Description
   The Agere Systems Inc. FW803 device provides the analog physical layer functions needed to implement a three-port node in a cable-based IEEE 1394-1995 and IEEE 1394a-2000 network.

Distinguishing Features
◾ Compliant with IEEE P1394a Draft 2.0 Standard
   for a High Performance Serial Bus (Supplement)
◾ Supports extended BIAS_HANDSHAKE time for
   enhanced interoperability with camcorders.
◾ While unpowered and connected to the bus, will not
   drive TPBIAS on a connected port even if receiving
   incoming bias voltage on that port.
◾ Does not require external filter capacitors for PLL.
◾ Does not require a separate 5 V supply for 5 V link
   controller interoperability.
◾ Interoperable across 1394 cable with 1394 physical
   layers (PHY) using 5 V supplies.
◾ Interoperable with 1394 link-layer controllers using
   5 V supplies.
◾ Powerdown features to conserve energy in battery
   powered applications include:
   — Device powerdown pin.
   — Link interface disable using LPS.
   — Inactive ports power down.
◾ Interface to link-layer controller supports Annex J
   electrical isolation as well as bus-keeper isolation.