Usb 3.0

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  • Topic: Universal Serial Bus, USB, USB flash drive
  • Pages : 13 (3784 words )
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  • Published : April 24, 2011
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ABSTRACT

In the world of technology, Universal Serial Bus (USB) is a serial bus standard to connect devices to a host computer. USB was designed to allow many peripherals to be connected using a single standardized interface socket and to improve plug and play capabilities by allowing hot swapping; that is, by allowing devices to be connected and disconnected without rebooting the computer or turning off the device. Other convenient features include providing power to low-consumption devices, eliminating the need for an external power supply; and allowing many devices to be used without requiring manufacturer-specific device drivers to be installed.

The SUPERSPEED USB (aka. USB 3.0) is the upcoming version of the Universal Serial Bus (USB). The specification of the new standard had been announced by USB Implementers Forum (USB-IF). Superspeed USB brings significant power and performance enhancements to the popular USB standard while offering Backward compatibility with billions of USB-ebnabled PCs and peripheral devices currently in use by consumers. Delivering data transfer rates upto ten times faster than Hi-Speed USB (USB 2.0) with optimized power efficiency, Superspeed USB is the next step in the continued evolution of USB technology.

CONTENTS

TITLE PAGE NO CHAPTER 1: INTRODUCTION 6 CHAPTER 2: HISTORY 7 CHAPTER 3: ARCHITECTURE 9 CHAPTER 4: PHYSICAL STRUCTURE 12 CHAPTER 5: FEATURES 16 CHAPTER 6: COMPARISON WITH USB 2.0 19 CHAPTER 7: APPLICATIONS 22 CHAPTER 8: CONCLUSION 24 CHAPTER 9: REFERENCES 25

CHAPTER 1
INTRODUCTION
Universal Serial Bus (USB) is a serial bus standard to connect devices to a host computer. The USB 3.0 is the upcoming version of the USB. The USB 3.0 is also called super speed USB. Because the USB 3.0 support a raw throughput of 500MByte/s. As its previous versions it also supports the plug and play capability, hot swapping etc. USB was designed to allow many peripherals to be connected using a single standardized interface socket. . Other convenient features include providing power to low-consumption devices, eliminating the need for an external power supply; and allowing many devices to be used without requiring manufacturer-specific device drivers to be installed.

There are many new features included in the new Universal Serial Bus Specification. The most important one is the super speed data transfer itself. Then the USB 3.0 can support more devices than the currently using specification which is USB 2.0. The bus power spec has been increased so that a unit load is 150mA (+50% over minimum using USB 2.0). An unconfigured device can still draw only 1 unit load, but a configured device can draw up to 6 unit loads (900mA, an 80% increase over USB 2.0 at a registered maximum of 500mA). Minimum device operating voltage is dropped from 4.4V to 4V. When operating in SuperSpeed mode, full-duplex signaling occurs over 2 differential pairs separate from the non-SuperSpeed differential pair. This result in USB 3.0 cables containing 2 wires for power and ground, 2 wires for non-SuperSpeed data, and 4 wires for SuperSpeed data, and a shield (not required in previous specifications).

CHAPTER 2
HISTORY
2.1 PRERELEASES

·USB 0.7: Released in November 1994.
·USB 0.8: Released in December 1994.
·USB 0.9: Released in April 1995.
·USB 0.99: Released in August 1995.
·USB 1.0: Release Candidate: Released in November 1995.

2.2. USB...
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