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IEEE-1394 Beta PHY Enhancements

2022-05-25
WIP
AS5643/3
Define IEEE-1394 Beta PHY Enhancements that drive faster 1394 port connects and increased robustness. These enhancements include Detect loss of descrambler synchronization, Fast-ReTrain, Fast Power-on Re-connect, Fast Connection Tone Debounce and Programmable invalidCount.
Standard

S200 Copper Media Interface Characteristics Over Extended Distances

2022-05-25
WIP
AS5643/2
This SAE Aerospace Standard (AS) establishes guidelines for the use of IEEE-1394-2008 Beta (formerly IEEE-1394b) as a data bus network in military and aerospace vehicles. It encompasses the data bus cable and its interface electronics for a system utilizing S200 over copper medium over extended lengths. This document contains extensions/restrictions to AS5643/1 to support S200 data rate. This document does not identify specific environmental requirements (electromagnetic compatibility, temperature, vibration, etc.); such requirements will be vehicle-specific and even LRU-specific. However, the hardware requirements and examples contained herein do address many of the environmental conditions that military and aerospace vehicles may experience. One should reference the appropriate sections of MIL-STD-461E for their particular LRU, and utilize handbooks such as MIL-HDBK-454A and MIL-HDBK-5400 for guidance.
Standard

Aerospace TSN Profile

2019-10-24
WIP
AS6675
Develop a profile of the TSN set of standards that is applicable to Avionics use cases, including AS6509 CAIN
Standard

IEEE-1394b for Military and Aerospace Vehicles - Applications Handbook

2019-08-12
CURRENT
AIR5654A
This Handbook is intended to accompany or incorporate AS5643, AS5643/1, AS5657, AS5706, and ARD5708. In addition, full understanding of this Handbook also requires knowledge of IEEE-1394-1995, IEEE-1394a, and IEEE-1394b standards. This Handbook contains detailed explanations and architecture analysis on AS5643, bus timing and scheduling considerations, system redundancy design considerations, suggestions on AS5643-based system configurations, cable selection guidance, and lessons learned on failure modes.
Standard

Broadband 1553

2018-05-22
WIP
AS8774
This standard defines a broadband time division command/response multiplex data bus that co-exists and permits concurrent operation with a MIL-STD-1553 Data Bus and MIL-STD-1760 Appendix C. This standard allows utilization of legacy MIL-STD-1553 wiring and bus coupling.
Standard

10 Megabit/sec Network Configuration Digital Time Division Command/Response Multiplex Data Bus

2018-01-18
CURRENT
AS5652A
This SAE Aerospace Standard (AS) contains requirements for a digital time division command/response multiplex data bus, for use in systems integration that is functionally similar to MIL-STD-1553B with Notice 2 but with a star topology and some deleted functionality. Even with the use of this document, differences may exist between multiplex data buses in different system applications due to particular application requirements and the options allowed in this document. The system designer must recognize this fact and design the multiplex bus controller (BC) hardware and software to accommodate such differences. These designer selected options must exist to allow the necessary flexibility in the design of specific multiplex systems in order to provide for the control mechanism, architectural redundancy, degradation concept, and traffic patterns peculiar to the specific application requirements.
Standard

Validation Test Plan for the Digital Time Division Command/Response Multiplex Data Bus Remote Terminals

2017-08-10
CURRENT
AS4111A
This SAE Aerospace Standard (AS) contains a sample test plan for AS15531 or MIL-STD-1553B Remote Terminals (RT) that may serve several different purposes. This document is intended to be contractually binding when specifically called out in a specification, Statement of Work (SOW), or when required by a Data Item Description (DID). Any and all contractor changes, alterations, or testing deviations to this section shall be separately listed for easy review.
Standard

Guidelines for Ethernet Physical Layer on Military and Aerospace Vehicle Applications

2017-08-01
WIP
ARP7208
This ARP establishes guidelines for the use of IEEE-802.3 as a data bus network in military and aerospace vehicles. It encompasses the data cable and its connections for a system utilizing 10Base-T, 100Base-T, 1000BASE-T and 10GBASE-T over copper medium dependent interfaces (MDI). This document contains extensions/restrictions to “off-the-shelf” IEEE-802.3 standards, and assumes that the reader already has a working knowledge of IEEE-802.3.
Standard

Digital Time Division Command/Response Multiplex Data Bus

2017-03-21
CURRENT
AS15531A
This SAE Aerospace Standard (AS) contains requirements for a digital time division command/response multiplex data bus, for use in systems integration, that is functionally equivalent to MIL-STD-1553B with Notice 2. Even with the use of this document, differences may exist between multiplex data buses in different system applications due to particular application requirements and the options allowed in this document. The system designer must recognize this fact and design the multiplex bus controller (BC) hardware and software to accommodate such differences. These designer selected options must exist to allow the necessary flexibility in the design of specific multiplex systems in order to provide for the control mechanism, architectural redundancy, degradation concept, and traffic patterns peculiar to the specific application requirements.
Standard

Linear Token Passing Multiplex Data Bus

2017-02-21
CURRENT
AS4074B
This standard specifies the characteristics of the SAE Linear Token Passing Bus (LTPB) Interface Unit. The LTPB provides a high reliability, high bandwidth, low latency serial interconnection network suitable for utilization in real time military and commercial applications. Multiple redundant data paths can be implemented to enhance reliability and survivability in those applications which require these attributes. The token passing and data exchange protocols are optimized to provide low latency and fast failure detection and correction. Physical configurations with bus lengths up to 1000 m can be accommodated.
Standard

Statement on Requirements for Real-Time Communication Protocols (RTCP)

2016-10-21
CURRENT
AIR4886A
The purpose of this document is to establish the requirements for Real-Time Communication Protocols (RTCP). Systems for real-time applications are characterized by the presence of hard deadlines where failure to meet a deadline must be considered a system fault. These requirements have been driven predominantly, but not exclusively, by aerospace type military platforms and commercial aircraft, but are generally applicable to any distributed, real-time, control systems. These requirements are primarily targeted for the Transport and Network Layers of peer to peer protocols, as referenced in the Open System Interconnect Reference Model (2.2.1 and 2.2.2), developed by the International Standards Organization (ISO). These requirements are intended to complement SAE AS4074 (2.1.1) and AS4075 (2.1.2), and future SAE communications standards.
Standard

Handbook for the Digital Time Division Command/Response Multiplex Data Bus Test Plans

2016-10-21
CURRENT
AIR4295A
This document contains guidance for using SAE publications, AS4112 through AS4117 (MIL-STD-1553 related Test Plans). Included herein are the referenced test plan paragraphs numbers and titles, the purpose of the test, the associated MIL-STD-1553 paragraph, commentary concerning test methods and rationale, and instrumentation requirements.
Standard

Data Word and Message Formats

2016-10-21
CURRENT
AS15532A
The emphasis in this standard is the development of data word and message formats for AS15531 or MIL-STD-1553 data bus applications. This standard is intended as a guide for the designer to identify standard data words and messages for use in avionics systems and subsystems. These standard words and messages, as well as the documentation format for interface control document (ICD) sheets, provide the basis for defining 15531/1553 systems. Also provided in this standard is the method for developing additional data word formats and messages that may be required by a particular system but are not covered by the formats provided herein. It is essential that any new word formats or message formats that are developed for a 15531/1553 application follow the fundamental guidelines established in this standard in order to ease future standardization of these words and messages. The standard word formats presented represent a composite result of studies conducted by the U.S.
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