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ความเห็นเพิ่มเติมที่ 1 4 ม.ค. 2549 (12:04)
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ความเห็นเพิ่มเติมที่ 2 4 ม.ค. 2549 (12:11)
เริ่มเลยนะคะ
Device Driver FireWire
FireWire is one of the fastest peripheral standards ever developed, which makes it great for use with multimedia peripherals such as digital video cameras and other high-speed devices like the latest hard disk drives and printers.
FireWire is integrated into Power Macs, iMacs, eMacs, PowerBooks, iBooks, and the iPod. FireWire ports were also integrated into many other computer products dating back to the Power Macintosh G3 "Blue & White" computers. All these machines include FireWire ports that operate at up to 400 megabits per second and the latest machines include FireWire ports that support 1394b and operate at up to 800 megabits per second.
FireWire is a cross-platform implementation of the high-speed serial data bus -- defined by the IEEE 1394-1995, IEEE 1394a-2000, and IEEE 1394b standards -- that can move large amounts of data between computers and peripheral devices. It features simplified cabling, hot swapping, and transfer speeds of up to 800 megabits per second (on machines that support 1394b).
Major manufacturers of multimedia devices have been adopting the FireWire technology, and for good reason. FireWire speeds up the movement of multimedia data and large files and enables easy connection of digital consumer products -- including digital camcorders, digital video tapes, digital video disks, set-top boxes, and music systems -- directly to a personal computer.
In fact, Apple\'s FireWire technology was honored by the Academy of Television Arts & Sciences, receiving a 2001 Primetime Emmy Engineering Award for FireWire\'s impact on the television industry.
For general developer FireWire questions send email to firewire@apple.com. This email address is not for technical or customer support.
FireWire Articles

ความเห็นเพิ่มเติมที่ 3 4 ม.ค. 2549 (12:11)
IP over FireWire
IP over FireWire adds support for using the Internet Protocol - commonly known as TCP/IP - over FireWire.
Related Links
FireWire Reference Platform
Now device manufacturers and developers interested in creating FireWire devices can take advantage of the FireWire Reference Platform 1.1. This stack contains core source and sample code, and is distributed under an evaluation license. This new version of FireWire Reference Platform 1.1 adds the Class Service EIA775. All other corrections are found in comment fields only
FireWire Reference Platform and License Available
The Implementation License for the FireWire Reference Platform 1.1 has been posted. (The platform, which contains the Core Source and Sample Code, is available for download through an evaluation license.) If after evaluation, you\'d like to obtain the license to develop or distribute assemblies incorporating the FireWire Reference Platform or modifications, please follow the Implementation License instructions.
Apple Hardware Products
Apple\'s Hardware page with links to all Apple Hardware Product pages.
FireWire Peripherals
The complete listing of FireWire Peripherals listed in the Macintosh Products Guide.
1394 Trade Association
The 1394 Trade Association supports the development of computer and consumer electronics systems that can be easily connected with each other via IEEE 1394 (FireWire). The 1394TA has also published a number of specifications for FireWire devices that are available to 1394TA members.
Leitch Technology Corporation
Leitch Technology is a global leader in the design, development and distribution of high-performance video systems for the professional television industry.
Pinnacle Systems
Pinnacle Systems provides audio and video hardware and software to create, enhance and share video.
In a snap, you can now add digital camcorders, high-speed storage devices, scanners, CD-RW drives, and much more to your desktop or notebook computer. Adaptec FireWire/1394/i.LINK products bring you all the advantages of this exciting peripheral connectivity standard with easy-to-use plug-in cards and great software for a fantastic value.

