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Application Overview
Bluetooth Auracast™ Broadcast Audio Solution – Complete Integration, Ready for Deployment

Auracast™ is a breakthrough technology based on the Bluetooth LE Audio specification. It offers an efficient and convenient solution for public broadcasting and multi-device audio sharing, drastically transforming the way people interact with others and surrounding environment.
Realtek has launched a comprehensive solution that fully supports Auracast™ Transmitter, Receiver, and Assistant roles. This solution can assist customers in rapidly developing diverse products. In terms of technical implementation, the solution provides a wealth of interface options such as USB, Line-in, SPDIF, I2S, SPI, I8080, and QSPI, enabling flexible connections of various peripherals. It supports a variety of audio sources and display devices, capable of real-time, intuitive presentation of audio parameters and device status. At the same time, it offers convenient interactive operations, further enhancing user experience. With the high-performance MCU and powerful computing capability of the DSP, customers can rapidly and flexibly develop various Auracast™ applications, catering to diverse needs in various scenarios.

System Structure

Dual mode Bluetooth microcontroller is capable of implementing an audio transmitter that supports multiple audio input interfaces such as USB, SDIO, MIC, Line-in, SPDIF, and SPI/I2S. This capability allows the device to connect seamlessly with external audio sources including TVs, computers, and stereo systems. After receiving the audio signal, the transmitter delivers the sound to compatible Bluetooth headsets, speakers, and other receiving devices. In wireless audio transmission, this device serves various functions: As an A2DP source device, it supports wireless transmission of high-quality stereo audio to Bluetooth headphones. As an HFP Audio Gateway (AG), it enables voice communication with Bluetooth headphones via SCO/eSCO links. Additionally, the device supports the LE Audio standard, including Broadcast Audio Stream (BIS) and Connectionless Audio Stream (CIS), allowing efficient transmission of audio data from multiple sources to Bluetooth headphones and delivering a stable and high-quality wireless audio experience. The rich set of interfaces and support for multiple Bluetooth roles ensure the system's flexibility and compatibility, meeting the needs of a wide range of audio application scenarios.

Application Structure

The RTL87x3BFx series chips are designed specifically for Realtek's dual-mode Bluetooth Data-Transfer solutions, featuring a complete built-in Bluetooth protocol stack that supports GATT, SPP, and iAP protocols, while simultaneously supporting BR/EDR Slave, BR/EDR Master, BLE Peripheral and BLE Central roles. The chips connect to external controllers via serial interfaces and offer a rich set of flexible control commands, allowing devices to easily integrate Bluetooth functionality.
Additionally, the RTL87x3BFx series provides Bluetooth SoC Data Transfer SDK, which facilitates customization and further development of solutions, flexibly addressing diverse functional requirements for different application scenarios.

Application Structure

Dual mode Bluetooth microcontroller can be used to implement an audio receiver  solution. It is not only capable of receiving signals from an audio transmitter, but also supports various audio input/output interfaces such as MIC, speaker, and SPI/I2S. This audio receiver serves multiple roles in wireless audio transmission. As an A2DP receiver, it can receive and play high-quality stereo audio transmitted from a mobile phone; as an HFP hands-free device (HF), it enables voice communication via the SCO/eSCO link. Additionally, the device supports the LE Audio standard, efficiently receiving both BIS and CIS audio, thereby providing a stable and high-quality wireless audio experience.

Application Structure

The RTL87x3, as an Auracast™ Transmitter, supports a variety of audio inputs such as USB, Line-in, SPDIF, and microphone, and can also connect to external audio processors through interfaces like I2S and SPI. While transmitting one or more audio streams for real-time listening by Auracast™ Receivers, it simultaneously broadcasts device names, audio content, and codec configuration information for Auracast™ Assistant devices to view and select.

Application Structure

The RTL8762EMF chip is specifically designed for smart locks, providing Bluetooth data passthrough functionality to enable wireless communication between devices.

Application Structure

As an Auracast™ Assistant, the RTL87x3 supports a variety of interfaces such as I8080, QSPI, etc, enabling flexible connections with various screens for intuitive browsing and control operations. The device will actively scan broadcast packets from surrounding Auracast™ transmitters and display the scanning results in real-time. After the user chooses a target channel, the Auracast™ Receiver will receive and play audio based on the configuration parameters provided by the Auracast™ Assistant.

Application Structure

Realtek's single-mode BLE SoC and dual-mode BT SoC platforms provide robust Bluetooth communication capabilities, integrating mainstream display interfaces and image processing engines within the chip. Coupled with a wealth of peripheral interfaces like SPI, I2C, CAN, PWM, and Keyscan, these platforms enable developers to fully unleash their creativity. The comprehensive product family makes it easy for developers to choose suitable and competitive solutions.
The Realtek SDK includes a complete user interface development toolkit, allowing developers to quickly bring their ideas to life. 

