l'interface de communication firewire ieee 1394

IEEE 1394 cable connectors are constructed with the electrical contacts inside the structure of the connector thus preventing any shock to the user or contamination to the contacts by the user’s hands. Its high-speed capability makes IEEE 1394 viable for connecting digital cameras, camcorders, printers, TVs, network cards and mass storage devices to a PC. A 1394b specification aims to adopt a different coding and data-transfer scheme that will scale to 800 Mbit/s, 1.6 Gbit/s and beyond. The backplane bus supports data-transfer speeds of 12.5, 25, or 50 Mbit/s, the cable interface speeds of 100, 200 and 400 Mbit/s – roughly four times as fast as a 100BaseT Ethernet connection and far faster than USB’s 1.5 Mbit/s or 12 Mbit/s speeds.

A simple bridge connects the two environments. There are two levels of interface in IEEE 1394, one for the backplane bus within the computer and another for the point-to-point interface between device and computer on the serial cable. Both are hot-swappable serial interfaces, but IEEE 1394 provides high-bandwidth, high-speed data transfers significantly in excess of what USB offers.

IEEE 1394 is similar to the first version of USB in many ways, but much faster.

Originally conceived by Apple, who currently receives $1 royalty per port, several leading IT companies – including Microsoft, Philips, National Semiconductor and Texas Instruments – have since joined the 1394 Trade Association. Also widely referred to as FireWire, IEEE 1394 was approved by the Institute of Electrical and Electronics Engineers (IEEE) in 1995.

L'interface de communication firewire ieee 1394