ความเห็นเพิ่มเติมที่ 4 4 ม.ค. 2549 (12:11)
ตัวอย่าง FireWire

FireWire 1394 Adaptors
Adaptec FireConnect Plus - 3-port FireWire Card with DVD/CD-burning software
Adaptec FireConnect 8300 Kit - Two FireWire 800 ports and one FireWire 400 port
Adaptec FireConnect 4300 - 3-port, 400 Mbit/sec FireWire®/1394 host adapter for PCs and Macs®
Adaptec DVpics Plus - A complete kit for making great movies on DVD in a sn
Adaptec FireConnect for Notebooks - 3-port FireWire® CardBus
Compare these products




FireWire & USB Combo Cards
DuoConnect for Notebooks -
2-port USB 2.0 and 1-port FireWire combination card for Laptop PCs
DuoConnect for Notebooks 1422 -
2-port USB 2.0 and 2-port FireWire combination card for Laptop PCs
Adaptec DuoConnect - 3-port USB 2.0 and 2-port FireWire combination card for PCs and Macs
Compare these products

ความเห็นเพิ่มเติมที่ 5 4 ม.ค. 2549 (12:12)
ประวัติของ Firewire
This site is devoted to DV (and its related formats - DVCAM, DVCPRO, etc.) and FireWire (also known as IEEE-1394). DV is a digital video format, supported by a consortium of over 50 companies. FireWire™ is a serial data transfer protocol and interconnection system, used (amongst other things) to transmit DV. FireWire was originally developed by Apple Computer. In 1995, FireWire was standardized by the Institute of Electrical and Electronic Engineers as IEEE 1394-1995. 1394 Trade Association maintains extensive amount of information on IEEE-1394.
This site is maintained by Bertel Schmitt and Alexei Gerulaitis.
FireWire
From Wikipedia, the free encyclopedia.
Jump to: navigation, search


A 6-Pin FireWire 400 connector
FireWire (also known as i.Link or IEEE 1394) is a personal computer and digital audio/video serial bus interface standard offering high-speed communications and isochronous real-time data services. FireWire can be considered a successor technology to the obsolescent SCSI Parallel Interface. Up to 63 devices can be daisy-chained to one FireWire port.
Almost all modern digital camcorders have included this connection since 1995. All Macintosh computers currently produced have built-in FireWire ports, as do all Sony PCs and many PCs intended for home or professional audio/video use. FireWire was also used on the Apple iPod for a long time, permitting new tracks to be uploaded in a few seconds and also for the battery to be recharged concurrently with one cable, but newer models, like the iPod nano and the new fifth generation iPod, do not work with a Firewire connection (only USB 2 is now supported).

ความเห็นเพิ่มเติมที่ 6 4 ม.ค. 2549 (12:16)
Contents
[hide]
• 1 Standards and versions
• 2 Networking over FireWire
• 3 Security issues
• 4 Node hierarchy
• 5 Hot swap dangers
• 6 History
• 7 See also
• 8 External links
• 9 References

ความเห็นเพิ่มเติมที่ 7 4 ม.ค. 2549 (12:17)
Standards and versions

FireWire was developed by Apple Computer in the 1990s, after work defining a slower version of the interface by the IEEE 1394 working committee in the 1980s. IEEE proposed the standard as a serial replacement for the SCSI bus. Apple\'s development was completed in 1995. It is defined in IEEE standard 1394 which is currently a composite of three documents: the original IEEE Std. 1394-1995, the IEEE Std. 1394a-2000 amendment, and the IEEE Std. 1394b-2002 amendment. Sony\'s implementation of the system is known as i.Link, and uses only the four signal pins, discarding the two pins that provide power to the device in favor of a separate power connector on Sony\'s i.Link products.
The system is commonly used for connection of data storage devices and digital video cameras, but is also popular in industrial systems for machine vision and professional audio systems. It is used instead of the more common USB due to its faster effective speed, higher power distribution capabilities, and because it does not need a computer host. Perhaps more importantly, FireWire makes full use of all SCSI capabilities and, compared to USB 2.0 High Speed, has higher sustained data transfer rates, a feature especially important for audio and video editors.
However, the small royalty that Apple Computer and other patent holders have initially demanded from users of FireWire ($0.25 per end-user system) and the more expensive hardware needed to implement it ($1–$2) has prevented FireWire from displacing USB in low-end mass-market computer peripherals where cost of product is a major constraint.

