What makes an Avionics bus: The important factors of avionics buses include; Deterministic behavior, Fault tolerance, and Redundancy. Most avionics buses are serial in nature. A serial bus using only a few sets of wires keeps the point to point wiring and weight down to a minimum. MIL-STD-1553 (rev B) is the best known military example, having been developed in the 1970s. The trend seems to be moving to Fiber buses, MIL-STD-1773 being the fiber version of 1553. Switched fabric networks are used to provide Fault tolerance....
US Department Of Defense 'DOD
Index of Specifications and Standards'
UK Defense Standardization
'DSTAN'
Avionic Systems Standardization
Committee 'ASCC'
American Institute of Aeronautics and
Astronautics, Inc. "AIAA"
Air Transport Association of America,
Inc. "ATA"
ARINC 'Aeronautical Radio INC'
Society of Automotive Engineers 'SAE'
IEEE 'Institute of Electrical and
Electronic Engineers' .... ANSI
{American National Standards Institute}
NASA 'National Aeronautics and
Space Administration' ... and NASA '~ Aero-Space Technology
Enterprise'
FAA 'Federal Aviation Administration', FAR 'Federal Aviation Regulations', and FAR Bus topics; Federal Aviation Regulations, Index page
Databus Tutorial Ballard Technology Inc.
JIAWG: Joint Integrated Avionics Working Group
Bus Standards Organizations Info: The US Military uses terms like MIL-STD-xxxx (Military Standard-"Doc #"). The United Kingdom (UK) uses DEF-STAN-xxxx (Defense Standard-"Doc#"), NATO calls their specifications STANAG (Standard Agreement). In some cases US military standards are transferred to a commercial standards agency for control. In these cases the military standard is retired and the document takes on the name of the commercial agency. In the case of the 1553B bus, the name changed from MIL-STD-1553B (US government standard) to AS 1553B (SAE standard). Aeronautical Radio inc. produces many of the commercial avionics standards, termed ARINC #. Of course the IEEE or ANSI control many bus standards.
AIR1189 Airborne Internal Interface Standards for Moderate Bit
Rate Digital Time Division - Multiplex Systems
AIR4013A Multiplex Data Bus Networks for Mil-Std-1760 Stores
ARP4258 Application of Low Speed Avionic System Discrete Signal
Interfaces
AS15531 Digital Time Division Command/Response Multiplex Data
Bus
AS4075 High Speed Ring Bus (Hsrb) Standard
AS4075/1 Optical Implementation Relating to the High Speed Ring
Bus (Hsrb) Standard
AS4710 Pi-Bus
AS5370 Multi-Transmitter Bidirectional Fiber-Optic Data Bus for
Distributed Aircraft Control Systems
AS5643 IEEE-1394b Interface Requirements for Military and
Aerospace Vehicle Applications
Backplane Data Bus for Integrated Modular Avionics Backplane Data Bus, operates at 60Mbps as a commercial aviation bus. SAFEbus architecture, developed by Honeywell is based on ARINC 659.
MIL-STD-2204 This Web Site: (FDDI), or (SafeNet)
Multi-Transmitter Data Bus. Serial data bus which operates over cable at 2Mbps. Developed by Boeing.
Digital Information Transfer System. Point-to-point, 2-wire Bi-Polar
Return-to-Zero signal. 32 bit data. 100K or 12.5K bit rate.
May use Williamsburg Protocol, which transferred blocks of data. Similar
to ARINC 575, but being replaced by 629.
ARINC 818 released in Jan. 07, is a video interface and protocol standard developed for high bandwidth, low latency, uncompressed digital video transmission.
Video systems include: infrared and other wave length sensors, optical cameras, radar, flight recorders, map/chart systems, synthetic vision, image fusion systems, heads-up displays and heads-down multifunction displays, and video concentrators.
ARINC 818 is a point-to-point, 8B/10B encoded serial protocol for transmission of video, audio, and data. The protocol is packetized, but is video-centric and very flexible, supporting a single link or the transmission of a single stream over a dual link.
For additional information refer to arinc818.com
Spaceborne Fiber Optic Data Bus (SFODB); 1 Gb/s, fiber.
Fiber Optic Data Bus Publications {NASA}
TM-Bus {Test and Maintenance - Bus}. Works in conjunction with the PI-Bus. Adapted by both JIAWG and SAE.
