Freescale AN4665 USB Audio Class Device Setup Guide

About this manual

This document serves as a guide for developers using the Freescale USB protocol stack to set up USB audio class devices. It details the requirements for audio class devices, including the use of composite devices and the specific interfaces required for audio control and streaming.

The guide provides an overview of the Freescale USB protocol stack structure and includes a demonstration of an audio speaker device. It explains how to define the audio topology using units and terminals and describes the specific USB descriptors needed to implement these functions according to the USB Audio Device Class Specification 2.0. This manual is written in Chinese.

What's inside

• Introduction
• Audio Class Device Requirements
• Audio Class Overview
• Audio Class Topology
• Descriptors
• Standard Interface Association Descriptor
• Audio Control Interface Descriptor
• Class-Specific Audio Control Descriptors
• Clock Source Descriptor
• Input Terminal Descriptor

Frequently asked questions

What is the purpose of this document?

This guide explains how to use the Freescale USB protocol stack to set up audio class devices.

What is the version of the USB Audio Device Class Specification mentioned?

The document references the USB Audio Device Class Specification 2.0.