25G Ethernet Intel® Stratix® 10 FPGA IP User Guide

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ID 683154
Date 9/15/2021
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Document Table of Contents
Document Table of Contents x
1. About the 25G Ethernet Intel FPGA IP 2. Getting Started 3. 25G Ethernet Intel FPGA IP Parameters 4. Functional Description 5. Reset 6. Interfaces and Signal Descriptions 7. Control, Status, and Statistics Register Descriptions 8. Debugging the Link 9. 25G Ethernet Intel® Stratix® 10 FPGA IP User Guide Archives 10. Document Revision History for the 25G Ethernet Intel® Stratix® 10 FPGA IP User Guide
1. About the 25G Ethernet Intel FPGA IP x
1.1. Release Information 1.2. Features 1.3. 25G Ethernet Intel FPGA IP Core Device Family and Speed Grade Support 1.4. IP Core Verification 1.5. Performance and Resource Utilization
1.3. 25G Ethernet Intel FPGA IP Core Device Family and Speed Grade Support x
1.3.1. 25G Ethernet Intel FPGA IP Core Device Family Support 1.3.2. 25G Ethernet Intel FPGA IP Core Device Speed Grade Support
1.4. IP Core Verification x
1.4.1. Simulation Environment 1.4.2. Compilation Checking 1.4.3. Hardware Testing
2. Getting Started x
2.1. Installing and Licensing Intel® FPGA IP Cores 2.2. Specifying the Intel® Stratix® 10 IP 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. Adding the External Time-of-Day Module for Variations with 1588 PTP Feature 2.5.4. Placement Settings for the 25G Ethernet Intel FPGA IP Core
4. Functional Description x
4.1. 25G Ethernet Intel FPGA IP Core Functional Description 4.2. User Interface to Ethernet Transmission
4.1. 25G Ethernet Intel FPGA IP Core Functional Description x
4.1.1. 25G Ethernet Intel FPGA IP Core TX MAC Datapath 4.1.2. 25 GbE TX PCS 4.1.3. TX RS-FEC 4.1.4. 25G Ethernet Intel FPGA IP Core RX MAC Datapath 4.1.5. Link Fault Signaling Interface 4.1.6. 25 GbE RX PCS 4.1.7. RX RS-FEC 4.1.8. Flow Control 4.1.9. 1588 Precision Time Protocol Interfaces
4.1.1. 25G Ethernet Intel FPGA IP 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 4.1.1.4. Frame Check Sequence (CRC32) Insertion
4.1.4. 25G Ethernet Intel FPGA IP Core RX MAC Datapath x
4.1.4.1. IP Core Preamble Processing 4.1.4.2. IP Core Malformed Packet Handling 4.1.4.3. Length/Type Field Processing 4.1.4.4. RX CRC Checking and Dynamic Forwarding
4.1.4.3. Length/Type Field Processing x
4.1.4.3.1. Length Checking
4.1.8. Flow Control x
4.1.8.1. TX Pause/PFC Flow Control Frame Transmission Request 4.1.8.2. XON/XOFF Pause Frames
4.1.9. 1588 Precision Time Protocol Interfaces x
4.1.9.1. Implementing a 1588 System That Includes a 25G Ethernet Intel FPGA IP Core 4.1.9.2. PTP Transmit Functionality 4.1.9.3. PTP Receive Functionality 4.1.9.4. External Time-of-Day Module for 1588 PTP Variations 4.1.9.5. PTP Timestamp and TOD Formats 4.1.9.6. Design Considerations in PTP
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. PHY Interface Signals 6.7. 1588 PTP Interface Signals 6.8. Miscellaneous Status and Debug Signals 6.9. Reset Signals
6.4. Transceiver Reconfiguration Signals x
6.4.1. Accessing the Native PHY Registers in H-Tile Devices 6.4.2. Accessing the Native PHY Registers in L-Tile Devices
7. Control, Status, and Statistics Register Descriptions x
7.1. PHY Registers 7.2. TX MAC Registers 7.3. RX MAC Registers 7.4. Pause/PFC Flow Control Registers 7.5. Statistics Registers 7.6. 1588 PTP Registers 7.7. TX Reed-Solomon FEC Registers 7.8. RX Reed-Solomon FEC Registers
7.5. Statistics Registers x
7.5.1. TX Statistics Registers 7.5.2. RX Statistics Registers
8. Debugging the Link x
8.1. Error Insertion Test and Debugging
1. About the 25G Ethernet Intel FPGA IP
2. Getting Started
3. 25G Ethernet Intel FPGA IP Parameters
4. Functional Description
5. Reset
6. Interfaces and Signal Descriptions
7. Control, Status, and Statistics Register Descriptions
8. Debugging the Link
9. 25G Ethernet Intel® Stratix® 10 FPGA IP User Guide Archives
10. Document Revision History for the 25G Ethernet Intel® Stratix® 10 FPGA IP User Guide

1.5. Performance and Resource Utilization

The following table shows the typical device resource utilization for selected configurations using the current version of the Intel® Quartus® Prime software. With the exception of M20K memory blocks, the numbers of ALMs and logic registers are rounded up to the nearest 100. The timing margin for this IP core is a minimum of 15%.