Application Structure

The Realtek RTL87x2G integrates USB 2.0 High-Speed and 2.4GHz wireless interfaces within a ‌single-chip architecture,‌ delivering a smooth ‌8K user experience‌ with ‌ultra-low latency‌‌. Additionally, its rich peripheral interfaces such as SPI, QDecoder, Keyscan, I2C, GPIO, and PWM enable developers to add advanced features for product differentiation while maintaining excellent power performance. The chip, combined with the mature and comprehensive Realtek SDK, development documentation, and related tools, allows developers to quickly realize their creative ideas.

Application Structure

The RTL8762CKF/RTL8762DKF-VS are dedicated control chips for smart locks, primarily responsible for connecting and managing various peripheral modules to implement basic lock functions. These low-power, fast-response chips do not support security features like fingerprint recognition and must be paired with a dedicated security chip to form a complete smart lock solution.

Application Structure

Dual mode Bluetooth microcontroller can be utilized to build an audio transceiver solution that adopts a dual-chip architecture. In this design, two RTL87x3 chips serve as the audio transmitter and audio receiver, respectively, with bidirectional data communication achieved via SPI or I2S interfaces. It features a dual-chip architecture, with two RTL87x3 chips operating respectively as the audio transmitter and the audio receiver, enabling bidirectional data communication via SPI or I2S interfaces. In addition, the solution facilitates seamless collaboration with external processors through the UART interface, supporting stable wireless audio data transmission between multiple devices. This design enhances system scalability and allows for flexible integration with a variety of external processors to meet a broad range of application requirements.

Application Structure

Bluetooth dual-mode Turnkey solution The RTL8761ATT is a highly integrated dual-mode Bluetooth transmission chip with a UART interface, embedded with the SPP Server/GATT Server Bluetooth protocol stack, and supports BR/EDR Master and BLE Peripheral roles.

The RTL8761ATT provides custom Data Transfer commands. The main control chip can invoke the built-in SPP and GATT data transfer functions of the RTL8761ATT using these instructions, thereby eliminating the need for Bluetooth protocol stack transplantation at the main control end.

Furthermore, RTL8761ATT also provides usage instructions and examples for custom Data Transfer command, helping developers quickly complete the development of the data transfer function at the master control end.

Application Structure

As an Auracast™ Receiver, the RTL87x3 sets up a connection with the Auracast™ auxiliary device and configures based on the user's selection in the interactive interface, achieving real-time reception and playback of the selected broadcast audio.

Application Structure

Thread Border Routing Solutions: RTL8771GUV and RTL8771HTV
This solution supports Thread RCP products connecting to host devices such as PCs, TVs, speakers, and set-top boxes via USB or UART interfaces. Combined with the host-side Thread protocol stack and Wi-Fi/Ethernet functionality, it implements Thread Border Router functionality for cross-network communication.
Matter over Thread Device Solutions: RTL8777GKF and RTL8772GWP
This solution is suitable for Matter over Thread end devices and can be integrated into home and industrial control products, such as washing machines, air conditioners, sockets, switches, lighting, door locks, and curtains.
Thread Border Routing SoC Solutions: RTL8772GWP
This chip is not only suitable for Thread end devices but can also be used to build Thread border routers, providing a complete SoC solution without relying on host devices such as PCs, TVs, speakers, and set-top boxes. 

Application Structure

The RTL8762 series Bluetooth Mesh solution supports the combination of advertising and GATT connections to build a mesh network, enabling the interconnection of all devices in smart home scenarios.

Application Structure

RTL8772GWF & RTL8762GKH are Bluetooth SoC Solutions optimized for smart locks.
RTL8772GWF features a Real-M300V 125MHz MCU (Cortex-M55 compatible) with ample SRAM resources to support fingerprint algorithm processing. It integrates hardware-level security mechanisms like Trust Zone and has obtained PSA-L2 certification, providing financial grade security for smart door lock applications. The QFN88 package offers up to 56 general purpose GPIOs, supporting rich peripheral interfaces through pin multiplexing, making it suitable as a single-chip solution for smart door locks.
RTL8762GKH also provides sufficient computing power for fingerprint algorithms while maintaining PSA-L2 security level. Its compact QFN48 package is designed for main control solutions requiring fewer peripheral interfaces.
Realtek partners with financial grade security solution providers to deliver complete security solutions from chip to system level, accelerating smart door lock product development and deployment.

