Ieee 1394, Parity bit – AOpen AK77-600N User Manual
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IEEE 1394, which also called Firewire, is a serial data transfer protocol and interconnection system. The main feature of the
Firewire that assures its adoption for the digital video and audio (A/V) consumer application is its low cost. Fire wire interface is
capable of supporting various high-end digital A/V applications, such as consumer A/V device control and signal routing, Digital
Video (DV) editing, home networking, and more than 32 channels of digital mixing. Gone are those days of expensive video
capture cards. Firewire allows for video capture from both newer DV camcorders with Firewire ports and older analog
equipment using A/V to Firewire converters.
The advantages of the IEEE1394:
High data transfer rate – Start from 400 Mbps, (with 800/1600/3200 Mbps coming soon), which is about 30 times faster than
USB 1.1.
Supports up to 63 devices (16 - daisy chained) with cable length up to about 4.5 m (14 feet).
Hot-pluggable (like USB). No need to turn of your device to connect or disconnect, and you don't need to reboot your PC. Also,
it is a plug-and-play bus.
IEEE1394 is very easy to connect (Like USB1.1/2/0).
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The parity mode uses 1 parity bit for each byte, normally it is even parity mode, that is, each time the memory data is updated,
parity bit will be adjusted to have even count "1" for each byte. When next time, if memory is read with odd number of "1", the
parity error is occurred and this is called single bit error detection.