ความเห็นเพิ่มเติมที่ 8 4 ม.ค. 2549 (12:17)
A 4-Pin FireWire 400 connector. This connector is not powered.
FireWire can connect together up to 63 peripherals in an acyclic network structure (hubs, as opposed to SCSI\'s linear structure). It allows peer-to-peer device communication, such as communication between a scanner and a printer, to take place without using system memory or the CPU. FireWire also supports multiple hosts per bus. USB requires a special chipset to perform the same function, effectively resulting in the need for a unique and expensive cable, whereas FireWire requires only a cable with the correct number of pins on either end - (normally 6). It is designed to support plug-and-play and hot swapping. Its six-wire cable is not only more convenient than SCSI cables but can supply up to 45 watts of power per port, allowing moderate-consumption devices to operate without a separate power cord. The Sony-branded i.Link usually omits the power part of the cable/connector system and only uses a 4-pin connector.
FireWire 400 can transfer data between devices at 100, 200, or 400 Mbit/s data rates (actually 98.304, 196.608, or 393.216 Mbit/s, but commonly referred to as S100, S200, and S400). Although USB2 claims to be capable of higher speeds (480mb/s), FireWire is, in practice, faster. Cable length is limited to 4.5 metres but up to 16 cables can be daisy chained yielding a total length of 72 meters under the specification.
FireWire 800 (Apple\'s name for the 9-pin "S800 bilingual" version of the IEEE1394b standard) was introduced commercially by Apple in 2003. This newer 1394 specification and corresponding products allow a transfer rate of 786.432 Mbit/s with backwards compatibility to the slower rates and 6-pin connectors of FireWire 400.

ความเห็นเพิ่มเติมที่ 9 4 ม.ค. 2549 (12:17)
A 9-Pin FireWire 800 connector
The full IEEE 1394b specification supports optical connections up to 100 metres in length and data rates all the way to 3.2 Gbit/s. Standard category-5 unshielded twisted pair supports 100 metres at S100, and the new p1394c technology goes all the way to S800. The original 1394 and 1394a standards used data/strobe (D/S) encoding (called legacy mode) on the signal wires, while 1394b adds a data encoding scheme called 8B10B (also referred to as beta mode). With this new technology, FireWire, which was arguably already slightly faster, is now substantially faster than Hi-Speed USB.
FireWire devices implement the ISO/IEC 13213 "configuration ROM" model for device configuration and identification, to provide plug-and-play capability. All FireWire devices are identified by an IEEE EUI-64 unique identifier (an extension of the 48-bit Ethernet MAC address format) in addition to well-known codes indicating the type of device and protocols it supports.
Networking over FireWire
FireWire, with the help of software, is perfect for creating ad-hoc (terminals only, no routers) networks.
Linux, Windows XP and Mac OS X are popular operating systems that include support for networking over FireWire. A network between two computers can be created without a hub, much like the scanner to printer example above. Using one FireWire cable, data can be transferred quickly between the two computers with minimal networking configuration.
Security issues
Devices on a FireWire bus can communicate by direct memory access, where a device can use hardware to map internal memory to FireWire\'s "Physical Memory Space". The SBP (serial bus protocol) used by FireWire disk drives use this capability to minimize interrupts and buffer copies. In SBP, the initiator (controlling device) sends a request by remotely writing a command into a specified area of the target\'s FireWire address space. This command usually includes buffer addresses in the initiator\'s FireWire "Physical Address Space", which the target is supposed to use for moving I/O data to and from the initiator.
On many implementations, particularly those like PCs and Macintoshes using the popular OHCI interface, the mapping between the FireWire "Physical Memory Space" and device physical memory is done in hardware, without operating-system intervention. While this enables extremely high-speed and low-latency communication between data sources and sinks without unnecessary copying (such as between a video camera and a software video recording application, or between a disk drive and the application buffers), this can also be a security risk if untrustworthy devices are attached to the bus. For this reason, high-security installations will typically either purchase newer machines that map a virtual memory space to the FireWire "Physical Memory Space" (such as a G5 Macintosh, or any Sun workstation), disable the OHCI hardware mapping between FireWire and device memory, physically disable the entire FireWire interface, or do not have FireWire at all.
This feature can also be used to debug a machine whose operating system has crashed, and in some systems for remote-console operations

