super speed usb3.0

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SUPER SPEED USB3.0

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INTRODUCTION

• The USB 3.0 Promoter Group announced on November 17, 2008, version 3.0 and submitted to USB-IF

• The first certified USB 3.0 consumer products were announced January 5, 2010

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UNIVERSAL SERIAL BUS

• Designed to allow many peripherals to be connected using a single standardized interface socket.

• Consists of a host, USB ports, and peripheral devices connected in a tiered-star topology

• Also called as Superspeed• Provides power to low power consuming

devices

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Pre-releases1 USB-IF formed

1 USB 1.0 specification 12 Mbit/s

1 USB 2.0 specification 480 Mbit/s

1 USB 3.0 specification 5 Gbit/s

2010 USB 3.0 devices in market

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Architectural components

Hub Provides electrical interface betweendevices and host. Functionalities TypesHost Types Functionalities

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DUAL BUS ARCHITECTURE• USB 3.0 is a

physical SuperSpeed bus combined in parallel with a physical USB 2.0 bus

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SUPER SPEED CONNECTION

Device notifies it is connected

Host makes request

Device ready notifies this with ERDY

Else tells host unavailable to process by sending NRDY

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Physical structure

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Cable structure

Connector pins

• One power pair• One twisted signal pair for USB 2.0 data path• Two twisted signal pairs for the SuperSpeed

data path.• Supports full duplex mode

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CABLE STRUCTURE

CONNECTOR PINS

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FEATURES

• Transfer Rate• Backward compatibility• Power specifications• Cable length• Transfer mode

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USB 3.0 vs USB2.0

USB 3.0 USB 2.0•Super speed High speed •900 mA power 500 mA•Full duplex Half duplex

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ADVANTAGES

• Super speed• Power efficiency• Efficient when compared to its competitors• Backward compatibility

DRAWBACKS• Cable length is limited to 3m.• Intel at present not supporting

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CONCLUSION

• USB 3.0 wil also be popular like earlier versions.

• As it is backward compatible it will be used in the new computers and devices

• High speed communication protocol.

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REFERENCES

[1] en.wikipedia.org/wiki/Universal_Serial_Bus[2]USB 3.0 specification released by USB consortium www.usb.org/developers/docs[3] www.inno-logic.com/resourcesUSB3.html[4] deviceguru.com/superspeed-usb-promises5gbps

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23/01/12

THANK YOU

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