40G/25G/10G/1G UDP/IP + MAC IP Core for FPGAs

available on


compliant with


The world’s most reliable and mature full hardware
UDP/IP and MAC IP Cores.

Bring the best-in-class network connectivity to your hardware code and algorithms with Enyx rock-solid and acclaimed Ethernet IP Cores. Minimize time-to-market with our full RTL implementation and support. Stay always at the forefront of technology with our frequent updates with the latest improvements and optimizations.

Client profiles include

enyx-ip-core-client-profile-_universities-and-labs enyx-ip-core-client-profile-_Telecom-operators enyx-ip-core-client-profile-_Technology-manufacturers enyx-ip-core-client-profile-_military-and-defense enyx-ip-core-client-profile-_high-performance-computing enyx-ip-core-client-profile-_aerospace-and-aeronautics

Key points

40G/25G/10G/1G Ethernet connectivity. Maximum bandwidth delivered with low latency.

Full RTL Layers 2, 3 and 4, which include Enyx proprietary full-hardware UDP/IP, ARP, ICMP, IGMP and MAC implementations.

Easy to use standardized Avalon and AXI-4 interfaces.

Support of multiple instances per FPGA.

Each connection can be configured dynamically in server or client mode.

Support for Unicast and Multicast transmit/receive.

Supported FPGAs


Technical specifications

Management of layers 1, 2, 3 and 4 (OSI Model), compliant with
– Layer 1: Ethernet (IEEE802.3).
– Layer 2: Ethernet (IEEE802.3), ARP (RFC 826).
– Layer 3: IPv4 (RFC 791), ICMP (RFC 792) and IGMPv2 (RFC 2236).
– Layer 4: TCP (RFC 793), UDP (RFC 768) or UDP+PGM (RFC 3208).

Layers 1 and 2: Physical and Data Link

PHY Interface
1G – 10/100/1000M – 1000BASE-X/SGMII interface (9-bit @ 125 MHz) to integrated SGMII PHY or 1000BASE-X with PMA-PCS
10G – XGMII interface (72-bit @ 156.25 MHz) to integrated XAUI PHY or 10GBase-R with PMA-PCS
25G – XXVGMII interface (72-bit @ 390.625 MHz) to integrated XXVAUI or 25GBase-R with PMA-PCS.
40G – XLAUI interface (144-bit @ 312.5 MHz or 288-bit @ 156.25MHz)

Raw MAC Stream Interface (access to MAC in promiscuous/transparent mode)
1G – 64-bit wide @ 125 MHz
10G – 64-bit wide @ 156.25 MHz
25G – 128-bit wide @ 195.3125 MHz
40G – 128-bit @ 312.5 Mhz or 256-bit@ 156.25 MHz

Customizable MTU (Maximum Transmission Unit)
– Up to 9000 bytes payload to support from standard to jumbo frames.

Layers 3 and 4: Network and Transport

ICMP and ARP protocols
– Support for ARP static tables.

Multiple Interfaces
– Up to 8 logical interfaces per instance, each of them with unique IPv4 and MAC addresses, VLAN ID, gateway and mask.

Avalon/AXI-4 Streaming Interface
1G – 128-bit wide @ 125 MHz
10G – 128-bit wide @ 156.25 MHz
25G – 128-bit wide @ 195.3125 MHz
40G – 128-bit wide @ 312.5 MHz

Configuration and management interface
– 32-bit Avalon-MM/AXI-4 lite slave control interface.
– Status and statistics available for monitoring at MAC, TCP and UDP session level.

Linux Drivers and C API (Enyx Development Framework)
– With control, monitoring and streaming to/from CPUs.
– Support for non-offloaded protocols or sessions (DHCP, etc.)

UDP/IP specifications

Up to 256 UDP sessions

IGMPv2 protocol
Support for Membership Report/Leave message generation (for UDP multicast groups).
– Support for Membership Query message reception.

Supports Unicast and Multicast transmit/receive

Package contents

nxUDP IP Core
– Libraries for functional simulation
– Synthesizable VHDL and Verilog RTL (encrypted) for synthesis/implementation

nxUDP Testbench
– Simulation libraries

Client-Server Reference Designs
– Simulation environment and scripts
– Quartus II and Vivado Synthesis/implementation project for supported partner’s
– Integrated support for 10GBase-R or XAUI External PHY to QSFP/SFP+ module

Complete Documentation
– nxUDP user’s manual
– Getting started guide

Technical Support and Maintenance Updates
– 1 year of technical support
– 1 year of IP updates

Enyx certified board partners