New-Tech Europe Magazine | February 2018

Redundancy (P802.1CB) also requires the additional port. The complete IP is illustrated in Figure 2, the user can freely configure before synthesis whether or not the switch shall be integrated. Once instantiated, the TSN IP core provides individual AXI Streaming ports for each traffic class. Scheduled traffic, reserved traffic and best effort traffic are supported. The AXI Streaming ports connect to infrastructure that is introduced by Xilinx’s Vivado ® Design Suite. AXI Lite is used for the configuration of the TSN blocks. Xilinx provides a ready-to-use implementation for evaluation purposes that includes Direct Memory Access separately for each of the traffic classes. This evaluation system can be used as is to test the behavior betweenXilinx components as well as in combination with 3rd party equipment or with protocol analyzers. Figure 4 shows a block diagram of the evaluation system. As Programmable Logic is flexible, it also provides the ability to update the IP Core as the TSN standards and market segment specific conformance tests progress, while devices with fixed hardware implementations (like custom ASICS and Application Specific Standard Products – ASSPs) lack the option to introduce functional changes along the TSN evolution. To demonstrate the TSN IP core in action, Xilinx developed a demonstration application for both the ZCU102 and ZC702 development boards, featuring devices from the Zynq UltraScale+ MPSoC and Zynq-7000 families, respectively. When two of these boards are

Figure 5: TSN Evaluation System (here: for Zynq UltraScale+ MPSoC).

networks. TSN provides the ability to converge these networks, offering significant advantages in network connectivity, scalability and cost of deployment and ownership. Implementing TSN within an All Programmable Zynq-7000 or Zynq UltraScale+ MPSoC device provides the user with a single chip solution, which can also provide the processing capability in the PS and PL to perform the IIoT application at the edge. Xilinx’s TSN has been released with the name 1G/100M TSN Subsystem LogiCORE IP in May 2017 for early access customers and will continue the rollout in Q4/2017. For more information, please visit: https://www.xilinx.com/support/ documentation/white_papers/ wp493-iiot-edge-platforms.pdf

connected (Figure 5) it enables network traffic to be transmitted and received, enabling validation of TSN networking capabilities. To further support TSN deployment and applications, Xilinx is a member of the Time Sensitive Networking testbed at the Industrial Internet Consortium (IIC). Participation within this testbed provides the ability to perform vendor interoperability testing, along with testing of high performance and latency critical applications. This testing can occur both formally on one of the two permanent testbeds located in either the USA or Europe. Wrapping it up To enable deployment of the cyber physical systems for Industrie 4.0 and IIoT, there needs to be convergence between IT and OT

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