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Backplane Bus / Standard:
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Your choices are...
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ISA / EISA
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Industry standard architecture (ISA) is a standard for I/O buses that was developed in the 1980s. ISA buses can handle 16-bit data transfers at a clock speed of 8 MHz. They are also capable of handling memory under 16 MB. EISA, or Extended ISA, is an enhanced version of the ISA bus. EISA buses run at 8 MHz, are capable of 32-bit data transfers, and can access all memory in the system.
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PCI
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Peripheral component interconnect (PCI) is a local bus system designed for high-end computer systems. PCI buses transfer 32 or 64 bits of data at a clock speed of 33 MHz. They also support 3 to 5 critical peripherals, which are either integrated directly onto the motherboard or added via expansion cards. PCI buses fully support cards that were developed for standard I/O buses.
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PISA
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PISA buses can carry ISA / EISA and PCI bus signals. They use the same type of connectors as EISA buses, but require fewer pins than full PCI connectors. PISA buses have the same dimensions as ISA buses, but are smaller than typical PCI buses. An industrial single-board computer (SBC) with a PISA edge connector can, with a suitable backplane, connect to both ISA and PCI cards in the same system.
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CompactPCI
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Compact PCI (cPCI) is a high-performance industrial bus that uses the electrical standards of the PCI bus and is packaged in a Eurocard. Specifications for the CompactPCI bus are developed and maintained by the PCI Industrial Computers Manufacturers Group (PICMG). cPCI buses are used extensively in systems that require high speed data transfers. Examples include data communication routers and switches, real-time machine control, real-time data acquisition, military systems, etc.
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PXI
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PCI eXtensions for Instrumentation (PXI) is a superset of CompactPCI that adds timing and triggering functions, imposes requirements for documenting environmental tests, and establishes a standard Windows-based software framework.
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VME
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VersaModule Eurocard (VME) is a rugged, 32-bit bus used in industrial, commercial and military applications. Several VMEbus varieties are available.
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VME64
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VME64 is an expanded version of the VME bus that provides 64-bit data transfers and addressing. VME64 is a mechanical and electrical superset of the original VME specification (IEEE-1014-1987). Features include asynchronous transfers, an addressing range between 16 and 40 bits, data path widths between 8 and 64 bits, and a bandwidth of 80 MBps.
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VME64x
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VME64 extended (VME64x) is an improved version of the VME64 bus that features a 160-pin connector family, 3.3 V power supply pins, bandwidths up to 160 MBps, injector/ejector locking handles and hot swap capability. The VME64x specifications were adopted in 1997 by the VMEbus International Trade Association (VITA) and its standards organization (VSO).
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VXI / VMI
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VME eXtensions for Instrumentation (VXI) was developed by Motorola and other companies in the late 1970s. VXI is a standard for many electronic platforms and defines electrical and mechanical backplane characteristics.
Multisystem eXtension Interface (MXI) is a high-performance communication link that interconnects devices using a flexible cabling scheme. MXI is a general purpose, 32-bit multi-master system bus on a cable. It provides a high-performance way of controlling VXI systems using commercially available desktop computers and workstations. MXI devices can directly access each other's resources by performing simple read and write operations to appropriate address locations. The MXI-2 standard expands the number of signals on a standard MXI cable by exporting all VXI backplane signals such as VXI triggers, interrupt lines and system clocks directly to the cabled bus.
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VME320
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VME320 is a modified VMEbus that provides synchronous data transmission and a bandwidth range from 320 MBps to over 500 MBps.
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STD 32
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The STD 32 bus was originally designed for factory and industrial environments. It combines a small, industrial strength architecture with the functionality and performance of high-end personal computers. As its name suggests, STD 32 uses a 32-bit architecture. It is well-suited for embedded industrial applications.
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AdvancedTCA
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Advanced Telecommunication Computing Architechture (AdvancedTCA) is an open industry specification for carrier grade equipment incorporating high-speed switching fabric technology capable of switching and processing 2.5 terabits per second in a single shelf.
