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EBX Specification {Embedded PC Mother Board form factor; 8.00" x 5.75", Is an Embedded computer board standard now supported by PICMG. The EBX form factor is used as a PC104 platform. EBX is not a bus standard, but a board standard.}

eDP Specification {Embedded DisplayPort}

EFM Specification {Ethernet in the First Mile.}

EFAbus Specification {Part of STANAG 3910, used in the Eurofighter. Similar to MIL1553}

EFEX Specification {EFABus-Express}

EGA {Enhanced Graphics Adapter: The EGA video standard offered improved resolutions and more colors than CGA. The monitors have a digital interface. OBSOLETE.}

EIA-232 Bus {RS232 serial bus has a maximum cable length of something less then 20 meters, and will operate up to 20kbps. Copper wire interface}

EIA-422 Bus {EIA422 [RS422] has a maximum cable length of 1200 meters at 200kbps over a balanced (differential) interface. Copper wire interface}

EIA-423 Bus {EIA423 [RS423] Bus Standard. Copper wire interface}

EIA-449 Cable Buses {EIA-449 Bus cabling interface. The maximum cable distance is 60 meters [2.1Mbps]. Copper wire interface}

EIA485 Bus {EIA485 [RS485] has a maximum cable length of 1200 meters at 200kbps over a balanced (differential) interface. Copper wire interface}

EIA-530 Cable Bus {Defines a cabling interface, Using EIA422 /EIA423 as it's electrical interface. The maximum cable distance is 60 meters [2.1Mbps]. Copper wire interface}

EIA-568 / EIA-569 Bus {Commercial Building Telecommunications Wiring Standard using 100 ohm Un-shielded Twisted Pair.}

EIA-644 Bus {Low Voltage Differential Signaling [LVDS] Wiring Standard. ANSI/TIA/EIA-644 only defines the Electrical layer so there is no pin-out provided by this specification. LVDS with CAT5 cable runs at 20 meters @ 100Mbps, 50 meters @ 50Mbps, 100 meters @ 10Mbps}

EIB {Element Interconnect Bus; The EIB is a communication bus internal to the Cell processor which connects the various on-chip system elements.}

EISA {Extended Industry Standard Architecture or Enhanced ISA bus: 8MHz @ 8/16/32 bits data bus, 32 bit address bus; PC Expansion Bus, compatible with ISA. An ISA card will work in a EISA slot, but an EISA card will not work in an AT slot. The EISA bus does not allow the board skirts common on XT cards. EISA cards are the same size as the AT cards. EISA is OBSOLETE, replaced by the PCI and AGP buses}

ETM-Bus {Element Test and Maintenance Bus; Sychronous serial path for test and maintenance control and data information at the ETM-Bus chip level, single VLSI IC interfacing for on-chip self test (BIST)}

Embedded PCI-X Specification [ePCI-X], The PICMG 1.2 specification defines the mechanical and electrical interface to support a standard form factor PCI computer system with either two PCI/PCI-X busses or a single PCI/PCI-X bus. The document also defines the electrical and mechanical connections for a single board computer and backplane. This is an upgrade to the PCI-ISA specification. PCI-X capabilities are added to the PCI bus and the ISA bus is replaced by a second PCI-X bus, on the PCI-ISA backplane. The board retains the same mechanical dimensions as PCI-ISA but the components move to the PCI side and the slot occupies a PCI position on a backplane. Also refer to the PCI-ISA listing, or the PCI listing}

EMIF; (External Memory Interface) A 16-bit IC bus used on DSP's from TI for asynchronous data transfers to memory or other devices.

ESCON; (Enterprise Systems CONnection) A proprietary IBM bus used to connect their mainframe computers to peripheral devices such as disk storage and tape drives. ESCON is an optical fiber, half-duplex, serial interface. The ESCON interface operates at a rate of 17Mbyte/s over a maximum distance is 43 kilometers [original transfer rate, 10 Mbyte/s].

ESDI; (Enhanced Small Device Interface) A 20M Byte hard drive interface that pre-dated ATA. OBSOLETE interface bus.

EPIC; (Embedded Platform for Industrial Computing) with a form factor of: 4.5" x 6.5". EPIC is smaller then the EBX standard. EPIC is an embedded SBC format which also supports PC/104 modules.

Ethernet Bus {Ethernet Bus Standard-IC Links}

ETX; {Embedded Technology eXtended, with a form factor of: 95mm x 111.6mm (5.75 x 8 inches). Is an Embedded computer board standard supported by PICMG.}

EVC [Enhanced Video Connector] {Connector pin-out and signal names}

An alphabetic listing of released interface buses. Primarily the links point to pages that describe the physical and electrical interfaces. Interface Bus protocols are not addressed.