USB2.0 soundcard 192kHz 10in / 10out reference design


(Picture shows a daughterboard for Microchip's ATSAMA5D2B-XULT eval-board, developed for testing and performance validation only, not available for sale.)


Ploytec GmbH specializes in designing with Microchip products. Visit the Microchip Technology web site for more information by clicking here.


•  USB 2.0 High-Speed (480MHz) Audio / MIDI system
•  Leading edge performance technology based on an affordable, low current chipset
•  32-bit audio processing with 10 input and 10 output channels
•  Optionally up to 20 input and 20 output channels at max. 96kHz
•  Optionally up to 40 input and 40 output channels at max. 48kHz
•  Samplerates: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz or 192kHz
•  USB2.0 bus- or self-powered power supply mode
•  Sensationally low jitter using an on-chip audio PLL
•  Audio PLL can be synced to USB SOFs for synchronous applications
•  No samplerate conversion or clock recovery for true 1:1 audio
•  Assignable stereo (1/4” TRS) line input and headphone output on the eval board
•  Assignable Digital Interface (coax) for S/PDIF or AC3/DTS on the eval board
•  Up to five MIDI input and output ports (fast USB2.0 I/O bulk transfer)
•  Can be slaved to any I2S digital audio interface (CODEC or DIR/DIT as master)
•  Optional DSD support up to octuple-rate (DSD512)
•  Based on the low cost (<EUR 4.00) 32-bit high performance Microchip® ATSAMA5D21 microprocessor


•  For Windows (7, 8 and 10; 32-bit and 64-bit), Mac OS X and iOS systems
•  Optional Apple MFi certification possible
•  Multi-application mode - simultaneous ASIO and/or WDM playback
•  Extremely low latency Windows ASIO and WDM driver (adjustable in multiple parameters)
•  Default USB interrupt mode transactions on Windows for better performance
•  Fully USB Audio Class 2.0 compliant (isoc asynchronous mode)
•  Optionally compatible with the Windows 10 Fall Creators Update's Class 2.0 support
•  Software installer and advanced ASIO control panel for Windows


•  Firmware updating via USB for programming future updates
•  ARM NEON™ based 192kHz 10x10 audiomixer in firmware (low latency monitoring)
•  Direct USB2.0 tripple buffer capture and playback for lowest technically achievable latency
•  Long term design experience with hundreds of thousands of USB Audio units licensed worldwide