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ETX
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Embedded technology eXtended (ETX) modules are very compact (~100mm square, 12mm thick), highly integrated computers. All ETX modules feature a standardized form factor and a standardized connector layout that carry a specified set of signals. ETX modules include common personal computer (PC) peripheral functions such as graphics; parallel, serial, and USB ports; keyboard/mouse; ethernet; sound and IDE.
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ePCI-X
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Embedded PCI eXtended (ePCI-X).
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HMP
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Host media processing (HMP) performs the media processing functions of communications applications without special-purpose telephony hardware. With HMP, toll-grade audio is transported as voice over IP (VoIP) through the Ethernet network interface. All media processing occurs in the host CPU.
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Other
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Other unlisted bus types.
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Search Logic:
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All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Backplane Form Factor
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The dimensions of the different form factors are shown in the table at the end of this help page.
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Your choices are...
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Baby AT
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Baby AT is the original IBM motherboard design for PCs. Boards can be up to 8.57" wide by 13.04" deep.
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AT
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This full-size AT motherboard has the same design as the original IBM AT (Baby AT). Boards can be up to 12" wide by 13.8" deep.
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LPX
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LPX was developed by Western Digital in 1987and has several important features, the most distinctive of which is that expansion slots are mounted on a bus riser that connects to the motherboard. Another important feature is the standard placement of connectors in the back of the card. LPX cards are 9” wide and up to 13” deep.
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ATX
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ATX combines the best features of the Baby AT and LPX motherboard designs with some new enhancements. The ATX open specifications were released in 1996. ATX cards are 12" inches wide and 9.6" deep.
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NLX
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NLX is the latest development in desktop motherboard technology. It supports current processor technologies and supports emerging technologies such as AGP, USB, DIMM, etc. NLX cards can by up to 9" wide and up to 13.6" deep.
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MicroATX
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MicroATX is a modified ATX in which three slots are removed to reduce the the board size to Baby AT (~8.5 in²).
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FlexATX
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FlexATX is a new standard introduced by Intel as a replacement for MicroATX. FlexATX has a maximum size of 9" by 7.5".
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3U (Size A)
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Size A cards have a height of 100 mm (3U) and a length of 160 mm.
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6U (Size B)
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Size B cards have a height of 233 mm (6U) and a length of 160 mm.
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6U (Size C)
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Size C cards have a height of 233 mm (6U) and a length of 340 mm.
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9U (Size D)
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Size D cards have a height of 360 mm (9U) and a length of 340 mm.
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Other
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Other unlisted form factors such as EBX, PC-104, etc.
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Search Logic:
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All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Tables:
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Form Factors
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| Type | Width | Height | | Full AT | 12 in | 304.8 mm | 11 - 13 in | 279.4 - 330.2 mm | | Baby AT | 8.5 in | 215.9 mm | 10 - 13 in | 254 - 330.2 mm | | ATX | 12 in | 304.8 mm | 9.6 in | 243.84 mm | | Mini ATX | 11.2 in | 284.48 mm | 8.2 in | 208.28 mm | | LPX | 9 in | 228.6 mm | 11 - 13 in | 279.4 - 330.2 mm | | Mini LPX | 8 - 9 in | 203.2 - 228.6 mm | 10 - 11 in | 254 - 279.4 - | | NLX | 8 - 9 in | 203.2 - 228.6 mm | 10 - 13.6 in | 254 - 345.44 mm | | 3U (Size A) | 6.30 in | 160 mm | 3.94 in | 100 mm | | 6U (Size B) | 6.30 in | 160 mm | 9.17 in | 233 mm | | 6U (Size C) | 13.39 in | 340 mm | 9.17 in | 233 mm | | 9U (Size D) | 13.39 in | 340 mm | 14.17 in | 360 mm | | |
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