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Streamline your development with our complete Bluetooth audio solution. The FSC-BT1036x module & AT commands simplify integration, featuring Bluetooth 5.2, 24-bit audio, and a rapid development path for speakers, and transmitters.

 

 Complexity of Wireless Audio Design

Bringing a high-quality wireless audio product to market is a significant engineering challenge. Beyond the core audio design, developers must grapple with the intricacies of RF (Radio Frequency) engineering, embedded Bluetooth stack development, power management, and stringent certification processes. This complexity often leads to prolonged development cycles, increased costs, and delayed time-to-market. What if there was a way to abstract this complexity, allowing you to focus on your product’s unique audio experience and user interface? The FSC-BT1036x series from Feasycom presents precisely this opportunity, offering a complete, pre-certified Bluetooth audio solution  that is both powerful and remarkably simple to implement.

 

 Complete System-on-Chip Module

The FSC-BT1036x is not just a simple Bluetooth radio; it is a fully integrated Bluetooth 5.2 dual-mode module series. This means it supports both Bluetooth Classic (BR/EDR) for high-fidelity audio streaming via profiles like A2DP and hands-free communication via HFP, as well as Bluetooth Low Energy (BLE) for low-power data communication. At its heart is a System-on-Chip (SOC) that integrates an ultra-low-power DSP, an application processor, embedded flash memory, a high-performance stereo codec, and a power management subsystem.

 

Configure Bluetooth function with AT commands

The most significant feature that accelerates development is the Feasycom firmware, which is pre-loaded onto the module. This firmware encapsulates the entire complexity of the Bluetooth protocol stack into a straightforward set of human-readable ASCII commands, known as AT commands.

Think of the FSC-BT1036x as a “Bluetooth modem.” Instead of writing complex, low-level code to manage Bluetooth operations, your main application processor (or even a simple microcontroller) simply sends plain-text commands over a UART (serial) interface. This approach dramatically reduces development risk and time.

 

Key advantages of this AT command interface include:

Rapid Prototyping:  You can test and validate all module functionalities using a simple serial terminal program like ‘Feasycom serial port tool’ or ‘Tera Term’ before writing a single line of integration code.

Reduced Firmware Overhead:  Your host microcontroller doesn’t need a powerful processor or a vast amount of memory to run a complex Bluetooth stack. It only needs to send and receive simple strings.

Unified Control Plane:  All aspects of the module,from Bluetooth connections and audio streaming to GPIO control and device configuration are managed through the same consistent UART interface.

 

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 AT Command Capabilities

The AT command set, detailed in the FSC-BT1036x manual, provides comprehensive control. Here’s how it translates into real-world functionality for your Bluetooth audio solution:

1.Bluetooth Connection Management:  Commands allow you to set the device name (AT+NAME), make it discoverable (AT+PAIR),  scan the nearby Bluetooth devices (AT+SCAN),   connect audio devices (AT+A2DPCONN) and so on. This handles the entire lifecycle of a Bluetooth connection without deep protocol knowledge.

2.Audio Profile Control:  The module supports a wide array of standard profiles(A2DP/AVRCP/HFP). You can use the AT+PROFILE command to select whether to configure the module for audio transmission or audio reception, and you can control audio playback (play, pause, skip) via AVRCP commands and manage voice calls (answer,hang up, volume control) via HFP commands seamlessly.

3.Flexible UART Configuration:  While the default UART setting is a reliable 115200 baud, 8 data bits, no parity, and 1 stop bit, the system is highly flexible. The baud rate can be configured from 2400 to 1382400 bps to match your host processor’s capabilities.

 

High-fidelity audio

A simple interface does not mean a compromise on quality. The FSC-BT1036x is built to deliver exceptional audio performance that is critical for any modern Bluetooth audio solution.

  1. 24-bit Hi-Res Audio: The integrated 24-bit ADC (Analog-to-Digital Converter) and DAC (Digital-to-Analog Converter) ensure that audio is captured and reproduced with high fidelity and a wide dynamic range, minimizing noise and distortion.
  2. Sample Rate Support: The module supports a vast range of sample rates, from standard 8 kHz for voice communication up to a high-end 48 kHz. This flexibility allows it to be used in everything from telephony to high-resolution music streaming.

 

Hardware and Layout Considerations

Successful integration of this Bluetooth audio solution  requires attention to hardware design. The module series offers different form factors (like the compact FSC-BT1036A and the larger FSC-BT1036C) to fit various product sizes.

Critical to performance is the PCB layout, especially around the antenna. For modules with an internal antenna, it’s vital to follow the recommended “restricted area” guidelines, keeping copper and metal components away to prevent signal degradation. The datasheet provides clear layout guidelines to ensure optimal RF performance.

We provide services for checking schematic diagrams and PCB drawings to ensure that user designs can function properly

 

conclusion

The FSC-BT1036x, with its powerful AT command interface, represents a paradigm shift in developing wireless audio products. It effectively de-risks the development process, reduces time-to-market from months to weeks, and provides a robust, high-fidelity foundation for your product. By choosing this integrated Bluetooth audio solution, you can redirect your engineering resources from overcoming wireless protocol hurdles to innovating on user experience and sound quality, the features that truly differentiate your product in the marketplace.