A Brief History Of VME
VME Part 1
In 1979, Motorola in the development of its new Motorola 68000 CPU, and one of its engineers, Jack Kister, decided on the creation of a standardized bus system for 68000-based systems, which he described as VERSAbus. He was later by John Black, of the specifications and refined the concept VERSAmodule product. Sven Rau and Max Lösel of Motorola Europe a mechanical specifications for the system, basing it on the Eurocard standard, was then late in the Standardisevaluation. TDas result was first known as E-VERSAbus but was later renamed the VMEbus for VERSAmodule Eurocard bus (although some call it Versa Module Europe).
At this point, a number of other companies involved in the ecosystem, 68,000 agreed to use the standard, including Signetics, Philips, Thomson, and Mostek. Soon, it was officially standardized by the IEC as IEC-821-VMEbus and IEEE and ANSI as ANSI / IEEE 1014-1987.
The original Standard was a 16-bit bus, which in the existing Euro-Card DIN connectors. However, there were numerous updates to the system allow a wider bus widths. The current VME64 contains a full 64-bit bus at 6-DB-size maps and 32-bit cards in 3-DB. The VME64 protocol of a typical performance of 40 MB / s. Other standards have hot-swapping (Plug and Play) in VME64x, smaller “IP” cards that plug into a single VMEbus card and various interconnect standards for linking VME systems.
In the late 1990s, synchronous protocols proved to be effective. The research project was VME320. The VITA Standards Organization called for a new standard for unmodified VME32/64 backplanes. The new protocol has been approved in 2eSST ANSI / VITA 1.5 in 1999.
Over the years, many extensions have been added to the VME interface, providing ’sideband’ channels of communication in parallel to VME itself. Some examples are IP Module, RACEway Interlink, SCSA, Gigabit Ethernet on VME64x Backplanes, PCI Express, RapidIO, StarFabric and InfiniBand.
VMEbus was also closely in the development of standards, and VXIbus
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