ความเห็นเพิ่มเติมที่ 10 4 ม.ค. 2549 (12:29)
Node hierarchy
FireWire devices are organized on the bus in a tree topology. Each device has a unique self-id. One of the nodes is elected root node and always has the highest id. The self-ids are assigned during the self-id process that happens after each bus-reset. The order in which the self-ids are assigned is equivalent to traversing the tree in a depth-first, post-order manner.

ความเห็นเพิ่มเติมที่ 11 4 ม.ค. 2549 (12:34)
History
According to Michael Johas Teener, original chair and editor of the IEEE 1394 standards document, and technical lead for Apple\'s FireWire team from 1990 until 1996:

The original FireWire project name was "Chefcat", the name of Michael Teener\'s favorite coffee cup.The standard connectors used for FireWire are related to the connectors on the venerable Nintendo GameBoy. While not especially glamorous, the GameBoy connectors have proven reliable, solid, easy to use and immune to assault by small children.
FireWire is a trademark of Apple Computer, Inc. The trademark was filed in 1993. The "FireWire" name was chosen by a group of engineers socializing before Comdex 1993, just before the project was about to go public. IBM, Apple, Texas Instruments, Western Digital, Maxtor and Seagate were all showing drives, systems and other various FireWire support technology. The marketing forces behind the FireWire project had originally considered a name like "Performa".
FireWire won the "most significant new technology" award from Byte Magazine at the Comdex 1993 show.
During the period they participated with the IEEE p1394 working group, Apple proposed licensing all of their blocking patents for $3,000, a one time fee only for "the point of first use" or the integrated circuits that implement the protocols. Furthermore, there was a discount if a contribution was made to the IEEE undergraduate scholarship fund. Under that agreement, the IEEE agreed to include the appropriate patents in the standard.
Apple never intended to charge for the use of the name "FireWire". It could be used by any party signing an agreement to use the name for a product that was compliant with IEEE 1394-1995, the original version of the standard. Steve Jobs was convinced that Apple should ask for $1 per port for the patents that became part of the standard. The argument was that it was consistent with the MPEG patent fees.
The fallout from charging $1 per FireWire port was significant, particularly from Intel. Intel had sunk a great deal of effort into the standard with the improved 1394a-2000 standard being partially based on work contributed by Intel. A group within Intel used this as a reason to drop 1394 support and bring out the improved USB 2.0 instead.
Simultaneously, Sony and the other backers of the technology noted to Apple that they all had patents too and were entitled to per-port royalties. Under these circumstances, Apple would have to pay roughly $15 per port to the other FireWire technology developers. The end result was the creation of the "1394 Licensing Authority", a body which charges everyone $0.25 per end user system (like a car or computer) that uses any 1394 technology.

ความเห็นเพิ่มเติมที่ 12 4 ม.ค. 2549 (12:34)
See also
• HAVI, FireWire to control Audio and Video hardware.
• Universal Serial Bus (USB)
External links
• 1394 Trade Association
• 1394 LA MPEG LA administers the rights for patented inventions necessary to implement IEEE 1394.
• Apple FireWire Technology
• IEEE p1394c Working Group website
• USB 2.0 vs FireWire — performance benchmarks of external drives using Macs
• FireWire Port Failures in Host Computers and Peripheral Devices by James Wiebe
• PC World article on IEEE 1394
• FireWire Firmware and utilities by FireWireDepot
• FireWire pinouts
• FireWire support for the Linux

ความเห็นเพิ่มเติมที่ 13 4 ม.ค. 2549 (12:35)
References
• IEEE p1394 Working Group (1995). IEEE Std 1394-1995 High Performance Serial Bus, IEEE. 0-7381-1203-8.
• IEEE p1394a Working Group (2000). IEEE Std 1394a-2000 High Performance Serial Bus - Amendment 1, IEEE. ISBN 0-7381-1958-X.
• IEEE p1394b Working Group (2002). IEEE Std 1394b-2002 High Performance Serial Bus - Amendment 2, IEEE. ISBN 0-7381-3253-5.
• INCITS T10 Project 1467D (2004). Information technology — Serial Bus Protocol 3 (SBP-3), ANSI INCITS. ANSI INCITS 375-2004.
• Don Anderson (1999). FireWire System Architecture, MindShare, Inc.. ISBN 0-201-48535-4.

