• 07/14/2017
  • Public Content

USB Electrical Characteristics

The USB sub-system supports one DRD (dual-role device)/OTG (on-the-go) port, which uses separate host controller (xHCI) and device controller (xDCI) IPs. As a host, it can connect to any standard USB 1.1, 2.0, or 3.0 device. As a device, it can connect to any host and can expose various SoC capabilities based on what drivers are available. The USB interface has the following features:
  • USB 3.0 – one host only, and one OTG (host or device)
  • Max USB 3.0 Speed – 5 Gb/s
  • USB 2.0 – two host only, and one OTG
  • Max USB 2.0 Speed – 480 Mb/s
Refer to Universal Serial Bus Interface Specifications for additional specifications of the USB controller.
USB Controllers
The USB subsystem incorporates the xHCI Host Controller, and USB 3.0 Controller configured as a USB Device only (xDCI).
A typical platform is expected to use a micro-AB connector on the OTG port.
USB Connect or Disconnect Scheme - Connector Dependent
Way of Detection
Micro-AB on OTG only
ID pin pulled to GND (PMIC)
OTG start as Host (selected by software)
Micro-AB on OTG only
VBUS sensing (PMIC)
 OTG start as device (selected by software)

Product and Performance Information


Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804