Transcription of AN295: USB Audio Class Tutorial - Silicon Labs
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Rev. 6/06 Copyright 2006 by Silicon LaboratoriesAN295AN295 USB Audio Class TUTORIAL1. IntroductionIsochronous data transfers can be used by universal serial bus (USB) devices designed to transfer data to or froma host at a constant rate. Systems streaming Audio employ isochronous transfers to transmit Audio signals in real-time. Silicon Laboratories microcontrollers robust USB peripheral supports isochronous transfers, and eachfamily s assortment of additional high quality peripherals make them excellent single-chip solutions for USB-basedembedded system document contains the following: A USB protocol overview concentrating on isochronous transfers A Firmware Template that provides a starting point for custom USB Audio Class device firmware An example system illustrating requirements and operation of USB Audio Class OverviewThe first section of this application note discusses the key points of the USB specification that must be followed byall USB
Systems must be able to recover from occasional errors without the help of hardware. 2.3. The USB Audio Class The USB Specification documents group devices with similar capabilities into device classes. Device Class specifications require that devices share many characteristics in common, while allowing for customization and innovation.
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