ความเห็นเพิ่มเติมที่ 14 4 ม.ค. 2549 (12:46)
References
• IEEE p1394 Working Group (1995). IEEE Std 1394-1995 High Performance Serial Bus, IEEE. 0-7381-1203-8.
• IEEE p1394a Working Group (2000). IEEE Std 1394a-2000 High Performance Serial Bus - Amendment 1, IEEE. ISBN 0-7381-1958-X.
• IEEE p1394b Working Group (2002). IEEE Std 1394b-2002 High Performance Serial Bus - Amendment 2, IEEE. ISBN 0-7381-3253-5.
• INCITS T10 Project 1467D (2004). Information technology — Serial Bus Protocol 3 (SBP-3), ANSI INCITS. ANSI INCITS 375-2004.
• Don Anderson (1999). FireWire System Architecture, MindShare, Inc.. ISBN 0-201-48535-4.

ความเห็นเพิ่มเติมที่ 15 4 ม.ค. 2549 (12:48)
Firewire Description
Firewire [IEEE-1394] defines a media, topology and protocol for both a backplane physical layer or point-to-point serial cable interface. The interface is also called the High Performance Serial Bus (HPSB). On the Apple computer it became the high-performance replacement for the Apple Desktop Bus (ADB).

The backplane version uses two single ended signals and operates at 12.5Mbps [TTL], 25Mbps [TTL], or 50Mbits/sec [BTL or ECL].

The cable (differential) version operates at 100Mbps, 200Mbps, or 400Mbits/sec, [800Mbits/sec for 1394b] using half-duplex [full duplex 8B/10B encoding for 1394b].

Devices on the bus are Hot-Swappable. It supports up to 63 devices at a maximum cable distance between devices of 4.5 meters. The maximum devices on the bus is 16 allowing a total maximum cable distance of 72 meters. Transmitting data over CAT5 cable allows data at 100Mbps to travel 100m [1394b]. Fiber cable will allow 100 meter distances at any speed [depends on the type of fiber cable].

The digital interface supports either asynchronous and isochronous data transfers. Addressing is used to a particular device on the bus. Each device determines its own address.
Firewire Bus Interface IC Vendors
Epson

Fujitsu Microelectronics Inc.

Genesyslogic company {USB 2.0 to IEEE-1284/DMA Bridge Controller/UTMI Compliant Transceiver, ATA/ATAPI Controller, Disk Controller}

NEC Corp.

Oxford Semiconductor Ltd {Bridge chip providing ATA/ATAPI (IDE) peripherals with FireWire (IEEE1394, 1995) connectivity}

Philips Semiconductors {IEEE1394 link layer controller/Physical layer interface ICs}

STMicroelectronics {IEEE1394}

TI {Link/Physical Layer Controller IC}

VIA Technology Inc. {Link-Layer / PHY Chipset}
IC Manufacturers {All other types} {This Site}

ความเห็นเพิ่มเติมที่ 16 4 ม.ค. 2549 (12:48)
Firewire Online Standards and Specifications
IEEE-STD-1394-1995: IEEE Standard for a High Performance Serial Bus
IEEE-STD-1394a-2000: IEEE Standard for a High Performance Serial Bus
IEEE-STD-1394b-2002: IEEE Standard for a High Performance Serial Bus
IEEE1394b is the latest released standard.