IEEE Std 1149.5-1995 IEEE Standard for Module Test and Maintenance
Bus (MTM-Bus) Protocol
Specifies a serial, backplane, test and maintenance bus (MTM-Bus).....
between a Test Control Master and up to 250 Slave modules. The interface
has 5 signals:
MTM Clock (MCLK), MTM Control (MCTL), MTM Master Data (MMD), MTM Slave
Data (MSD), and MTM Pause Request (MPR).
This specification is used at the Board level while 1149.1 is used at the
chip level.
SAE-AS4710; PI-Bus {Parallel Interface - Bus}. Similar to VME structure, uses BTL logic. Avionics Fault-tolerance bus (JAIWG) . Also called ~ Parallel Intermodule - Bus. Provides a 32 bit wide data bus, with a 50MBytes per second transfer rate. Uses a preemptive, priority-based protocol
Search Key Words: JIAWG: Joint Integrated Avionics Working
Group, ARINC: Aeronautical Radio Inc.,
ATA: Advanced Tactical Aircraft, ATF:Advanced Tactical
Fighter, National Semiconductor app note: AN-725
IEEE 1355.2: SpaceWire, based on the HIC (IEEE-1355) bus, and
Low Voltage Differential Signaling (EIA-644). Also controlled by the European
Space Agency, for the ECSS [European Cooperation for Space
Standardization].
ECSS-E-50-12 Defines the Mechanical, Electrical, and Protocol. At
data rate of 100Mbaud (min.) over a distance of 10 meters
SpaceWire Serial Point-to-Point Links ECSS-E-50-12; Draft Issue
C
SpaceWire Links, Nodes, Routers and Networks ECSS-E-50-12; Draft
Issue 2
The main SpaceWire page is now listed on the SpaceWire Avionics Bus page.
Avionics Full Duplex Switched Ethernet, AFDX Network
SAE AS4074.1 Linear Token Passing Multiplex Data Bus. HSDB;
High Speed Data Bus. A fiber optic bus operating at 80 Mbps. Serial
bus.
SAE AS4075 HSRB; High-Speed Ring Bus.
ASCB Avionics Standard Communications Bus. A high-speed, bi-directional digital data bus
CSCB Commercial Standard Communications Bus. A high-speed, bi-directional digital data bus
CSDB Commercial Standard Digital Bus. A Low-speed, bi-directional digital data bus based on RS-422 Bus.
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MIL-STD-1553 is a DOD Military
(MIL) Standard (STD), which defines both the Mechanical, Electrical, and
Functional characteristics. MIL 1553 uses a Balanced (Differential)
interface. The interface is dual redundant with between 2 and 32
interface devices on the bus. Communication over MIL-STD-1553 is
half-duplex at a speed of 1Mbps using 75 ohm copper wire cable. MIL-STD-1760 is a variant of the MIL-STD-1553 bus, primarily used with weapons buses on aircraft. It follows the normal 1553 protocol but certain messages require a Cyclical Redundancy Check (CRC) be used as the last word in the message. It also requires a header, to be used as the first word in messages to certain sub-addresses. MIL-STD-1397C Input/Output Interfaces, Standards Digital data, Navy Systems (NTDS: Naval Tactical Data System) MIL-STD-1773 This Web Site, or Buses / MIL-STD-1773
NATO calls MIL-STD-1773: STANAG 3996AVS; Now controlled by the SAE
as AS1773 MIL-STD-2204 This Web Site (FDDI), or Buses / FDDI / MIL-STD-2204 (SafeNet) Fibre Channel FC-AE This Web Site, Buses / Fibre Channel [Fiber Channel]
CANaerospace/AGATE databus is a 1Mbps two-wire bus used to
interconnect sensors and navigation systems for General Aviation [GA].
The AGATE databus is based on the CANbus. Additional Avionic buses: H009 bus, 16PP362A Weapons bus, EN 3910 - Fibre Optic Digital Time Division, Command / Response Multiplex Data Bus, STANAG 3838 AVS |
Engineering Design Key words: Avionic Buses, Bus Standard, Interface Standard Data Bus, Military Specification, MIL Spec, Interface, IC, Physical Interface, Description, Physical Interface, ARINC, MIL, Military, Defense, US, NATO, STANAG, ATR, Air, Aerospace, Aviation, Avionics, Aeronautical, Aircraft
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