|[May 27, 2014]
1394 Trade Association Teams with Aerospace Systems Suppliers to Expand FireWire's Role in Avionics
SAN FRANCISCO --(Business Wire)--
The 1394 Trade Association is working closely with leading aerospace and
aviation suppliers to expand and enhance the rapidly growing role of the
IEEE1394 standard in next-generation avionics systems.
The AS-1A3 MIL-1394 Task Group met in Santa Barbara in April to continue
their work on AS5643, AS5643/1, AS5657, AS5706 and ARP5654 along with
new developments such as S100 and S200 slash sheets, gigabit copper and
optical fiber implementations. Companies such as BAE, Boeing (News - Alert),
DapTechnology, Lockheed Martin, Northrop Grumman and many others are
driving the advancement of these standards.
The most notable program using MIL-1394 is the F-35 and its use of S400
(491.52Mb/s), which drove the development of the AS5643/1 S400 copper
slash sheet. Other programs require less bandwidth and longer distances,
and will benefit from the creation of S100 and S200 sheets. Availability
of detailed technical data will allow designers to adapt slower speed
versions for applications that do not require maximum bandwidth, said
Richard Mourn of DapTechnology B.V., chairman of the 1394 Trade
Association and vice chair of the SAE AS-1A3 MIL-1394 Task Group.
Noise immunity and longer distances also are expanding the need for
optical fiber implementations.The ARP5654 handbook is being updated, as
the past 10 years of experience using MIL-1394 on multiple programs has
provided a repository of information and knowledge that is being shared
to benefit new programs that implement MIL-1394.
AS5643 and the associated standards define the use of IEEE (News - Alert)-1394b-2002 as
a data bus network in military and aerospace vehicles (MIL-1394).
Together AS5643 and IEEE-1394 deliver a flexible deterministic solution
for aerospace and defense applications.
"While high speed 1394 versions have been widely adopted and proven in
many avionics systems, we have found that several suppliers can be
productive and efficient with slower speed versions," said Mourn. "We
are supporting those efforts now and working closely with the developers
to provide the exact technology they require."
IEEE-1394 was first standardized in 1995. Major updates were completed
in 2000, 2002, and in 2008 (IEEE-1394-2008). IEEE-1394-2008 Beta refined
and extended IEEE-1394b-2002. It defines operation from S100 (98.304
Mb/s) to S3200 (3.932 Gb/s). Given this wide range of throughput
options, 1394 is suitable for vehicle management and avionic and mission
system networks including Electro-Optic/Infrared (EO/IR) sensor
interfaces. Many of the upcoming system designs combine the AS5643
standard with 1394. AS5643 takes advantage of a 1394-2008 beta feature -
looped topologies. 1394-2008 beta supports point-to-point, daisy chain,
treed and multiple loop topologies. AS5643 recommends using loops to
create a first level of topology fault tolerance, then defines a second
level using double or even triple redundant networks. In addition to
fault tolerance through the network architecture, 1394-defined header
and data cyclic redundancy check (CRC) and AS5643-defined vertical
parity check (VPC) provide bus level and application level error
Mourn is an industry veteran who is currently Director of Systems
Engineering at DapTechnology B.V., an international developer of test
and measurement systems and products. He is a long time member of the
1394 Trade Association board of directors.
For more information visit www.1394ta.org.
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