Serial Bus Protocol 3: [SBP-3]; specifies a protocol for the transport of commands, data and status between devices
1394 Trade Association {1394ta.org}
Apple
IEEE {Institute of Electrical and Electronic Engineers, Inc.}
Firewire Connector Manufacturers and Pin-out
Advanced-Connectek INC. \'ACON\'
Amphenol{FireWire Plugs and Receptacles}
DDK Electronics, Inc
FCI {IEEE 1394 Connectors}
ITT Cannon {USB Board: Horizontal SMT, Horizontal DIP, Upright DIP. USB Cable: Plug type}
Keystone
Kycon
Molex
Switchcraft {Right angle PC and surface mount to 1394R-4006N}
Tyco Electronics
FireWire Stuff {Cables - Adapters - Equipment}

ความเห็นเพิ่มเติมที่ 17 4 ม.ค. 2549 (12:50)
Firewire Connector Pinout
Two types of connectors are used with FireWire; 4 pin connector (consumer electronics), and a 6 pin connector (computers).
The 6 pin connector has the following pinout:
Pin 1; Power, 30volts
Pin 2; Ground
Pins 3, 4; B Twisted pair (-/+)
Pins 5, 6; A Twisted pair (-/+)
Cable shield
Pins 3/4 are crossed with pins 5/6 at the opposite ends of the cable. The transmitter sends clock [Strobe] on 3/4, and data on 5/6.


6 pin to 4 pin Firewire [IEEE-1394] interconnection and pinout

ความเห็นเพิ่มเติมที่ 18 4 ม.ค. 2549 (12:52)
Signal names and pinout for the 6 and 4 pin connectors: [1394a-2000 added the 4 pin connector]

FireWire Pinout
Pin Number 6 Pin Connector 4 Pin Connector
1 VP TPB*
2 VG TPB
3 TPB* TPA*
4 TPB TPA
5 TPA* (Shell) VG
6 TPA -
TPA is Transmit Strobe, Receive Data
TPB is Receive Strobe, Transmit Data

9 Pin Connector FireWire Pinout
Pin # Signal Name Pin Function
1 TPB* Twisted Pair B, Minus
2 TPB Twisted Pair B, Plus
3 TPA* Twisted Pair A, Minus
4 TPA Twisted Pair A, Plus
5 TPA (R) Ground, Twisted Pair A
6 VG Power Ground
7 NC No Connection
8 VP Power Voltage
9 TPB (R) Ground, Twisted Pair B
Plug Shield Cable Shield Ground
Note the pinout table for the 4-Pin and 6-Pin connector is not an interconnection table, it just defines the pinout.
Use the schematic above to determine interconnection.

ความเห็นเพิ่มเติมที่ 19 4 ม.ค. 2549 (12:54)
ตารางดูยากนิดนะคะ

ความเห็นเพิ่มเติมที่ 20 4 ม.ค. 2549 (12:54)
FireWire Introduction
FireWire (as originally designated by Apple), sometimes known as IEEE 1394 (the industry standard designation), or as i.LINK (a Sony branding initiative), is a serial I/O interface for connecting computer peripherals - especially high-speed devices such as video camcorders, audio recorders, and external storage devices. The theoretical limit for the bandwidth of a FireWire interface is 400 Mbps (or 50 MB per second), although actual throughput is lower. A FireWire bus is self-powered (FireWire peripherals can derive power from the bus, eliminating the need for a separate power cord); it configures itself automatically (not requiring device IDs or terminators); and it is hot-pluggable (one can connect and use a FireWire peripheral via a simple modular connector without having to restart the computer).
FireWire replaced SCSI as Apple\'s standard high-speed interface beginning with the blue G3 PowerMac; PCI cards and PC Cards can bring FireWire ports to PCI PowerMacs and PowerBook G3\'s, respectively.
FireWire Digital Video (DV) camcorders, digital still cameras, and analog-digital video converters are already available, with mass storage devices (hard drives, magneto-optical drives, high-capacity removables, tape drives, and CD/DVD drives) and printers mostly still to come. As this guide evolves, it will track the release of FireWire peripherals and software drivers, summarize and link to important technical information about FireWire.