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PMC/XMC Rear I/O Fabric Signal Mapping on 3U and 6U VPX Modules Standard ANSI ratified VITA 46.10 Rear Transition Module for VPX ANSI ratified VITA 46.11 System Management on VPX ANSI ratified VITA 46.12 Fiber Optic Interface on VPX Now VITA 66 VITA 46.13 Fiber Channel on VPX Planned VITA 46.20 Switch Slot Definition on VPX Draft VITA 46.21
Unibus was physically large, which led to the introduction of Q-bus, which multiplexed some signals to reduce pin count. Higher performance PDP systems used Fastbus, essentially two Unibusses in one. The system was later supplanted by Massbus, a dedicated I/O bus introduced on the VAX and late-model PDP-11s.
The original standard was a 16-bit bus, designed to fit within the existing Eurocard DIN connectors. However, there have been several updates to the system to allow wider bus widths. The current VME64 includes a full 64-bit bus in 6U-sized cards and 32-bit in 3U cards. The VME64 protocol has a typical performance of 40 MB/s. [3]
There are also some specifications for T&M-specific protocols over PC-standard I/O, such as HiSLIP [2] or VXI-11 [3] (over TCP/IP) and USBTMC [4] (over USB). The VISA library has standardized the presentation of its operations over several software reuse mechanisms, including through a C API exposed from Windows DLL , visa32.dll, over the ...
Industry Standard Architecture (ISA) is the 16-bit internal bus of IBM PC/AT and similar computers based on the Intel 80286 and its immediate successors during the 1980s. The bus was (largely) backward compatible with the 8-bit bus of the 8088-based IBM PC, including the IBM PC/XT as well as IBM PC compatibles.
A PCI-104 single-board computer. PC/104 (or PC104) is a family of embedded computer standards which define both form factors and computer buses by the PC/104 Consortium.Its name derives from the 104 pins on the interboard connector in the original PC/104 specification [1] [2] and has been retained in subsequent revisions, despite changes to connectors.
The PMC standard defines which connector pins are used for which PCI signals; in addition it defines the optional 64 "P4" connector pins for use of arbitrary I/O signals. It enables manufacturers to offer products that are compatible with the well-established PCI bus, but in a smaller and more robust package than standard PCI plug-in cards.
The RapidIO architecture is a high-performance packet-switched electrical connection technology. It supports messaging, read/write and cache coherency semantics. Based on industry-standard electrical specifications such as those for Ethernet, RapidIO can be used as a chip-to-chip, board-to-board, and chassis-to-chassis interconnect.