TSN-EP: TSN Ethernet Endpoint Core

Block Diagram

Solution Type: IP Core

End Market: Automotive, Industrial, Medical, Test & Measurement

Evaluation Method: OpenCore Plus

Technology: Interface Protocols: Ethernet

-Devices: FPGAs: Intel® Agilex™

Arria Series: Intel® Arria® 10, Arria® V, Intel® Arria® 10 SoC, Arria® V SoC

Cyclone Series: Intel® Cyclone® 10: Intel® Cyclone® 10 GX, Intel® Cyclone® 10 LP; Cyclone® IV, Cyclone® V, Cyclone® V SoC

MAX Series: Intel® MAX® 10

Stratix Series: Intel® Stratix® 10, Stratix® IV, Stratix® V


The TSN-EP implements an endpoint controller suitable for the implementation of endpoints in TSN Ethernet networks using a star topology. It integrates hardware stacks for timing synchronization (IEEE 802.1AS), traffic shaping (IEEE 802.1Qav, IEEE 802.1Qbv), frame preemption (IEEE 802.1Qbu, IEEE 802.1Qbr), and a low-latency Ethernet MAC. The controller core is designed to enable high-precision timing synchronization, flexible yet accurate traffic scheduling and extremely low latency switching. The TSN-EP has been proven in several LNI 4.0 and IIC plugfests, and has been successfully deployed in several customer products.


  • TSN Ethernet Endpoint: One Ethernet ports & one host processor port. suitable for star-topology networks
  • Integrates low-latency MAC, traffic scheduler, and time synchronization stack. Supports: IEEE 802.1Qav, Qbv, Qbu, Qbr, & IEEE 802.1AS
  • Enables high-precision, sub-microsecond timing synchronization
  • Complete reference design available

Device Utilization and Performance

The TSN-EP core can be mapped to any Intel Device (provided sufficient silicon resources are available) and optimized to suit the particular project’s requirements. The size of the core depends on its configuration. Typical configurations occupy 2,000 to 6,000 ALMs. Please contact CAST to discuss resource utilization and performance for your application and target device

Getting Started

Contact CAST at info@cast-inc.com to arrange for a core evaluation

IP Quality Metrics

Year IP was first released2017
Latest version of Quartus supported18.0
Altera Customer Use
IP has been successfully implemented in production with at least one customerY

Customer deliverables include the following:

  • Design file (encrypted source code or post-synthesis netlist)
  • Simulation model for ModelSim Altera edition
  • Timing and/or layout constraints
  • Testbench or design example
  • Documentation with revision control
  • Readme file
Parameterization GUI allowing end user to configure IPN
IP core is enabled for OpenCore Plus SupportY
Source language
Testbench languageVerilog
Software drivers providedY
Driver OS supportFreeRTOS, Linux
User InterfaceAXI
IP-XACT Metadata includedN
Simulators supportedModelSim, Questa, NC-SIM
Hardware validated Y. Altera Board Name Aria10-GX Devkit, Max 10 Devkit, NovTech Netleap
Industry standard compliance testing performed
If No, is it planned?N
IP has undergone interoperability testing
Interoperability reports available  N

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