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.ppt  USB 3.0.ppt (Size: 2.66 MB / Downloads: 653)
What is USB Stands for?

 USB stands for Universal Serial Bus
 Provides an expandable, fast, bi-directional, low cost, hot pluggable Plug and Play serial hardware interface
 Allows users to connect a wide variety of peripherals to a computer and have them automatically configured and ready to use
 Implemented to provide a replacement for legacy ports to make the addition of peripheral devices quick and easy for the end user
History of USB
 Developed and standardized by a group of leading companies from the computer and electronics industries in 1995.
 USB specifications were developed by Compaq, DEC, IBM, Intel , Microsoft, and NEC, joined later by HP, Lucent, and Phillips.
 Intel produced the UHCI(Universal Host Controller Interface) host controller.
 Microsoft produced a USB software stack for Windows and co-authored the OHCI(Open Host Controller Interface) host controller specification with National Semiconductor.
 Compaq; Philips produced early USB-Audio.
 USB was intended to replace the multitude of connectors at the back of PCs, as well as to simplify software configuration of communication devices.
 In older DAYS Mouse and keyboards were directly connected to serial port or dedicated connectors
Key Features
 Single connector type
 Replaces all different legacy connectors with one well-defined standardized USB connector for all USB peripheral devices
 Hot swappable
 Devices can be safely plugged and unplugged as needed while the computer is running (no need to reboot)
 Plug and Play
 OS software automatically identifies, configures, and loads the appropriate driver when connection is made
 High performance
 USB offers data transfer speeds at up to 480 Mbps
 Expandability
 Up to 127 different peripheral devices may theoretically be connected to a single bus at one time
 Bus-supplied power
 USB distributes the power to all connected devices, eliminating the need for an external power source for low power devices (flash drives, memory cards, Bluetooth)
 Easy to use
 The single standard connector type simplifies the end user’s task of figuring out what plug goes into what socket
 Automatic driver loading does all the work for the end user
 Low cost
 The host handles most of the protocol complexity, making the design simple and having a low cost
History of USB 1.0 AND USB 1.1
 The USB 1.0 specification was introduced in January 1996.
 The original USB 1.0 specification had a data transfer rate of 1.5 Mbit/s (millibit/second) (~183 kB/s) .
 The first widely used version of USB 1.1, which was released in September 1998.
 It allowed for a 12 Mbit/s (~1.43 MB/s) data rate for higher-speed devices such as disk drives, and a lower 1.5 Mbit/s rate for low bandwidth devices such as joysticks.
 USB 1.0 Connectors
 USB 2.0
History of USB 2.0
 The USB 2.0 specification was released in April 2000 and was standardized by the USB-IF (Implementers Forum, Inc) at the end of 2001.
 Hewlett-Packard, Intel and Philips jointly initiative to develop e higher data transfer rate, with the resulting specification achieving 480 Mbit/s (~57 MB/s).
 This is USB 2.0 port
Features of USB 2.0
 The communication speed is 480 Mbit/s .
 All USB 2.0 devices are backward compatible with
USB 1.1.
 The communications are half-duplex, i.e bi-directional, in one direction at a time over a twisted-pair cable.
 The goal of the new serial bus is to broaden the range of external peripherals that can be used on a computer.
Disadvantages of USB 2.0
USB 2.0 Is not very much fast.

 USB 2.0 for many applications provides sufficient bandwidth for a variety of devices and hubs to be connected to one host computer.
 However, with today's ever increasing demands placed on data transfers with high-definition video content, terrabyte storage devices, high megapixel count, digital cameras
 and multi-gigabyte mobile phones and portable media players, 480Mbps is not really fast anymore.
 Furthermore, no USB 2.0 connection could ever come close to the 480Mbps theoretical maximum throughput, making data transfer at around 320 Mbps the actual real-world maximum.
 Theirefore USB 3.0 was Introduced.
How To Identify What Type Of USB System Have?
 Well, if you purchased your computer before 2001 you may have the older speed installed. But you never know with technology since the newer speeds were introduced in 2001, your computer just might have the faster speed. So, to check this ,you have to follow following steps :-
 Start/ run and type devmgmt.msc , a window opens. This shows all the devices on your computer.
 Expand line by clicking the plus sign for Universal Serial Bus controllers, devices are listed in alphabetical order, so it is probably the last on the list.
 The first item in the list should read: Standard Enhanced PCI to USB Host Controller.
 If the word 'Enhanced' is not in that line or any subsequent lines (one for each usb port), then you have the older port 1.0 or 1.1. Enhanced word is indicating the usb2.0.
Future USB 3.0
Introduction of USB 3.0

 The USB 3.0 Specification was published in
12 November 2008.
 Its main goals were to increase data transfer rate (up to 4800 Mbit/s, ~572 MB/s, ~5Gbps) decrease power consumption, increase power output and be backwards compatible with USB2.0.
 USB 3.0 includes a new, higher speed bus called SuperSpeed in parallel with the USB 2.0 bus.For this reason, the new version is also called SuperSpeed.
 USB 3.0 uses full duplex operation, i.e. simultaneous communication in both directions.
 USB3 defines class codes used to identify a device’s functionality and to load a device driver based on that functionality.
 This enables every device driver to support devices from different manufacturers that comply with a given class code.
How does USB 3.0 achieve the extra performance?
 USB 3.0 achieves the much higher performance by way of a number of technical changes. Perhaps the most obvious change is an additional physical bus that is added in parallel with the existing USB 2.0 bus.
 This means that where USB 2.0 previously had 4 wires (power, ground, and a pair for differential data), USB 3.0 adds 4 more for two pairs of differential signals (receive and transmit) for a combined total of 8 connections in the connectors and cabling.
 These extra two pairs were necessary to support the SuperSpeed USB target bandwidth requirements, because the two wire differential signals of USB 2.0 were not enough.
 USB 3.0 utilizes a bi-directional data interface rather than USB 2.0's half-duplex arrangement, where data can only flow in one direction at a time. Without getting into any more technical mumbo jumbo, this all combines to give a ten-fold increase in theoretical bandwidth, and a welcome improvement noticeable by anyone when SuperSpeed USB products hit the market.
SuperSpeed Architecture
 USB 3.0 physical SuperSpeed bus combined in parallel with a physical USB 2.0 bus.
Internal working diagram of USB 3.0 cable
 USB 3.0 cables have eight primary conductors:
 Three twisted signal pairs for USB data paths and a power pair.
 In addition to the twisted signal pair for USB 2.0 data path, two twisted signal pairs are used to provide the SuperSpeed data path,
 One for the Transmit path and one for the Receive path.
Why to 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 “greener world”
 “Dov_Moran0” has produced the first USB 3.0 Flash Drive
USB3.0 Motherboard
 This Is the First USB 3.0 P7P55D-E Motherboard which was introduced by ASUS company in 29th October 2009
 Don’t get too excited about this though, as Asus has taken a shortcut to getting the new standard on a motherboard. The Xtreme Design P7P55D-E Premium board does not support USB 3.0 without modification so what Asus did was bolt on a controller and two USB 3.0 ports. That means the board is quite unusual as it also has 10 USB 2.0 ports.
DCC launches new 3TB HDD with USB3.0
 Drive Control Corporation (DCC), has recently announced the availability of a range of Western Digital’s recently upgraded My Passport Essential portable hard drive.
Post: #2
documentation of usb 3.0
Post: #3
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Post: #4
can u plz mail me the documentation of super fast usb 3.0
Post: #5
to get information about the topic SUPER FAST USB 3.0 full report ,ppt and related topic refer the link bellow
Post: #6
can anyone mail documents on

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