Intel® Pentium® Silver and Intel® Celeron® Processors

Datasheet, Volume 1 of 2

ID Date Version Classification
633935 12/27/2022 Public
Document Table of Contents
DSP

USB Controllers Overview

Extensible Host Controller Interface (xHCI) is the interface specification that defines Host Controller for Universal Serial Bus (USB), which is capable of interfacing with USB 1.x, 2.x, and 3.x compatible devices.

In case that a device (example, USB mouse) was connected to the computer, the computer will work as Host and the xHCI will be activated inside the PCH.

Extensible Device Controller Interface (xDCI) is the interface specification that defines Device Controller for Universal Serial Bus (USB), which is capable of interfacing with USB 1.x, 2.x, and 3.x compatible devices

In case that the computer is connected as a device (example, tablet connected to desktop) to other computer then the xDCI controller will be activated inside the device will talk to the Host at the other computer.

USB Specification

Protocol Name

Data Rate

USB 2.0 Low - Speed

1.5 Mbps

USB 2.0 Full - Speed

12 Mbps

USB 2.0 High - Speed

480 Mbps

USB 3.2 Gen 1x1

5 Gbps

USB 3.2 Gen2x1

10 Gbps (xHCI only)