RealMCU

Bluetooth Auracast™ broadcasting total solution - A complete solution to enable Auracast broadcasting in your application

Our solution facilitates seamless Auracast broadcast transmission, reception, and assistant functionality, fully integrating these capabilities into your system to create a comprehensive Bluetooth broadcast application. Leveraging the advanced computing power of a multifunctional MCU and DSP combination, you can effortlessly implement specialized application processes. Additionally, our solution supports display capabilities, providing Auracast assistant displays for presenting visual information. With a wide range of audio interface options, including I2S, USB, and analog ADC, our solution offers extensive flexibility for connecting to various external audio sources.

System Structure

The RTL8763E serves as the primary Auracast controller, interfacing with the audio source from the audio processor through I2S or UART. Additionally, the RTL8763E can independently receive analog signals from a line-in or a physical microphone. Its integrated Bluetooth module facilitates Auracast broadcast functionality, making it a fully equipped transmitter.

The RTL8763E Bluetooth receiver solution can scan for wireless audio from Auracast transmitter devices. It also connects to an Auracast assistant device, decoding the broadcast parameters of the selected program from the assistant. The receiver then configures these parameters to receive the specific wireless audio signal from the Auracast transmitter and plays it back through the output device.

The RTL8763E serves as the Auracast Assistant, scanning and managing audio streams from Auracast transmitters. It assists in discovering available transmitters and their respective audio streams, providing users with channel information and metadata to make informed choices. The RTL8763E offers an I8080 interface and an SPI display interface, enabling developers to connect a screen that allows end users to browse, select, and switch between different audio streams with ease. The assistant communicates the chosen channel information to the Auracast receiver and decodes the necessary parameters for seamless configuration.

Application Scenario

Auracast broadcast audio application in a simultaneous translation of speeches

Simultaneous translation of speeches

In a lecture hall, the interpreter translates the lecturer's speech into different languages. An Auracast broadcasting audio system transmits audio directly to participants' devices, ensuring clear sound even in large spaces. This system supports multiple language channels to cater to diverse linguistic needs. The Auracast assistant displays the broadcasting menu, helping participants select their desired language for their Bluetooth headsets.

Auracast broadcast audio application in guided group tours

Guided group tours

Integrating Bluetooth Auracast into a tour system allows the tour guide to broadcast audio seamlessly to all participants' devices, enhancing clarity, accessibility, and overall tour experience.

Auracast broadcast audio application in a fitness room

Audiovisual fitness classes

In a fitness class, the instructor can use Bluetooth Auracast to broadcast music or verbal cues to participants wearing auracast enabled bluetooth headset. This can help to create a more immersive and engaging workout experience.

Advantages of Solution

Rich external interfaces

Supports I2S, Line In to connect audio data; while digital interfaces such as GPIO/I2C/UART/SPI can be connected to a wider range of sensors or external devices.

Supports lithium battery charging

Equipped with a lithium battery charging function, it can provide a charging current of up to 300mA (Constant Current Mode). This allows it to charge small mobile devices with built-in lithium batteries, reducing the need for additional PCB circuit components.

Supports display functionality

Equipped with I8080 and SPI display interfaces, it allows developers to connect a screen for showing information. This can be used to display internal information for transmitters and receivers or to present program listings on an assistant device.

Integrates multiple Bluetooth modes

Equipped with Auracast transmitter, receiver, and assistant roles, it enhances the variety of products customers can design, enabling the complete development of an entire Auracast product application.

Completed development kits

Fully-featured SDK, including a variety of product prototype projects such as Auracast transmitter, receiver, and assistant example code, and mobile App SDK, OTA Tool, significantly reduces the design time and accelerates project mass production.

Start implementing my bluetooth auracast broadcasting total solution application

Define the application requirements

Choose an IC solution

System architecture design

Design the Hardware

Develop Firmware/Software

Test and Debug

Build prototypes and validation

Recommended Hardware

Choose the SoC that suits your design requirements

	RTL8763EAU	RTL8763EFL	RTL8763EWE-VP
Application	Auracast transmitter	Auracast receiver	Auracast assistant
Package (mm)	QFN50 4x6	QFN40 4x6	QFN68 7x7
Protocol	Legacy/BLE/LEA	Legacy/BLE/LEA	Legacy/BLE/LEA
Max MCU clock	100MHz	100MHz	100MHz
SRAM	578KB	578KB	578KB
MCM flash size	4MB	4MB	No
MCM PSRAM size	No	No	4MB
USB	Yes	No	No
LCD interface	No	No	I8080/QSPI
MIC resource	2A + 4D	3A + 4D	2A + 4D
Max GPIO number	12	9	38
Series	RTL8763E >	RTL8763E >	RTL8763E >

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