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SpaceWire and IEEE 1355
Network technology from 4Links offers spectacular benefits.
Bandwidth, already 200Mbits/s in each direction per link in our
products, can be increased just by adding extra links. Redundant
paths can be connected to give fault-tolerance, and many concurrent
communications at the same time means less interference and
improved response compared with bus-based systems. The
scalability, robustness and responsiveness are ideal for the space
industry and SpaceWire is being used on an increasing number of
science and commercial missions.
4Links products
4Links supplies a range of interface products, packet routing
switches, intellectual property, software and development tools for
SpaceWire and IEEE 1355.
Interfaces to SpaceWire and IEEE 1355 include PCI, Compact PCI,
RS232, USB and Video (CCIR 601/656, PAL/NTSC, camera and
display), with Ethernet and CardBus in development.
Packet routing switches include a 4-port boxed router and an 8-port
PCB reference design of a router with an internal bandwidth of
4Gbits/s.
Intellectual property includes a variety of SpaceWire and IEEE 1355
macrocells, all the interfaces, packet routing switches with any
number of ports, and the network management system we have
developed for SpaceWire. While 4Links board products are restricted
to ground segment use, IP is offered for flight use either in FPGA or
ASIC.
4Links consultancy and collaboration
With a wide range of IP already developed for SpaceWire, 4Links can
be highly effective in adapting this IP to particular customer
requirements. We have developed a number of PCB designs under
consultancy contracts, and, as well as patenting inventions
ourselves, have made inventions that clients are patenting. We are
particularly interested in consultancy work on the "Rad-Hard by
Design" and the fault tolerance capabilities of SpaceWire. Also in
work that extends the application space of SpaceWire, provides
bridges to other standards such as CAN and 1553, and that evolves
the standard to higher speeds and lighter cable mass.
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