Firewire (also called IEEE 1394) is another popular connector for adding peripherals to your computer. Firewire is most often used to connect digital camcorders, external hard drives, and other devices that can benefit from the high transfer rates (up to 480 Mbps) supported by the Firewire connection.

1. FIRE WIRE
…. ….Computer Interface course Dr/Tamer Ahmed Mostafa

2. Mirna Ayman
Naden Alaa
Menna Mohamed
Ibrahim Hassan
Mohamed Ashraf

3. Agenda
01 INTRODUCTION
02 HISTORY AND DEVELOPMENT
03 FIREWIRE SPECIFICATIONS
04 FIREWIRE VS. USB
05 REFERENCES

4. Introduction
FireWire is a high-speed serial input/output (I/O) technoloy
for connecting peripheral devices to a computer or to each
other. It is one of the fastest peripheral standards ever
developed and now, at 800 mbps ,it is even faster.
can you use FireWire for Mass storage,Digital video, audio,
Digital still cameras,Printers and scanners and Networking.

5. History
Apple intended FireWire to be a serial replacement for the parallel SCSI (Small
Computer System Interface) bus while also providing connectivity for digital
audio and video equipment.
Apple's development of the original IEEE 1394 was completed in 1995
It was followed by several modifications : The IEEE Std. 1394a2000,
the IEEE Std. 1394b2002,and the IEEE Std. 1394c2006 amendment.

6. FireWire Specification
FireWire allows for plug-and-play connection of peripheral devices. You don’t need
to install drivers, assign unique ID numbers, or connect terminators.
You can connect a few devices in a simple chain or add hubs to attach as many as
63 devices to a single FireWire bus.
You can connect a few devices in a simple chain or add hubs to attach as many as
63 devices to a single FireWire bus
Plug-and-Play Connectivity

7. FireWire Specification (cont.)
At first, a data to be sent and received successfully determine which device gets to
transmit when. Otherwise, the data packets would collide and reduce the data
transfer rate.
Then, in FireWire 400, arbitration is performed after each transaction, so there ís a
delay before a device wins the arbitration and is allowed to start sending its data
Finally, in FireWire 800, the arbitration for the next transaction is done while the cur
rent data packet is being sent. This way, the device chosen by the arbitration is read
y to send its data as soon as the current transmission is completed
Highly Efficient Architecture

8. FireWire Specification (cont.)
Compatibility with Current FireWire Products

9. FireWire VS USB
FireWire and USB have both found their place in the computer and consumer
electronics industries. USB is the technology of choice for most computer mice
keyboards, and other lower-bandwidth input devices.
FireWire with its higher bandwidth, longer distances, and much higher-powered
bus is more suitable for devices such as highspeed external disk drives, digital
video (DV), professional audio, high-end digital still cameras, and home enterta
inment components.
FireWire is More Advanced Than USB 2.0

10. FireWire VS USB (cont.)
Unlike many other data transfer technologies, FireWire can guarantee real-
time delivery of data. This is critical for streaming media applications such
as audio and video, where delayed or out-of-order frames are unacceptable
The data traffic between FireWire nodes is divided into isochronous and
asynchronous transfers. Isochronous transfers provide guaranteed transmis
sion opportunities at defined intervals; if a packet is not received successfully
, it is not resent. In asynchronous transfers, the intervals between
transmissions can vary, and data can be resent if it ís missed.
Real-Time Data Delivery

11. FireWire VS USB (cont.)
FireWire 800 provides significant amounts of power on its bus (up to 45 wa
tts, with a maximum of 1.5 amps and 30 volts). This means that many devic
es can be powered through the FireWire cable and will not need their own p
ower cables and adapters.
For example, Appleís iPod digital music player uses FireWire as its sole data
and power connection. The player can recharge its built-in battery while itís d
ownloading new music from your computer.
On-Bus Power

12. • FireWire VS USB (cont.)
Summary

13. • Don Anderson, “Firewire System Architecture”
, 2nd Ed. IEEE 1394a, Addison Wisley,1999.
• https://en.wikipedia.org/wiki/IEEE_1394
References

14. Any Questions about the previous slides?

15. Let’s Practice
Q&A
- what is FireWire ?
- Is FireWire is better than USB? Why?
- what is the difference between FireWire and
USB?
- List a couple of advantages and disadvantages
of FireWire .
- Mention some application that uses FireWire .

16. Thank you