USB Audio
DAC Output
SPDIF Output
Digital Input
Control Interface
USB HID Consumer Control
USB-HEAR Module
The FC301 USB-HEAR Module is a microcontroller-based USB audio receiver solution for HiFi DAC and amplifier applications. It is implemented as a system on module (SoM) which enables easy and rapid integration.
The FC301 USB-HEAR Module implements a USB audio class 2.0 compliant PCM and DSD playback interface compatible with Windows 11/10, macOS and Linux hosts. For Windows, a bit-perfect, high-res audio driver is available.
For proper integration with a DAC, the module supports an external master clock input. The receiver can be controlled and monitored through an I2C register interface and a set of control and status lines.
Typical Application
Feature Overview
USB Audio
- USB audio class 2.0 compliant isochronous streaming, two audio channels (stereo)
- Asynchronous clocking model, USB playback stream is synchronized to master oscillator
- 32-bit PCM sample format up to 768 kHz sampling rate
- Native DSD up to DSD1024, compatible with Windows driver and Linux
- DSD over PCM (DoP) up to DSD256
- ASIO compatible (DSD and DSD over PCM)
DAC Output
- I2S compliant digital interface for connecting a digital-to-analog converter
- 32-bit PCM format up to 768 kHz sampling rate
- DSD format up to DSD1024
Control Interface
- Control and status register set accessible via I2C
- Interrupt status line for notifications on status register changes
- Status lines for master clock selection, PCM/DSD format selection and DAC mute
Digital Input
- I2S compliant digital interface for connecting external digital sources such as a streaming client or tuner
- 32-bit PCM format up to 192 kHz sampling rate
SPDIF Output
- 24-bit PCM format up to 192 kHz sampling rate
USB HID Consumer Control
- Multimedia key events can be sent to the host to control a player application
- For example: Volume Up, Volume Down, Play, Pause, Fast Forward, Fast Backward etc.
Technical support is provided directly by the developers.
USB-HEAR DevKit
The FC920 USB-HEAR DevKit comes as a Raspberry Pi format compatible Kit for direct usage of FC301 USB-HEAR Module. Mounting holes and pin-connector are identical to Raspberry Pi 3A+ Format to use existing Audio extensions as easy as possible.
The DevKit includes pre-soldered FC301 USB-HEAR Module and all needed cables for power-up and SPDIF extension.
To start using the FC301 USB-HEAR Module, the FC920 USB-HEAR DevKit can be used as reference, evaluation and validation environment.
Typical Application
Feature Overview
USB Audio
- USB audio class 2.0 compliant isochronous streaming, two audio channels (stereo)
- Asynchronous clocking model, USB playback stream is synchronized to master oscillator
- 32-bit PCM sample format up to 768 kHz sampling rate
- Native DSD up to DSD1024, compatible with Windows driver and Linux
- DSD over PCM (DoP) up to DSD256
- ASIO compatible (DSD and DSD over PCM)
DAC Output
- DAC output directly on Raspberry Pi Connector
- I2S compliant digital interface for connecting a digital-to-analog converter
- 32-bit PCM format up to 768 kHz sampling rate
- DSD format up to DSD1024
SPDIF Output
- Optical SPDIF output connector
- 24-bit PCM format up to 192 kHz sampling rate
Raspberry Pi Add-ons
- Raspberry Pi compatible connector
- Direct usage of standard Raspberry Pi Add-on
boards (Audio Hats)
Windows 11/10
Linux
macOS
Android
FibreCode GmbH
Marie-Curie-Straße 9 | 76275 Ettlingen | Germany
+49 (0)151 2716 1688 | info@fibrecode.com
FibreCode provides USB High-End Audio Receiver Module and Development Kit.
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