TI's Bluetooth and MSP430 audio sink reference design offers a cost-effective solution for developing low-power, entry-level audio applications. This design is ideal for products such as toys, budget Bluetooth speakers, and audio accessories that require simple yet reliable wireless connectivity. By providing complete design files, it allows developers to focus on their end product development rather than starting from scratch. The reference design is supported by the Stonestreet One Bluetopia Bluetooth stack, which is certified and royalty-free, ensuring a smooth and compliant implementation.
The Bluetooth and MSP430 audio sink reference design combines the power of Texas Instruments' Bluetooth technology with the efficiency of the MSP430 microcontroller. It enables audio processing to be offloaded from the MCU to the Bluetooth device, resulting in lower overall power consumption and improved performance.
Key features of this design include:
- Bluetooth audio support using SBC encoding/decoding
- Low-cost, low-power solution based on the MSP430F5229
- 4-layer PCB layout and compact QFN package for easy integration
- Utilizes the high-performance CC2564 chip with +12dBm output power
- Includes the TAS2505 low-power digital speaker amplifier and BQ24055 USB charge management IC
- Supports a single Bluetooth final product list due to the QDID certification of both CC256x and Bluetopia stacks
This reference design is particularly suitable for applications requiring wireless audio transmission with minimal power usage, such as portable devices, smart home accessories, or wearable tech. Its modular approach makes it easy to adapt to different use cases without significant redesign efforts.
Related components used in the design include:
1. **BQ24055** – An 800mA single-input, single-cell Li-Ion battery charger with automatic AC/USB detection and power good (PG) signal. It ensures efficient and safe charging for portable audio devices.
BQ24055 function block diagram
2. **CC2560 Bluetooth Smart Ready Controller** – Part of TI's CC256x family, this device provides a complete Bluetooth BR/EDR/LEHCI solution. It supports Bluetooth 4.0 Dual Mode and reduces design complexity, accelerating time-to-market. With advanced power management features, it delivers excellent performance while minimizing energy consumption across all Bluetooth modes.
Applications for this design include smart lighting systems, HMI (Human-Machine Interface) boards, and POS (Point-of-Sale) devices where wireless audio and low power are key requirements.
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