Intel® FPGA IP for 50G Ethernet MAC and PHY Function

Intel offers ultimate flexibilty, scalability, and configurability with the 100G Ethernet Soft intellectual property (IP) cores targeted for use in network infrastructure and data center applications.  The Low Latency and Legacy Intel® FPGA IP cores for 100G Ethernet are IEEE 802.3ba-2010 standard compliant and include a media access control (MAC), PHY, comprised of physical coding sublayer (PCS) and physical medium attachment (PMA), an optional forward error correction (FEC) block, timestamping with IEEE 1588v2 support and the capability to drive backplanes on supported Stratix® and Arria® FPGAs. The PHY block (PCS-FEC-PMA)  is also available as a standalone block in case users want to use their own MAC IP.

The 100GE MAC and PHY function is also available in Hard IP form on Intel Stratix 10 devices with H-Tile(s) and E-Tile(s). More information is available on Intel Stratix 10 FPGA H-Tile Hard IP for Ethernet IP Core and Intel Stratix 10 FPGA E-Tile Hard IP for Ethernet IP Core pages respectively. 

The Intel FPGA IP for 100G Ethernet can be used for any chip-to-chip interconnect, or to interface to copper or optical transceiver modules to drive cabling. 

50G Ethernet features

  • Compliant with the 25G and 50G Ethernet Specification, Draft 1.4 from the 25 Gigabit Ethernet Consortium
  • Supports 64B/66B encoding with data striping and alignment markers to align data
  • Avalon® Memory-Mapped (Avalon-MM) management interface to access the IP control and status registers
  • Avalon Streaming (Avalon-ST) datapath interface connects to client logic with the start of frame in the most significant bit (MSB)
  • Support for jumbo packets, defined as packets greater than 1,500 bytes
  • Receiver (RX) cyclic redundancy check (CRC) removal and pass-through control
  • Transmitter (TX) CRC generation and insertion
  • RX CRC checking and error reporting
  • TX error insertion capability
  • 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
  • Hardware and software reset control
  • MAC provides cut-through frame processing, no store-and-forward capability
  • Deficit idle counter (DIC) to maintain a 12-byte inter-packet gap (IPG) average
  • Optional fault signaling: detects and reports local fault and generates remote fault with IEEE
  • 802.3ba-2012 Ethernet Standard Clause 66 support
  • Optional serial PMA loopback (TX to RX) at the serial transceiver for self-diagnostic testing
  • Optional access to Intel FPGA Debug Master Endpoint
  • Partial reconfiguration of the FPGA fabric
  • Ready latency of 0 or 3 cycles for Avalon-ST TX interface


Year IP was first released


Latest version of Intel® Quartus® software supported



Early Access

Customer deliverables include the following:

  • Design file (encrypted source code or post-synthesis netlist)
  • Simulation model for ModelSim*- Intel FPGA Edition
  • Timing and/or layout constraints
  • Documentation with revision control
  • Readme file


Any additional customer deliverables provided with IP


Parameterization GUI allowing end user to configure IP


IP is enabled for Intel FPGA IP Evaluation Mode Support


Source language


Testbench language


Software drivers provided


Driver operating system (OS) support



User interface

Avalon®-ST (Datapath), Avalon-MM (Management)

IP-XACT metadata



Simulators supported

Mentor Graphics*, Synopsys*, Cadence*

Hardware validated

Intel Arria® 10 GT, Intel Stratix® 10 devices with H-Tile(s)

Industry standard compliance testing performed


If Yes, which test(s)?


If Yes, on which Intel FPGA device(s)?


If Yes, date performed


If No, is it planned?



IP has undergone interoperability testing


If yes, on which Intel FPGA device(s)

Arria 10 GT device

Interoperability reports available