superspeed usb
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USB 3.0(SUPERSPEED USB)
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Joshner Johny
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INTRODUCTION
Universal serial bus (USB) ports are the standardconnection for a variety of electronic peripherals, fromprinters and digital cameras to flash drives and scanners.
Implemented to provide a replacement for legacy ports tomake the addition of peripheral devices quick and easier for user.
The latest version of USB is named as USB 3.0 or SUPERSPEED USB.
Provides an expandable, fast, bi-directional, low costserial hardware interface.
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HISTORY
There have been three versions released prior to 3.0
USB 1.0 in January 1996 ± data rates of 1.5 Mbps and 12
Mbps
USB 1.1 in September 1998 ± first widely used version of
USB
USB 2.0 in April 2000-Major feature revision was the
addition of a high speed transfer rate of 480 Mbps
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USB 3.0 NOW
It was developed on Nov 17,2008
It is also called as SUPERSPEED technology
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Why The Upgrade ??
Mainly the need for faster transfer rates in
devices such as hard drives, flash card
readers, and DVD, Blu-ray, and HD DVD
optical drives User applications demanding a higher
performance connection between the PC and
peripherals Need for greater energy efficiency in today¶s
³greener world´
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USB 3.0 FEATURES
10x performance increase over USB 2.0
Backward Compatible
Same USB Device model
Low power consumption
Hot swappable-easily plug and play no reboot
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Lower software overhead
Compatibility-full duplex
Longer maximum cable length
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ARHCITECTURE
USB 3.0 utilizes a dual-bus architecture that
provides backward
compatibility with USB
2.0.It provides for
simultaneous operation of
Super Speed and non-
Super Speed information
exchanges
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USB 3.0 is a physical Super Speed bus combined in
parallel with a physical USB 2.0 bus
It has similar architectual components as USB 2.0
USB 3.0 interconnect USB 3.0 devices
USB 3.0 host
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PIN OUTS
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USB 3.0 connectors AND cable goals
Deliver low cost connectors and cable
assemblies solutions to meet USB 3.0
architecture and performance needs.
Support 5Gbps data rate
Manage compatibility with USB 2.0
Comprehend ease-of-use aspects
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USB 3.0 Standard A Connector
Same interface as the USB 2.0 Standard-A
Connector ,but with added pins for
Super Speed USB signals
Complete compatibility with USB 2.0
Standard-A connector Double-stacked connectors supported
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USB 3.0 Standard-B connector
Defined for relatively large, stationeryperipherals such as hard drives and printers
Visually different from USB 2.0 Standard-B
connector
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USB 3.0 Micr o Connector Family
Defined for hand held devices Backward compatible with USB 2.0 Micro
connectors
Based on USB 2.0 Micro-B connector with an
extended portion for the Super Speed USB
signals
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CABLE
Unshielded Twisted Pairs (UTP) cable usedfor USB 2.0 cannot be used for Superspeed
USB
Shielded differential pairs (SDP) twisted or
twinax is for SUPERSPEED USB
this is for singal integrity and EMI containment
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CABLE LENGTH
USB 1.0 maximum cable length is 3 metres(9.8 ft)
USB 2.0 maximum cable length is 5 metres
(16 ft)
USB 3.0 cable assembly may be of any
length as long as all requirements defined inthe specification are met.
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ADVANTAGES
Higher transfer rates ( upto 4.8Gbps)
Increased maximum bus power and
increased device current draw to better
accommodate power-hungry devices
New power management features
Full-duplex data transfers and support for
new transfer types
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New connectors and cables for higher speeddata transfer...although they are backwards
compatible with USB 2.0 devices and
computers.
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APPLICATION
USB is an important interface technology for vision applications
USB 3.0 has an opportunity to take over many applicationscurrently serviced by Camera Link
USB implements connections to storage devices using a set of standards called the USB mass storage device class
USB 3.0 also supports portable hard disk drives .The earlier versions were not supporting the 3.5 inch hard disk drives
High resolution webcams, video surveillance cameras
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USB 3.0 vs.OTHER STANDARDS
FIREWIRE 1394 has a maximum data tranfer
rate of 800Mbps.
eS ATA has a maximum data transfer of
about 3.2Gbps
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CONCLUSION
The universal serial bus 3.0 is supporting aspeed of about 5Gb/sec i.e. ten times faster
than the 2.0 version.
So hopefully by the help of this Superspeed
data tranfer rate the USB 3.0 will be replacing
many of the connectors in the future.
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REFERENCES
http://www.usb.org
http://www.usblyzer.com
http://www.lvr.com/usb3faq.htm
http://www.denali.com/en/events/usb3_whitepaper
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THANK YOU«« . .
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