super speed usb3.0

Category: Education

Presentation Description

Seminar Presentation about USB 3.0


Presentation Transcript

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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 2

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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 3

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How Communication Endpoint built into device by manufacturer Endpoint addressable by (device address , endpoint number)as specified in packet sent by host If data from host to endpoint an OUT packet sent If data from device to an IN packet sent by host 4

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How Communication Established Device Connected Enumeration starts by sending reset signal Data rate of device determined Device Assigned a unique address If host supports device, driver loaded 5

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Past----->Present USB-IF formed USB 1.0 specification 12 Mbit/s USB 2.0 specification 480 Mbit/s USB 3.0 specification 5 Gbit/s 2010 USB 3.0 devices in market 6

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WHY USB 3.0 Popularity Transfers HD data in short time Superior than its competitors 7

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FEATURES Dual bus architecture Cable sructure supporting full duplex transmission Connector supporting cable structure Power Link level power management Asynchronous notify 8

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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 9

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CABLE STRUCTURE 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 10

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Power 50% more power provided(100-150mA)for unconfigured device. 80%more power provided(500-900mA)for configured device. Link level power management Continous device polling eliminated 12

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SUPER SPEED ARCHITECTURE Physical layer Link layer Protocol layer 13

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PHYSICAL LAYER Physical connection between downstream port and upstream port If connected reciever termination enabled No signalling occurs generates LFPS 8 bit data scrambled and encoded to 10 bit,sends to link layer Link layer to physical 14

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LINK LAYER Link level power management Insertion of packet delimiters Receive and manage packets Interface between protocol layer 15

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PROTOCOL LAYER End to end communication Deals with protocols Reliable delivery 16

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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 17

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SUPER SPEED TRANSFER Two channels No propagation delay Data bursting OUT-data packet contains address information IN-sends packet with sequence number that host tells 18

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USB 3.0 vs USB2.0 USB 3.0 USB 2.0 Super speed High speed Asynchronous notify Polling Link level power management No such properties 900 mA power 500 mA Full duplex Half duplex 19

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USB 3.0 vs FIREWIRE,ESATA 6 times faster than firewire 800 Faster than esata esata cannot provide power USB 3.0 has improved power management, meaning that devices can move into idle, suspend, and sleep states 20

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ADVANTAGES Super speed Power efficiency Efficient when compared to its competitors Backward compatibility 21

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DRAWBACK Intel at present not supporting Cable length limited to 3m 22

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FUTURE Twisted pair cable replaced by optical fibre 23

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CONCLUSION USB 3.0 wil also be popular like earlier versions. Will replaces firewire etc As it is backward compatible it will be used in the new computers and devices 24

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REFERENCE [1] [2]USB 3.0 specification released by USB consortium [3] [4] 25

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