USB 3.0
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Transcript of USB 3.0
Universal Serial Bus 3.0
INFINITE POSSIBILITIES!
What is USB?
What is USB?
USB stands for Universal Serial BusProvides 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
What is USB? contd.
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
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
History of USB contd.
These companies formed the USB Implementers Forum as a non-profit to publish specifications and provide a support organization and forum for the advancement and adoption of USB technology
There have been three versions released prior to 3.0
History of USB contd.
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 2000Major feature revision was the addition of a high
speed transfer rate of 480 Mbps Important note – all versions are backwards
compatible with previous versions of USB
USB Now
USB Now
The next generation of USB hardware and specifications is USB 3.0
Version was announced by Pat Gelsinger at the Intel Developer Forum in September 2007
USB 3.0 Promoter Group announced in November 2008
Why the upgrade?
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
Why the upgrade? contd.
Need for greater energy efficiency in today’s “greener world”
USB 3.0 Contributors
USB 3.0 Promoter Group Announcement
USB 3.0 Contributors
USB 3.0 Contributors contd.
USB 3.0 Features
USB 3.0 Features
10x performance increase over USB 2.0Backward Compatible
Legacy devices continue to work when plugged into new host connector.
New devices work when plugged in legacy systems albeit at USB 2.0 speeds.
Existing class drivers continue to work.
USB 3.0 Features contd.
Same USB Device ModelPipe ModelUSB FrameworkTransfer Types
Power EfficientProvides excellent power characteristics
(especially for ideal links)Both on the device and the platform
Eliminate need for polling
USB 3.0 Features contd.
ExtensibleProtocol designed to efficiently scale up
USB 2.0 vs. USB 3.0
USB 2.0 vs. USB 3.0
USB 3.0 Bus Architecture
USB 3.0 Bus Architecture
USB 3.0 Bus Architecture contd.
Dual-bus architecture SuperSpeed bus operates concurrently with USB 2.0Electrically/mechanically backward &
forward compatibleDevices discovered/configured at fastest
signaling rateHubs provides additional connection points
USB 3.0 Bus Architecture contd.
SuperSpeedDual simplex signalingPackets routed to deviceHubs stored and forwardAsynchronous notifications
USB 3.0 Connector
USB 3.0 Standard-A connector
Std A – Same interface as USB 2.0 Standard-A connector, but with added pins for USB 3.0 Super-Speed signals
Complete campatibility with USB 2.0 Standard-A connector
USB 3.0 Standard-A connector contd.
Double-stacked connectors supported
USB 3.0 Standard-B connector
Std B – Defined for relativley large, stationary peripherals such as hard drivers and printers
Visually different from USB 2.0 Standard-B connectorBut the receptacle accepts a USB 2.0
Standard-B plug
USB 3.0 Standard-B connector contd.
Developed for device-powered applicationsFor example – wireless adaptors
USB 3.0 Standard-B connector contd.
Based on the USB 3.0 Standard-B connector design, but with additional device POWER and GND pins for a device to supply power
The receptacle accepts the USB 3.0 Powered-B plug, USB 3.0 Standard-B plug,or USB 2.0 Standard-B plug
USB 3.0 Standard-B connector contd.
USB 3.0 Micro connector family
Defined for hand held devicesBackward campatible with USB 2.0
Micro connectorsMicro B – Based on the proven USB 2.0
Micro-B connector design with an extended portion for the Super-Speed signals
USB 3.0 Micro connector family contd.
USB 3.0 Micro-A and –AB connectors are identical to USB 3.0 Micro-B connector except for keying/profile differences
USB 3.0 Products
USB 3.0 products
Buffalo produce world's first USB 3.0 hard disk drive
Point Grey puts USB 3.0 into a webcam
Thank You