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SAE International Releases Deterministic TTP Databus Standard (SAE AS6003)

WARRENDALE, Pa., Feb. 9, 2011 - SAE International’s AS-2 Embedded Computing Systems Committee has completed a new industry standard for deterministic high-speed communication in safety-critical systems. The new standard, “SAE AS6003 - TTP Communication Protocol” can be downloaded from the SAE International website -www.sae.org .

Over the last 10 years, TTP (Time-Triggered Protocol) has established itself as a key networking technology for airworthy distributed controls – from engine controls, cabin systems, and power generation to flight controls. It has been selected for airworthy systems in Boeing B787, Airbus A380, Bombardier CSeries, Embraer Legacy and other modern aircraft.

TTP offers at least an order of magnitude increase in communication bandwidth compared to ARINC429 (>50x), MIL-1553(>5x) and CAN (>10x). Beyond its enhanced deterministic communication capability, TTP provides distributed platform services which simplify design of advanced integrated system, thus reducing software and system lifecycle costs for time- and safety-critical applications.

TTP (SAE AS6003) is the first in a series of deterministic time-triggered networking technologies to be standardized by SAE International. Ongoing standardization projects for TTP physical layers based on MIL-1553 (AS6003/1) and RS-485 (AS6003/2) will enhance effective design of complex distributed architectures operating in harsh environments.

The SAE AS-2D committee is also working on a deterministic high-bandwidth unified Ethernet networking standard (SAE AS6802 TTEthernet) which will simplify design of advanced avionics and net-centric applications based on complex Ethernet-based networks.

SAE International’s AS-2 Embedded Computing Systems Committee addresses all facets of embedded computing systems – design, maintenance and in-service experience. The committee is part of SAE International’s Avionic Systems Division.

SAE International provides some of the key system architecture, design and networking standards; reports; and recommended practices for commercial and military avionics.

SAE International is a global association of more than 128,000 engineers and related technical experts in the aerospace, automotive and commercial-vehicle industries. SAE International's core competencies are life-long learning and voluntary consensus standards development. SAE International's charitable arm is the SAE Foundation, which supports many programs, including A World In Motion® and the Collegiate Design Series.


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