shadi agel pongsakorn bunyaphriruang chih-chung chang winnie chia
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Shadi AgelShadi AgelPongsakorn BunyaphriruangPongsakorn Bunyaphriruang
Chih-Chung ChangChih-Chung ChangWinnie ChiaWinnie Chia
USB 2.0 VS FireWire
Transformation of Back PanelTransformation of Back Panel
Back Panel before PC99 standard
Back Panel After PC99 standard
New Back Panel with FireWire and USB 2.0
Different kinds of cablesDifferent kinds of cables
Printer cable
PS/2 mouse/keyboard extend cable
BNC monitor cable
SCSI Cable RS-232
Cost• Specialized production increase cost
• Decrease in Price ( Results in only 0.2 cents per printer cable in profit)
Why did we change?Why did we change?
Why did we change?Why did we change?SPEED
Convenient
Hot swappable
Plug and Play
Single Connector
Why did we change?Why did we change?
USB 1.1USB 1.1• Introduced in 1995
• Designed to replace every external connector
• 1.5 Mbps or 12 Mbps speed
• Only requires single IRQ for all devices connected
• Hot-swappable
• Plug and Play
Weakness of USB 1.1Weakness of USB 1.1
Slow speed (Slower than SCSI’s 40Mbps)
Needs CPU to handle control device
USB 2.0USB 2.0
Developed by Compaq, Intel , Microsoft, NEC, HP, Lucent and Philips on April27, 2000.
Replaced the old USB 1.1 standard.
First product hit the market in Spring 2001.
History of USB 2.0
Fully backwards compatible with USB Fully backwards compatible with USB 1.11.1
Speeds of up to 480 Mega bits per Speeds of up to 480 Mega bits per secondsecond
Supports 1.5 Mbps, 12Mbps and 480 Supports 1.5 Mbps, 12Mbps and 480 Mbps speedMbps speed
Feature of USB 2.0(1)Feature of USB 2.0(1)
Supports dynamic speed changingSupports dynamic speed changing
Supports multiple speeds in one tree.Supports multiple speeds in one tree.
Feature of USB 2.0(2)Feature of USB 2.0(2)
USB 1.1 device USB 1.1 device connectionconnection
USB 1.1 HUB
ExternalCDRW
Mouse
ExternalCDRW
M.B
KeyboardWith USB hub
1.5Mbps
12Mbps
12 Mbps
1.5Mbps
The speed limit by previous device
1.5Mbps
12 Mbps
USB 2.0 device USB 2.0 device connectionconnection
USB 2.0 HUB
ExternalCDRW
Mouse
PC camera
M.B
KeyboardWith USB hub(USB2.0)
1.5Mbps
1.5Mbps12Mbps480Mbps
480 Mbps
480Mbps
The speed can be changed if needed
1.5Mbps
12 Mbps
FireWireFireWire
Developed by Apple Inc.Developed by Apple Inc.
Replaced AV-cable, coaxial cable, S-Replaced AV-cable, coaxial cable, S-video cablevideo cable
First product hit the market in 1997First product hit the market in 1997
History of FireWire
Features for FireWire(1)Features for FireWire(1)
Digital transmission (AV-cable and S-Digital transmission (AV-cable and S-video cable are transmitted by analog video cable are transmitted by analog signal)signal)
Speeds of up to 400 Mbps for 1394aSpeeds of up to 400 Mbps for 1394a
Supports 100 Mbps, 200 Mbps and 400 Supports 100 Mbps, 200 Mbps and 400 Mbps speedMbps speed
Features for FireWire(2)Features for FireWire(2)
Only supports peer to peer connectionOnly supports peer to peer connection
Hot-swappableHot-swappable
Plug and playPlug and play
Different kinds of FireWireDifferent kinds of FireWire
4 PIN4 PIN Used mainly in consumer electronic industryUsed mainly in consumer electronic industry Small size connector makes it easy to build Small size connector makes it easy to build
on a deviceon a device
6 PIN6 PIN Used mainly in computer industryUsed mainly in computer industry Extra 2 pins supply the power to each Extra 2 pins supply the power to each
devicedevice Larger connector makes it harder to breakLarger connector makes it harder to break
ConfigurationConfiguration
Data is transmitted digitallyData is transmitted digitally
IsochronousIsochronous
Data is transmitted in packetData is transmitted in packet
ArbitrationsArbitrations
FireWire VS USB 2.0
USB 2.0USB 2.0
Star- tiered topologyStar- tiered topologySupports up to 127 Supports up to 127 devicesdevicesHot swappableHot swappable
Host (Root Hub)
Hub 1 node node
Hub 2 node
Hub 3
Hub 4
node
node
node
node
First Principles
SecondPeripherals
FireWire (IEEE 1394)FireWire (IEEE 1394)
Tree TopologyTree TopologyNo LoopNo LoopSupports 64 devicesSupports 64 devicesHot swappableHot swappablePeer to Peer connectionPeer to Peer connection
PC
Advantages of USB 2.0Advantages of USB 2.0
Hot-swappableHot-swappableSupports up to 127 devices for a single Supports up to 127 devices for a single computercomputerPlug and playPlug and playSupports multiple speedsSupports multiple speeds
(1.5mbps, 12Mbps, 480Mbps)(1.5mbps, 12Mbps, 480Mbps)
Advantages of FireWireAdvantages of FireWire
Speeds up to 400 MbpsSpeeds up to 400 MbpsSupports up to 63 devicesSupports up to 63 devicesHot-swappableHot-swappableLow costLow costOperating System (windows 98, windows Operating System (windows 98, windows 2000, windows XP)2000, windows XP)Generally accepted by consumer Generally accepted by consumer electronic manufactureselectronic manufactures
Disadvantages: USB 2.0 /FireWireDisadvantages: USB 2.0 /FireWire
USB 2.0USB 2.0 No O.S. native support.No O.S. native support.
Expensive (for consumer)Expensive (for consumer)
Not generally accepted by consumer electronic Not generally accepted by consumer electronic manufacturesmanufactures
FireWireFireWire Speed of only 400Mbps vs. USB 2.0 480MbpsSpeed of only 400Mbps vs. USB 2.0 480Mbps
Expensive( for consumer and manufacture)Expensive( for consumer and manufacture)
AvailabilityAvailabilityUSB 2.0USB 2.0
few products available in the market and only in PC.few products available in the market and only in PC. less than 1% of PC have USB 2.0, but continue to replaceless than 1% of PC have USB 2.0, but continue to replace USB 1.1.USB 1.1. Not available in Mac.Not available in Mac.
FireWireFireWire mostly used in consumer electronic (DV, digital Videomostly used in consumer electronic (DV, digital Video recorder)recorder) 25% of new computer equipped with FireWire port25% of new computer equipped with FireWire port
ForecastForecast
FireWire (IEEE 1394)FireWire (IEEE 1394) IEEE 1394b: speed of 800MbpsIEEE 1394b: speed of 800Mbps Next generation 3.2GbpsNext generation 3.2Gbps
USB 2.0USB 2.0 InfiniBand 1.0: Speeds up to 3Gbps inInfiniBand 1.0: Speeds up to 3Gbps in year 2006year 2006
The End
• 1) What were the main reasons for the change from serial, printer, game, and ps/2 ports to the USB 1.1 port?• 2) What are the main differences between USB 1.1 and USB 2.0?• 3) Explain the speed limitations when connecting USB 1.1 and USB 2.0 devices. • 4) What are the main reasons for the development of Firewire and how does it make connecting devices to each other easier?• 5) Explain the differences between Firewire and USB 2.0?
Questions
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