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IEEE
1394 High Performance Serial Bus, also known as Firewire , is a
versatile, high-speed, and low-cost method of transferring digital
data between personal computer peripherals and consumer electronics
devices. IEEE 1394 can transport data at 100/200/400 Mbps.
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- Digital
interface - no need to convert digital data into analog and
then digital again for processing, which will have a loss of
data integrity.
- Small
- thin serial cable will replace large and more expensive
interfaces.
- Easy
to use - no terminators, devices ID etc¡K
- Hot
pluggable for plug and play applications
- Cheap
- the high volume consumer market will achieve low-cost
implementation.
- Daisy
chain connection
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1.
Consumer electronics devices (up to 100 Mbps)
- Video
game devices
- Connect
conventional PC peripherals (e.g. fixed disk drives, printer
& scanner)
- Home
networks & PC peripheral component sharing.
- Second
generation DVD drives.
- Third
generation DTH (direct to home) satellite receivers.
- Cable
modem.
- Digital
audio tape (DAT) recorders.
2.
Prosumer electronic components (up to 200 Mbps)
- High-speed
keyboard synethesizer, sound modules and samplers.
- Digital
camcorders and VCRs.
- Fixed
and motorized digital video conferencing cameras.
3.
Professional and industrial market (up to 400Mbps)
- Substitute
for the 8-bit parallel bus of the IEEE 488 Standard Digital
interface for Programmable Instrumentation.
- Support
transmission of 10-bit uncompressed digital video and several
simultaneous channels of 16-bit, 48kHz stereo digital audio.
- High
definition (HD, 16:9) digital input TV set (221Mbps for 30
frames/sec, 640x480 pels & 24-bit color/pel)
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Cable Plug Connector
The
fully shielded connector will have six contacts. The contcat
design creates a Hertzian stress (combination of cylindrical
radius, normal force, base and surface material hardness) of
225,000 - 275,000 psi in the mating area. The connector plug
termination can be made by crimp, insulation displacement (ICD),
insulation piercing & soldering.
Cable
The
cable consists of two twisted pairs (signal pair) & two power
connectors. The signal pair carries the balanced differential data
signal, while the power conductors carries the bus power (about
8~40 VDC).
The
signal pair will have individual braid (60~65%) shield. The
overall cable has a outer shield (90~95% braid copper wire over
spiral wrap metallized polyester tape, with the metal to the
outside)
Cable Assembly
The
cable assembly consists of two identical plug connectors jointed
by a cable (Maximum length is 4.5m). When a cable assembly plug is
mated with a socket connector, there should be 1 mm (minimum)
clearance between overmold on the assembly plug & the shield
flange on the socket.
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Wire Structure:
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