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USB Audio interface

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Edel
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USB Audio
interface

Description

The Edel USB to I2S/SPDIF interface is an easy to integrate OEM solution for
High End USB audio playback systems, supporting both USB Audio Class 1.0 and
2.0.

USB streaming is based on an asynchronous protocol, clocked by low jitter on
board oscillators. Using this concept, the design benefits of a local high
quality master clock to achieve jitter-free playback and bit-perfect data
transfer.

External master clock synchronization is provided for enhanced flexibility
and optimal clock distribution.

Full galvanic isolation avoids any interference issues between the audio
device and the USB host. Critical components are powered by an external source
to ensure optimal performances. The interface can also be configured to use bus
power only, useful for using the board as a simple USB to S/PDIF mobile
interface.

Features

USB 2.0 High Speed compliant & USB Audio Class 1.0 or 2.0 supported
(user selectable)

2-channel asynchronous endpoint for stereo jitter-free playback

On board low jitter oscillators

External master clock input

Resolution up to 24-bits, sampling rate up to 192kHz (96kHz for USB Audio
Class 1.0) I2S and S/PDIF output

Full galvanic isolation

Based on XMOS XS1-L1 controller/DSP in 128TQFP package and SMSC USB3318
USB PHY.

Windows USB Audio Class 2.0 driver available

Documentation

Edel USB interface data sheet

Driver

USB Audio Class 2.0 driver for MS Windows available here for
download

Contact us

ABC PCB Sàrl
Chemin d’Etraz 2
CH-1027 Lonay

Switzerland
Phone: + 41 21 534 39 66

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