Time-Triggered Ethernet for Hard Real-Time Data Communication

TTE Development Switch
Time-Triggered Ethernet for Hard Real-Time Data Communication
The TTEthernet technology enables hard real-time operation in distributed systems based on Ethernet
networks. TTEthernet switches maintain the hard real-time data communication and take care of partitioning
among standard Ethernet, rate-constrained and time-triggered Ethernet message traffic. High-priority timetriggered
messages are routed through the switch according to a predefined schedule with transport delay
jitter in the sub-microsecond range. All other Ethernet messages are forwarded when the bandwidth is
available.
The TTE Development Switch is based on an Altera Stratix II GX FPGA board and offers four 1 Gbit/s ports,
each one connected either via a small form factor pluggable (SFP) module or an RJ-45 connector. The SFP
slots are populated with 850 nm optical LC modules.
Using TTE Load, the configuration data of the TTE Development Switch can be updated via the network. These
data will be stored to its non-volatile memory and will become effective at the next power-up or reset.
TTTech Computertechnik AG
Schoenbrunner Str. 7, A-1040 Vienna, Austria, Tel. +43 1 585 34 34-0, Fax +43 1 585 34 34-90, office@tttech.com, www.tttech.com

Device Features
Four 1 Gbit/s ports – either copper or SFP
Configuration data programmable via the network
TTEthernet Features
System-wide synchronized time base
Store-and-forward message relay mechanism
Basic firewall capabilities
Standard IEEE 802.3 flow control mechanism
Three different traffic classes:
Time-triggered messages with arrival window checking and deterministic delay
Rate-constrained messages with bag checking
Standard Ethernet messages with IEEE 802.3 flow control
Multi-hop capability: switches can be linked together and synchronized to each other
Subject to changes and corrections.
For further information, including price and availability, contact products@tttech.com.
TTEthernet is a registered trademark of TTTech Computertechnik AG. All other trademarks are the property of their respective holders.
Copyright © 2008, TTTech Computertechnik AG. All rights reserved. D-DEVSW-E-04-001 V1.0