ARM Architecture

USB-IF Publicizes Publication of New USB4® Specification to Allow USB 80Gbps Efficiency


Beaverton, OR, USA – October 19, 2022 – USB Implementers Discussion board (USB-IF), the assist group for the development and adoption of USB expertise, at the moment introduced the publication of the USB4® Model 2.0 specification, a serious replace to allow USB 80Gbps efficiency over the USB Sort-C® cable and connector. The up to date USB4 specification doubles the utmost combination bandwidth of USB to the advantage of higher-performance shows, storage, and USB-based hubs and docks. The USB Sort-C and USB Energy Supply (USB PD) specs have additionally been up to date to assist this greater degree of information efficiency.

The up to date specs are actually obtainable for product builders to obtain at www.usb.org.

“For engineers, USB4 is outlined by its multi-protocol tunneling that architecturally differentiates it from its predecessors – USB 3.2 and USB 2.0,” stated Brad Saunders, USB-IF Board Chair and CEO. “This up to date technical specification extends USB4 velocity and information protocol efficiency, enabling producers to develop merchandise that may ship USB 80Gbps along with current USB 40Gbps and USB 20Gbps to finish customers.”

Key traits of the up to date USB 80Gbps answer embody:

  • As much as 80Gbps operation, using a brand new bodily layer structure based mostly on PAM3 sign encoding, over current 40Gbps USB Sort-C passive cables and newly outlined 80Gbps USB Sort-C energetic cables.
    • Optionally for sure functions, equivalent to driving very-high efficiency USB4-based shows, the USB Sort-C sign interface may be configured asymmetrically to ship as much as 120Gbps in a single course whereas retaining 40Gbps within the different course.
  • Updates to information and show protocols to raised use the rise in obtainable bandwidth
    • USB information structure updates now allow Enhanced SuperSpeed USB information tunneling to exceed 20Gbps.
  • Aligns with DisplayPort™ Revision 2.1 and PCI Categorical® Revision 4.
  • Backward compatibility with all earlier variations of USB.

Tips for figuring out licensed USB 80Gbps options and cables will observe the brand new unified USB-IF branding and advertising program. As a reminder, USB specification names and technical terminology will not be meant to be used when describing USB capabilities to finish customers. USB-IF licensed emblem and branding particulars can be found at www.usb.org/logo-license.

USB Developer Days 2022 will embody detailed technical coaching protecting the newest updates to the USB4, USB Sort-C and USB PD specs. Registration data for the next two scheduled occasions is accessible at www.usb.org.

  • USB Developer Days – Seattle November 1-2, 2022 Grand Hyatt Seattle, Seattle, Washington, USA
  • USB Developer Days – Seoul November 15-16, 2022 Grand Hyatt Seoul, Seoul, South Korea

Concerning the USB-IF

The non-profit USB Implementers Discussion board, Inc. was shaped to supply a assist group and discussion board for the development and adoption of USB expertise as outlined within the USB specs. The USB-IF facilitates the event of high-quality suitable USB gadgets by way of its emblem and compliance program and promotes the advantages of USB and the standard of merchandise which have handed compliance testing. Additional data, together with postings of the newest product and expertise bulletins, is accessible by visiting the USB-IF web site at www.usb.org.

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