High Performance Serial Bus


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High Performance Serial Bus

(bus, standard)
(Or "IEEE 1394", "FireWire", "I-Link") A 1995 Macintosh/IBM PC serial bus interface standard offering high-speed communications and isochronous real-time data services.

1394 can transfer data between a computer and its peripherals at 100, 200, or 400 Mbps, with a planed increase to 2 Gbps. Cable length is limited to 4.5 m but up to 16 cables can be daisy-chained yielding a total length of 72 m.

It can daisy-chain together up to 63 peripherals in a tree-like structure (as opposed to SCSI's linear structure). It allows peer-to-peer device communication, such as communication between a scanner and a printer, to take place without using system memory or the CPU. It is designed to support plug-and-play and hot swapping. Its six-wire cable is not only more convenient than SCSI cables but can supply up to 60 watts of power, allowing low-consumption devices to operate without a separate power cord.

Some expensive camcorders have included this bus since Autumn 1995. It is expected to be used to carry SCSI, with possible application to home automation using repeaters.

See also Universal Serial Bus, FC-AL.
References in periodicals archive ?
The synthesizable Verilog core includes hardware support for IEC 61883 specifications - a widely agreed upon transmission protocol for transferring audio-video data and control commands over the IEEE 1394 high performance serial bus.
Device Bay would use the existing, complementary industry interfaces of Universal Serial Bus (USB) and IEEE 1394 High Performance Serial Bus.
With the participation of these leading personal computer manufacturers, the 1394 High Performance Serial Bus is the ideal multi-platform personal computer bus bridge for traditional PC peripherals as well as the new emerging digital audio/video consumer devices.

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