Matrix X-spdif 2 User Manual

EN

www.matrix-digi.com

Manual

1

Summary

● X-SPDIF 2 USB Audio Class 2.0 is a new designed asynchronous data

transmission digital interface, which inherited the high quality of last
generation to make it connect to the other devices through IIS directly. It
crossed the quality lost of digital signal caused by protocol conversion, while
integrated the high-quality femtosecond clock and FPGA processing unit, to
realize a maximum of 32bit/768kHz for PCM signal and 1bit/DSD512 for
signal output.

● The XMOS 8-core new generation X-CORE XU208 digital signal processing

unit is the most advanced solution to USB Audio Class 2.0 digital audio with
strong processing capacity for multi-core and multi-threading.

● The powerful XILINX SPARTAN FPGA assisting with XMOS to premium manage

the clock and process IIS data, achieved the DoP code conversion and remove
the jitter in IIS port.

● Two pieces ACCUSILICON high-quality femtosecond clock as basic clock

source, and respectively work for 44.1kHz and 48kHz as well as several times
sampling rate, which is controlled by FPGA to do the frequency division and
switch automatically. Besides, femtosecond has an independent ultra-low
noise LDO power supply circuit.

● The inner multi-level and multi-group LDO combined with solid-state

capacitor, which can filter the superposed noise in the power supply. All the
circuit units are supplied by the low or ultra-low noise LDO without DC/DC
circuit to avoid high frequency switching noise. Even if using USB bus power
supply, it can also maintain the high quality for the internal power supply.

● With the external power supply por t, convenient to upgrade the external

linear power supply. The device will auto-disconnect the USB bus power
supply after connected the external power supply, and can be connected to
the devices which do not suppor t power output, such as mobile phone.

Summary

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1

LED Indicator status

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Front Panel

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Coaxial Output

Optical Output

AES Output

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2

3

AC Power Input

IIS Output

USB Input

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5

6

4

1

2

5

63

Rear Panel

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● Optical/Coaxial/AES

The Optical / Coaxial/AES Port can output a maximum 24bit/192kHz sampling

rate of PCM signal and 1bit/DSD64 for DoP which are meet the SPDIF coding
standard and DoP coding standard.

Note: When the front-end devices transfer DSD through Native coding mode,

the SPDIF output will turn off, because Native-coded DSD signal can only
output from IIS port.

● IIS port

IIS port can output a maximum 32bit/768kHz sampling rate of PCM signal.

Native coding mode can output DSD64/128/256/512 of DSD signal;

DoP coding mode can output DSD64/128/256 of DSD signal.

Settings & Usage

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