AFDX / ARINC 664 Tutorial

Copyrights Copyright © 2005 Condor Engineering, Inc. All rights reserved. This document may not, in whole or part, be: copied; photocopied; reproduced; translated; reduced; or transferred to any electronic medium or machine-readable form without prior consent in writing from Condor Engineering, Inc. AFDX / ARINC 664 Tutorial (1500-049) Condor Engineering, Inc. Santa Barbara, CA 93101 (805) 965-8000 (805) 963-9630 (fax) support@condoreng.com http://www.condoreng.com Document Revision: May 2005 Document Version: 3.0 Contents and Tables Contents Chapter 1 Overview The Antecedents ............................................................................................ 1 Other Avionics Buses .................................................................................... 4 ARINC 429 .............................................................................................. 4 MIL-STD-1553 ........................................................................................ 4 Chapter 2 Ethernet Ethernet .......................................................................................................... 7 ALOHA Net................................................................................................... 7 The ALOHA Protocol.............................................................................. 8 Issues ........................................................................................................ 8 Ethernet Local Area Networks (Broadcast Media)....................................... 8 The Ethernet Protocol .............................................................................. 9 Issues ........................................................................................................ 9 Ethernet Using Category 5 UTP Copper Twisted Pairs ............................... 9 Ethernet Frame Format ................................................................................ 10 Full-duplex, Switched Ethernet ................................................................... 10 The Scenario........................................................................................... 10 Doing Away with Contention

................................................................ 11 Reducing Wire Runs and Weight................................................................ 13 Chapter 3 End Systems and Avionics Subsystems End Systems and Avionics Subsystems...................................................... 15 Chapter 4 AFDX Communications Ports AFDX Communications Ports .................................................................... 17 Chapter 5 Virtual Links: Packet Routing in AFDX Virtual Links ................................................................................................ 19 AFDX / ARINC 664 Tutorial i Contents Chapter 6 Message Flows Message Flows............................................................................................. 21 Chapter 7 Redundancy Management Redundancy Management ........................................................................... 25 Chapter 8 Virtual Link Isolation Virtual Link Isolation .................................................................................. 27 Choosing the BAG and Lmax for a Virtual Link ....................................... 29 Chapter 9 Virtual Link Scheduling Virtual Link Scheduling .............................................................................. 31 Chapter 10 Jitter Jitter.............................................................................................................. 35 Chapter 11 AFDX Message Structures Introduction.................................................................................................. 37 Implicit Message Structures ........................................................................ 38 ARINC 429 Labels ...................................................................................... 40 Chapter 12 The AFDX Protocol Stack The AFDX Protocol Stack .......................................................................... 41 Transmission ................................................................................................ 41 Reception ..................................................................................................... 43 Appendix A AFDX Frame Addressing and Header Structures Ethernet Addressing .................................................................................... 45 IP Header Format and Addressing .............................................................. 45 UDP Header Format .................................................................................... 46 Appendix B Referenced Documents Reference List .............................................................................................. 47 ii AFDX / ARINC 664 Tutorial Contents Figures Figure 1. AFDX Network.............................................................................. 2 Figure 2. ARINC 429 Communication Protocol .......................................... 4 Figure 3. MIL-STD-1553 Bus Communication Protocol............................. 4 Figure 4. ALOHA Net...

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