Table 5.  IP Core Variation Encoding for Resource Utilization Table for MAC+PCS+PMA Core Variant"On" indicates the parameter is turned on. The symbol "—" indicates the parameter is turned off or not available.
IP Core Variation A B C D
Parameter
Ready Latency 0 0 3 3
Enable RS-FEC — On — —
Core Variant MAC+PCS+PMA
Enable flow control — Standard flow control, 1 queue Standard flow control, 1 queue Standard flow control, 1 queue
Enable link fault generation — — On On
Enable preamble passthrough — — On On
Enable TX CRC passthrough On — — —
Enable MAC statistics counters — On On On
Enable IEEE 1588 — — On —
Enable 10G/25G Dynamic Rate Switching — — — On
Enable Native PHY Debug Master Endpoint (NPDME) — — — On
Table 6.  IP Core FPGA Resource Utilization for 25G Ethernet Intel FPGA IP Core with MAC+PCS+PMA Core Variant for Intel® Stratix® 10 DevicesLists the resources and expected performance for selected variations of the 25G Ethernet Intel FPGA IP core.

These results were obtained using the Intel® Quartus® Prime software v20.1.

  • The transceiver PLL reference clock frequency is 644.531250 MHz.
  • The numbers of ALMs and logic registers are rounded up to the nearest 100.
  • The numbers of ALMs, before rounding, are the ALMs needed numbers from the Intel® Quartus® Prime Fitter Report.

IP Core Variation

ALMs

Dedicated Logic Registers

Block Memory Bits
A 4300 9200 0
B 17700 45200 114880
C 14700 38400 11912
D 8700 18700 1024
Table 7.  IP Core Round Trip LatencyThe round trip latency values are based on the following definitions and assumptions:
  • Round trip latency is measured as the time taken for a packet to travel from TX Avalon® streaming interface to the RX Avalon® streaming interface with the IP core in serial loopback mode.
  • Latency values are obtained via simulation of the IP Core's example design generated using Intel® Quartus® Prime software v20.1. These values are expected to be different across different builds.
  • Synopsys's VCS simulator is used when measuring the following values. These values may differ across different simulators.

IP Core Variation

Latency (ns)
A 210.0
B 1002.2
C 465.2
D 10G: 668.8

25G: 265.5
Table 8.  IP Core Variation Encoding for Resource Utilization Table for MAC+PCS Core Variant"On" indicates the parameter is turned on. The symbol "—" indicates the parameter is turned off or not available.
IP Core Variation A B C D
Parameter
Ready Latency 0 0 3 3
Enable RS-FEC — On — —
Core Variant MAC+PCS
Enable flow control — Standard flow control, 1 queue Standard flow control, 1 queue Standard flow control, 1 queue
Enable link fault generation — — On On
Enable preamble passthrough — — On On
Enable TX CRC passthrough On — — —
Enable MAC statistics counters — On On On
Enable IEEE 1588 — — On —
Enable 10G/25G Dynamic Rate Switching — — — On
Enable Native PHY Debug Master Endpoint (NPDME) — — — On
Table 9.  IP Core FPGA Resource Utilization for 25G Ethernet Intel FPGA IP Core with MAC+PCS Core Variant for Intel® Stratix® 10 DevicesLists the resources and expected performance for selected variations of the 25G Ethernet Intel FPGA IP core.

These results were obtained using the Intel® Quartus® Prime software v20.1.

  • The transceiver PLL reference clock frequency is 644.531250 MHz.
  • The numbers of ALMs and logic registers are rounded up to the nearest 100.
  • The numbers of ALMs, before rounding, are the ALMs needed numbers from the Intel® Quartus® Prime Fitter Report.

IP Core Variation

ALMs

Dedicated Logic Registers

Block Memory Bits
A 4300 9200 0
B 17700 45600 114880
C 14600 37800 11912
D 8600 19500 1024
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