Ellisys Download | Purchase | Contact | About | Jobs      
Protocol Analyzers
  USB 2.0
  SuperSpeed USB 3.1
  USB Type-C
  USB Power Delivery
  Wireless USB
  WiMedia Ultrawideband
Expert Notes
  Capturing Bluetooth Traffic, the Right Way 
  Optimal Placement of Your Bluetooth Analyzer 
  Bluetooth Security - Truths and Fiction 
  All Expert Notes »

SuperSpeed USB 3.1

SuperSpeed USB 3.0


In September 2007, the USB 3.0 Promoter Group (Intel, NXP, HP, Texas Instruments, Microsoft, and NEC) was formed to create the third major incarnation of the ubiquitous Universal Serial Bus, terming this new iteration “SuperSpeed USB.”  USB, first introduced in the mid-1990s with speeds topping out at 12Mb/s, and updated in 2000 to achieve a 480Mb/s rate, will appear on the consumer scene in 2009 with an absolutely blazing 5Gb/s signaling rate, representing more than a 10x speed increase over today’s connection.

SuperSpeed USB 3.0 draws upon the general user-perspective architecture of USB 2.0, and in fact co-exists with USB 2.0 on the cable and within systems, devices, hubs, and software, but under the hood, engineers find substantially different physical and protocol layers. 

The new SuperSpeed USB technology is largely driven by the proliferation of digital media and resulting super-large file sizes, and is expected to target fast “sync-and-go” transfer applications in the PC, consumer, and mobile device markets.  Devices and applications expected to leverage the fast data transfers speed provided by SuperSpeed USB include external hard drives, flash memory products, portable media players, handheld gaming devices, and mobile devices with embedded flash memory.

In July 2013 the USB-IF introduces an improved version of the SuperSpeed technology, part of the USB 3.1 specification. Don't be fooled by the apparently minor step from 3.0 to 3.1. The new specification introduces a whole new physical layer and link layer optimizations, enabling 20% efficiency increase at the same data rate, and at the same time doubling the data rate to 10 Gbps, for a total increase of 2.5x. The specification extends the existing SuperSpeed mechanical, electrical, protocol and hub definition while maintaining compatibility with existing USB 3.0 software stacks and device class protocols as well as with existing 5Gbps hubs and devices and USB 2.0 products. 

New challenges for developers

Such a huge step in the technology means plenty of new challenges for developers.  The high-performance protocol, the increased speed, the aggressive power management, etc., are all aspects that will need to be mastered.

To enable adopters of this cutting-edge technology, Ellisys creates the most technologically advanced protocol test systems including protocol analysis, traffic generator and compliance verification. The Ellisys USB Explorer 350 is latest and greatest protocol test system for the enhanced SuperSpeed USB 3.1 at 10 Gbps. Learn more »


Here are a few links to pages containing a whole information range about USB.

USB 3.0 homepage
USB 3.0 specification

USB 3.0 DevCon presentations
Intel USB 3.0 technology homepage
Intel USB 3.0 Extensible Host Controller Interface (xHCI) specification
Ellisys USB Explorer 280 SuperSpeed 3.0 5Gbps Analyzer and Generator
Ellisys USB Explorer 350 SuperSpeed 3.1 10Gbps Analyzer and Generator

 ©  2024  Ellisys. All rights reserved - Terms of Use - Privacy Statement - Write to the webmaster