Xmos Xu208

[Miriam]

Thefirmware in our XU208 and XU216 stereo PCB is compatible with the default windows inbox usb audio 2.0 driver. No extra driver installation is needed and the XU208 PCB can support 384k PCM I2S in out for stereo playback and recording.

The firmware in our XU216 multichannel PCB is designed to require additional driver installation for use in Windows 10/11(as of 202203). The full feature version windows signed driver is available in the our store.

For the latest version of MAC and Linux, no driver installation is needed for all of our xmos PCB. Please notes Windows default inbox driver does not support ASIO, it only support WASAPI to playback PCM and DSD.

For normal usage, the sound quality is the same. The default inbox windows usb audio 2.0 driver has a little bit higher latency, but it only affect advanced recording usage. If the room environment contains a large amount of EMI noise(from the behind equipment), our XU216 pcb with the full feature version driver can sound better technically due to the feedback method used.

1) XMOS XCORE-200 XU208 with 1 Tiles 8 Cores upto 1000MIPS real time processing power in dual issue mode. The latest xmos xCORE-200 includes unique hardware divider and it is used to generate the I2S bit-clock from the oscillator directly(old xmos BGA U8 uses software divider). Asynchronous reclock usb audio data to I2S signal for all the modern DAC standard input.

6) Sampling rate and bits depth is displayed directly on the 128x64 OLED panel. OLED display is the latest technology with highest contrast, complete dark background, full viewing angle and it looks much better than the commonly used LCD display

9) PCB is powered by external 3.3V 800mA regulated supply on the white JST-XH 2pin 2.54mm spacing socket, it is usually connected to the same 3.3v digital power DAC is using(warning: over-voltage or reverse-voltage can damage the xmos chip immediately, double check before power on)

5. This 384K PCB is pin to pin compitiable with our original BGA XMOS 384k PCB, user can replace and upgrade directly. The DIN for ADC input is assigned to one of the middle pin in the 20pin header, this pin is used for ground in the old pin assignment.

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