VPX

VPX, formerly known as VITA 46, is an ANSI standard (ANSI/VITA 46.0-2007) that provides VMEbus-based systems with support for switched fabrics over a new high speed connector. Defined by the VITA (VME International Trade Association) working group (composed of major companies such as Boeing, Curtiss-Wright, Elma Electronic, GE Intelligent Platforms, Kontron, Mercury Computer Systems and Northrop Grumman), it has been designed specifically with defense applications in mind, with an enhanced module standard that enables applications and platforms with superior performance. VPX retains VME's existing 6U and 3U Eurocard form factors, supporting existing PCI Mezzanine Card (PMC) and XMC mezzanines (PMC with high-speed serial fabric interconnect), and maintaining the maximum possible compatibility with VMEbus.

New generations of embedded computing systems based on the VPX standard reflect the growing significance of high speed serial switched fabric interconnects such as PCI Express, RapidIO, Infiniband and 10 Gigabit Ethernet. These technologies are replacing traditional parallel communications bus architectures for local communications, because they offer significantly greater capability. Switched fabrics technology supports the implementation of multiprocessing systems that require the fastest possible communications between multiple processors (e.g., digital signal processing applications). VPX gives the large existing base of VMEbus users access to these switched fabrics.

Technologies called for in VPX include:

  • Both 3U and 6U formats
  • New 7-row high speed connector rated up to 6.25 Gbit/s
  • Choice of high speed serial fabrics
  • PMC, FMC (VITA 57) and XMC (VITA 42) mezzanines
  • Hybrid backplanes to accommodate VME64, VXS and VPX boards

Read more about VPXSpecification, Connector, Power and Ruggedization, Products, OpenVPX, See Also

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