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TTTech has developed TTEthernet switches for hard real-time data communication.

The company said the key benefit of the switches is the additional support for the TTEthernet protocol.

In order to define and develop a TTEthernet system different switches are available: the TTE-Development Switch – available with 100Mbit/s ports or 1Gbit/s ports – and the TTE-Monitoring Switch for monitoring of data streams.

TTEthernet technology enables hard real-time operation in distributed systems based on Ethernet networks.

TTEthernet offers full scalability for real-time architectures based on standard IEEE 802.3 Ethernet, from low-cost, low-integrity to highly fault-tolerant systems.

TTEthernet switches take care of partitioning among time-triggered, rate-constraint, and best-effort Ethernet traffic.

High-priority time-triggered messages are routed through the switch according to a predefined schedule with pre-definable constant latency and jitter in the sub-microsecond range.

Rate-constraint messages are passed on according to the respective guaranteed bandwidth reservations.

Finally, best-effort Ethernet messages are forwarded when bandwidth is available.

The TTE-Development Switch 100Mbit/s has eight ports and is based on an Altera Cyclone III FPGA, offering maximum flexibility for customer-specific extensions.

By using the software tool TTE-Load, the configuration data of the switch can be updated via the network.

The configuration data will be stored in non-volatile memory and will become effective at the next power-up or reset.

The TTE-Development Switch 1Gbit/s provides four SFP slots where each supports a bandwidth of 1Gbit/s.

Each slot can be equipped with an SFP module using copper or fibre as a transmission medium.

The switch is based on an Altera Stratix II GX FPGA board.

The TTE-Monitoring Switch offers the same features as the TTE-Development Switch 1Gbit/s.

In addition, it contains four 1Gbit/s monitoring ports that allow monitoring the traffic of a TTEthernet network.

The switch provides an easy-to-use debugging solution, speeding up rapid-prototyping processes and enabling convenient debugging of TTEthernet networks.

TT Tech Computertechnik

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