IEEE 1394c:2006

Amendment Standard - Superseded.
Supplemental Information for a high-speed serial bus that integrates well with most IEEE standard 32-bit and 64-bit parallel buses is specified. It is intended to extend the usefulness of a low-cost interconnect between external peripherals. This standard follows the IEEE Std 1212-2001 command and status register (CSR) architecture. Remarks: Amendment to IEEE Std 1394-1995 including IEEE Std 1394a-2000 and IEEE Std 1394b-2002

This is a full-use standard whose scope is to amend the IEEE 1394 base standard (IEEE Std 1394-1995 as amended by IEEE Std 1394a-2000 and IEEE Std 1394b-2002) to specify alternate physical layer(s) that provide greater than S100 data rate over CAT5 or better cable. This physical layer is capable of negotiating with a peer device to select the appropriate next higher protocol layer.
Technology advances have made gigabit signaling over unshielded twisted-pair cables a feasible and attractive extension to IEEE 1394. This will allow S800 (and possibly higher) video and audio networks to be built with a CAT5 (or better) unshielded twisted pair cable plant instead of optical fiber. A negotiation method will be defined to allow peer devices to select the appropriate connection supported at both ends.