Scope of SAE AS6003

This SAE Aerospace Standard (AS) establishes the specification for the TTP communication protocol functionality as a core networking component of synchronous, time-driven distributed real-time systems. This document is referred to as the base specification, containing the generic specification of TTP protocol functionality, media access, communication services, and protocol state machines with transitions, TTP node operation, TTP network operation, datalink layer and frame formats, distributed clock synchronization, and error detection on the network layer.

Physical layer (AS) standard for TTP based on MIL-1553 and RS-485 systems are handled in ongoing AS6003/1 and AS6003/2 standardization projects.

Rationale for the Creation of the Standard

The SAE standardization should support creation of larger COTS ecosystem, protect system design investments, and reduce long-term components sourcing risks for OEMs, integrators and system suppliers.

TTP is used in a variety of aerospace applications such as electric and environmental control systems for Boeing 787, the cabin pressure control system for Airbus A380, and Full Authority Digital Engine (FADEC) controls for Aermacchi M-346 and Lockheed Martin F-16 , and continues to attract significant cross-industry attention for commercial and defense application. TTP is also selected for flight control systems in new regional aircraft and business jets such as Bombardier CSeries and Embraer Legacy.

Standard Release

TTP standard (SAE AS6003) has been released by SAE in February 2011.

SAE AS-2D works on physical layer (AS) standard for TTP based on MIL-1553 and RS-485. Standard release is expected in H1/2012.

More information on TTP can be found on the IHS website.