The USB Component enables you to create USB Device and USB Host applications and is part of . The USB Protocol is handled by the USB Component, so that developers can focus on their application needs.

USB Component Structure

The USB Component is structured as follows:

USB Device implements an USB Device peripheral that can be connected to an USB Host.
USB Host is used to communicate to other USB Device peripherals over the USB bus.
The following USB Classes are supported:
- Human Interface Device (HID)
- Mass Storage Class (MSC)
- Communication Device Class (CDC)
- Audio Device Class (ADC) (USB Device only)
- Custom Class (for implementing new or unsupported USB Classes)
- Composite USB Devices supporting multiple device classes can be implemented.
for USB Device and USB Host provide the interface to the microcontroller peripherals.

Documentation Structure

This user's guide contains the following chapters:

Revision History lists the changes made in each version of the USB Component.
USB Device explains how to implement a USB Device with a microcontroller.
USB Host explains how to implement a USB Host with a microcontroller.
USB Concepts contains general information about the USB.
Supported USB Classes provides details about the supported USB Device Classes.
Function Overview lists the complete API of the USB Component.
Resource Requirements shows the configuration of system resources for USB Component in detail.
Migration Guide contains information how to migrate projects to latest version of USB Component (v8).
API Reference shows the directory and file organization and contains the detailed API description.

The USB-IF Document Library contains the complete USB 2.0 Specification and additional information that is referenced in this user's guide.