York USB Audio Interface

The York USB interface module offers flexibility for use in wide range of applications than just a regular USB to I2S interface. It combines UAC2 interface for audio input and output and HID interface for user control, such as I2C transactions and GPIO control.

Features

• Flexible Configuration: Device settings and firmware updates can be managed through a dedicated PC utility.
• HID Interface: Service information and device configuration.
• Optional Serial Interface (virtual COM port)
• Multiple Audio Output Options: Supports I2S, S/PDIF,  TDM and interfaces for NOS DACs (e.g., AD1862, PCM63, TDA1541 etc).
• Various Clocking Options: Includes module oscillators, external clock (slave mode), and internal PLL clocking.
• I2C Integration with DSP: Allows simultaneous audio input/output and DSP programming, like ADAU1452/67
• No drivers required for Windows 10/11, Linux, MacOS, Android, iOS. 
• Bootloader: Enables easy and fail safe firmware update.

Audio Interface Capabilities

• Input: Up to 8 channels, up to 192kHz (384kHz with external clocking).
• Output: Up to 8 channels, up to 192kHz (384kHz with external clocking).

Device is based on PIC32MZ MIPS MCU with integrated High-Speed USB PHY. It has DSP extension instruction set enabling optional on-board DSP features.

Module is equipped with low noise 22.5792 and 24.576MHz audio clocks for 44.1 and 48kHz grids which are used to clock MCUs audio interface. The oscillators are powered by dedicated low noise LDO. External clocking option is supported with frequencies of 256/512/1024fs (where fs = 44.1/48kHz).

York supports direct connection to I2S and TDM DACs/ADCs, as well as old PCM DACs (such as AD1862, PCM63, TDA1541) with option of oversampling.

All device parameters can be accessed with a cross-platform configuration tool 

Documentation and config tool available on the website: https://york.eclipsevl.org