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USB interfaces through the ages (USB 1.0 to USB 3.0) Guided By Prof.P.S.Dey

USB interfaces through the ages (USB 1.0 to USB 3.0) Guided By Prof.P.S.Dey. Presented by: Ajit Kumar Pasayat Regd No.10IT61B03 Information communication Technology. Contents. INTRODUCTION USB VERSIONS & HISTROY USB VERSION 1.0 USB VERSION 2.0 USB VERSION 3.0 COMPARISION

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USB interfaces through the ages (USB 1.0 to USB 3.0) Guided By Prof.P.S.Dey

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  1. USB interfaces through the ages (USB 1.0 to USB 3.0)Guided ByProf.P.S.Dey Presented by: Ajit Kumar Pasayat Regd No.10IT61B03 Information communication Technology 10IT61B03

  2. Contents • INTRODUCTION • USB VERSIONS & HISTROY • USB VERSION 1.0 • USB VERSION 2.0 • USB VERSION 3.0 • COMPARISION • ADVANTAGES • LIMITATIONS • CONCLUSION • REFERANCES 10IT61B03

  3. INTORDUCTION • Universal Serial Bus • 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 10IT61B03

  4. USB Versions & History • USB 1.0 • USB 2.0 • USB 3.0 and WUSB • In 1994 Seven companies starts the development of USB:- Compaq, DEC, IBM, Intel, Microsoft, NEC and Nortel. • USB Implementers Forum (USB-IF) formed 1995 • 2001. Hewlett-Packard, Intel, Lucent Technologies(now Alcatel-Lucent), NEC and Philips 10IT61B03

  5. 1996 – USB-1.0 – up to 12Mbit/s (LS and FS) – Initial version; • 1998 – USB-1.1 – up to 12Mbit/s (LS and FS) – Updated version; • 2000 – USB-2.0 – up to 480Mbit/s (LS, FS and HS) – Increased speed and added miniUSB; • 2004 – Wireless USB- up to 480Mbit/s – Wireless connection; • 2008? – USB 3 – up to 4.8Gbit/s – on the horizon. 10IT61B03

  6. USB Version 1.0 • USB 1.0: Released in January 1996.Specified data rates of 1.5 Mbit/s (Low-Bandwidth) and 12 Mbit/s (Full-Bandwidth). Does not allow for extension cables or pass-through monitors (due to timing and power limitations). • supporting up to 127 devices 10IT61B03

  7. Systems Support Only Low- and Full-Speed Devices 10IT61B03

  8. Operation concept • Transfer Descriptors • Each transfer descriptor defines a USB transaction . • That software has requested and scheduled for the purpose of accessing a USB device • Transfer descriptor contains information that describes a transaction to be performed • This information the USB host controller can perform the specified transaction 10IT61B03

  9. Conceptual View of Transaction Generation 10IT61B03

  10. Communication Flow in a USB System 10IT61B03

  11. USB Version 2.0 • Upgrade from USB 1.0 ,USB 1.1 • Supporting three speed modes (1.5, 12 and 480 megabits per second)i.e LS,FS,HS • USB 2.0 supports low-bandwidth devices such as keyboards and mice, as well as high-bandwidth ones like high-resolution Web-cams, scanners, printers and high-capacity storage systems. • USB 2.0, also known as hi-speed USB. 10IT61B03

  12. USB 2.0 Hierarchy 10IT61B03

  13. Low- and Full-Speed Devices Attached to Ports of the Root, 1.x, and 2.0 Hub 10IT61B03

  14. USB Version 3.0 Upgrade from USB 2.0 Nicknamed SuperSpeed USB because of the significant speed improvements over existing USB specifications New communication protocols for devices New transfer modes New power management features Longer maximum cable lengths Similar to PCI Express 2.0 technology 10IT61B03

  15. Changes in USB Version 3.0 • SuperSpeed — New higher signaling rate of 5Gbps (625MB/sec) • Dual-bus architecture — Low-Speed, Full-Speed, and High-Speed bus plus SuperSpeed bus • Asynchronous instead of polled traffic flow • Dual-simplex simultaneous bi-directional data flow for SuperSpeed instead of half-duplex unidirectional data flow • Support for streaming • Fast Sync –N-Go technology • Support for higher power • Better power management 10IT61B03

  16. Bus Architecture USB3.0 10IT61B03

  17. USB 2.0 vs. USB 3.0 10IT61B03

  18. Comparison Data Transfer Time USB Version USB1.0 USB2.0 USB3.0 Media (Data Size) Song /Image (4 MB) 5.3 sec 0.1 sec 0.01 sec 256 Flash (256 MB) 5.7 min 8.5 sec 0.8 sec USB Flash (1 GB) 22 min 33 sec 3.3 sec SD-Movie (6 GB) 2.2 hr 3.3 min 20 sec USB Flash (16 GB) 5.9 hr 8.9 min 53.3 sec HD-Movie (25GB) 9.3 hr 13.9 min 70 sec 10IT61B03

  19. Advantages • Ease of Use • Easy Cables • Easy to connect • USB is Hot Pluggable • Automatic configuration • No user settings • Reliability , Fast and versatile • Low Cost and low power consumption 10IT61B03

  20. Limitations • INTERFACE LIMITS • Speed • Distance • Pear to pear communication • Legacy hardware • Broadcasting • Developer Challenges • Protocol complexity • fees 10IT61B03

  21. Conclusion • Although the latest version of USB is more fast and user friendly, but in this rapid growth innovative digital era scope is there for a more reliable ,cost effective and versatile interface i.e. USB 4.0…. 10IT61B03

  22. REFERENCES • [1] USB 3.0 ARCHITECTURE Overview, By Bob Dunstan • [2] USB System Architecture ,By Don Anderson, second edition, MindShare, Inc (r) • [3] USB COMPLETE, By Jan Axelson, third edition, Penram International Publication(India) Pvt. Ltd. • www.usb.org • http://www.intel.com/ 10IT61B03

  23. THANK YOU 10IT61B03

  24. ??? 10IT61B03

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