per IEEE specification.
    • Optional fault signaling detects and reports local fault and generates remote fault, with IEEE 802.3ba-2012 Ethernet Standard Clause 66 support.
    • Unidirectional transport as defined in Clause 66 of the IEEE 802.3-2012 Ethernet Standard.
  • Debug and testability features:
    • Programmable serial PMA local loopback (TX to RX) at the serial transceiver for self-diagnostic testing.
    • Optional access to Native PHY Debug Master Endpoint (NPDME) for serial link debugging or monitoring PHY signal integrity.
  • User system interfaces:
    • Avalon® memory-mapped management interface to access the IP control and status registers.
    • Avalon® streaming data path interface connects to client logic.
    • Ready latency of 0 clock cycles for Avalon® -ST TX interface.
    • Hardware and software reset control.

For a detailed specification of the Ethernet protocol refer to the IEEE 802.3 Ethernet Standard.

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