XMOS USB Audio Interface for iPad


  • XMOS USB Audio solutions utilise High Speed USB 2.0 with 480Mb/s of audio data, delivering 24-bit audio, sample frequencies up to 192kHz and from 2 to 40 audio channels. The highly flexible XMOS devices allow you to taylor your solution to the exact mix of interfaces and digital processes for your product.
  • The XMOS USB Audio Interface for iPad simplifies the design of products requiring USB connectivity to audio and control interfaces for Mac, PC and iPod, iPhone and iPad devices. Using High Speed USB 2.0, it allows high quality digital audio, MIDI and control data to be transferred between the host Mac, PC or iOS device and the XMOS interface.
  • The XMOS solution implements USB Audio Class 2.0 and USB MIDI interfaces for the widest iOS application compatibility. It auto-selects between USB and 30-pin connections, enabling seamless connection to Mac, PC and iOS devices.



  • Complete reference design - the fastest route to production
  • Stereo audio input via I2S
  • Stereo audio output via I2S
  • Bit perfect digital audio data, 24-bit
  • MIDI I/O
  • Supports the following sample frequencies: 44.1, 48, 88.2, 96, 176.4, 192kHz
  • The industry's lowest round-trip audio latency
  • Supports iPad, iPhone, iPad devices that support USB host mode and USB audio standards (iPad, iPad 2, iPhone 4, iPhone 4S, iPod Touch 4G)
  • iPad, iPhone and iPod charging
  • Mac and PC connectivity via USB
  • XMOS XSYS debug header for easy programming/debug from the host using the XMOS XTAG2 debug adapter



Driver Support

  • XMOS USB Audio Class 2.0 is supported by Apple OSX version 10.6.4 and above - no driver install required. 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.
  • An evaluation Thesycon Windows driver is supplied for use with reference designs. The Thesycon production driver is available through XMOS as a separate part number which bundles the driver with the XS1-L devices*, not requiring any upfront NRE fees, or through Thesycon directly using a customer negotiated payment model.
  • An evaluation Windows driver is available from the CEntrance or Ploytec, and production drivers are available directly from CEntrance and Ploytec.
  • Developers who want to customize the Windows drivers must provide their own USB VendorID/ProductID and Verisign Authenticode Certificate. See Configuring Windows Drivers for USB Audio for details.
  • * Access to the Thesycon production driver via the bundled part (XS1-L01A-TQ128-C5-THS/XS1-L01A-LQ64-C5-THS/XS1-L01A-TQ48-C5-THS) is subject to a minimum order quantity.



 USB Audio 2.0 Reference Design Product Brief