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USB Audio
USB Audio Class 2.0 provides a dramatic improvement over USB Audio Class 1.0 with the addition of 24-bit audio, sample frequencies up to 192kHz and the ability to scale to large numbers of I/O channels.
XMOS has developed a USB Audio Class 2.0 software framework design to work on XS1-L devices. The design provides certified USB 2.0 High Speed device and Audio Class 2.0 device class implementations with configurable digital audio interfaces, peripherals and the ability to integrate audio processing.
Platform Support
USB Audio Class 2.0 is natively supported by Apple OS X version 10.6.4 and above. Support for Windows is provided via XMOS partners, Thesycon, CEntrance and Ploytec. The drivers are configurable and provide support for WDM/Direct X and ASIO 2.1.
Reference Designs
XMOS has developed two reference designs based on the USB Audio Class 2.0 software framework, which is available free of charge and released under a royalty free license. Each design consists of the hardware platform, source code, demonstration drivers and documentation.
Software Framework Key Features
- Bit-perfect sound with high sample frequencies, up to and including 192kHz
- Seamless scalability with up to 18 channels of audio
- Asynchronous USB operation allowing low jitter clocks
- Exact mix of interfaces you require: I2S, TDM, S/PDIF, ADAT, MIDI
- Powerful RISC and DSP instructions for complex signal processing algorithms, mixers and level meters
- Lowest BOM-cost of any solution in the industry
Hardware
USB Audio 2.0 Reference Design
USB Audio 2.0 Multichannel Reference Design
Documentation
Configuring the Thesycon Windows Driver for USB Audio
Software
S/PDIF
I2S
Adding DSP to the USB Audio 2.0 L1 Reference Design
Class D Audio Power Amplifier
Class D Audio Power Amplifier - iPod Dock
USB Audio 2.0 MC Hardware Manual
USB Audio 2.0 MC Quick Start Guide
USB Audio 2.0 Ref Design XS1-L1 Hardware Manual
USB Audio 2.0 Reference Design XS1-L1 Quick Start
USB Audio Software Design Guide
USB Audio 2.0 Reference Design Product Brief
XMOS USB and USB Audio System Requirements Guide
Design Files
USB Audio 2.0 MC Ref Design BOM
USB Audio 2.0 MC Ref Design Gerbers
USB Audio 2.0 MC Ref Design PCB Files
USB Audio 2.0 MC Ref Design Schematics
USB Audio 2.0 Ref Design XS1-L1 BOM
USB Audio 2.0 Ref Design XS1-L1 Schematics
USB Audio 2.0 Reference Design XS1-L1 Design Files
USB Audio 2.0 Reference Design XS1-L1 Gerbers