Application Structure

Realtek offers flexible HMI system solutions with mature and stable UI designs and efficient integration technologies, helping a wide range of clients to quickly complete technology selection and enter the rapid development and acceptance phase based on their specific needs.
For gateway devices, Realtek provides cost-effective dual-frequency solutions, ensuring 100% uptime for gateway devices such as 15.4/BLE Mesh, reducing the probability of event loss. For clients with high QoS requirements, Realtek offers Ethernet interfaces to ensure more stable communication between long-distance nodes. CAN and other interface technologies provide integrated advantages for industrial users and vehicle application scenarios.
Realtek has integrated a series of mature SDKs including Wi-Fi, LWIP, Thread, Matter, Classic Bluetooth, and BLE Mesh. In terms of UI support, Realtek offers several UI engines such as Honey GUI, RVD (Realtek Visual Designer), and LVGL (Light and Versatile Graphics Library) to meet different design requirements according to client needs.

Application Structure

For Apple Find My tag, Gsensor and buzzer are two essential peripheral components. The typical architecture diagram is as follows:

Application Structure

Realtek smart watch solution based on RTL8773E uses a single BT SoC as the main controller. It connects to peripherals via interfaces such as SPIC, I2C, SPI, GPIO, I8080, MIC, and DAC, and connects to phones via Bluetooth to create a highly integrated smart watch solution.
Realtek provides reference designs, SDK, and toolchains, characterized by high integration and ease of development.

Application Structure

The RTL8762CMF/RTL8762EMF is a Bluetooth Low Energy SoC solution specifically designed for low-power applications. With its outstanding power management, it significantly extends the battery life of devices, making it the preferred choice for power-sensitive products. 
The RTL8762CMF/RTL8762EMF can be quickly configured via AT commands, and supports BLE Peripheral and Central Roles, eliminating the need for complex development processes and shortening the product time-to-market. 
Additionally, the RTL8762CMF/RTL8762EMF offers BLE SoC Data Transfer SDK, which allows users to customize and further develop their solutions, flexibly meeting diverse functional requirements for different application scenarios.

Application Structure

Dual mode Bluetooth microcontroller can be used to build an audio transceiver solutions. Compared to the dual-chip architecture, it utilizes a single-chip architecture that integrates both an audio transmitter and a receiver. The advantage of this solution lies in its careful optimization of system parameters, achieving a good balance between cost, bandwidth, and functionality, while integrating both transmission and reception functions, thereby reducing overall costs and simplifying the development process.

Application Structure

Practical Application Case

Application Cases
Application Cases

The Bluetooth Mesh 86 Box based on the RTL8762 series is a network management hub (Provisioner) with an integrated screen. It supports device provisioning, network status monitoring, and smart scenario control. Through touchscreen interaction and multi-protocol coordination capabilities, it delivers a visual, low-threshold user experience for whole-home smart systems.

1 Device Provisioning & Network Management
a. Visual onboarding guidance: One-click device discovery and addition via graphical interface.
b. Network security management: Multi-user permission control (admin/guest modes) to restrict device operation scopes.

2 Multi-mode Interaction & Control
a. Touchscreen interaction: Directly control lights and view device status via the screen.
b. Scenario quick-access: Customizable scenario panels for one-trigger multi-device coordination.

Application Cases

From a technical perspective, Find My tag can support both Apple Find My and Google Find My protocols, enabling the same tag to be located and searched for by both iOS and Android devices. However, in the actual implementation of the solution, how to run the two protocols on the same tag must strictly follow the protocol specifications of Apple and Google.

Application Cases
Application Cases

The Bluetooth Mesh smart lighting system based on the RTL8762 series can wirelessly receive control commands from switches, sensors, or gateways. It parses dimming instructions and responds to status queries through Lighting Models while also serving as a relay node to extend network coverage.

1. Support for Standardized & Custom Models
a. Standard Models: Supports SIG Mesh Lighting Models (on/off/brightness/color temperature control), Scene Model (scene storage), and compatibility with mainstream ecosystem commands.
b. Custom Models: Provides Vendor Model Samples to support private function definitions (e.g., special lighting effects, customized device status reporting formats).

2. Multi-mode Network Control
a. One-touch group control: Simultaneous response for 200+ lights with high consistency.
b. Group addressing: Light grouping by room/function, supporting independent or coordinated operations.

3. Smart Scenario Integration
a. Localized rules: Light sensors trigger automatic dimming (configurable thresholds).
b. Cloud integration: Implements “Sunrise Mode” gradual wake-up via weather API synchronization.

Application Scenario

Bluetooth data-transfer application for fish tank environment monitoring
Application Scenario
Fish Tank Environment Monitoring Module

The module uploads aquarium monitoring data to a mobile device so that prompt alarms can be issued when anomalies occur.

Bluetooth data-transfer application for environmental monitoring
Application Scenario
Environmental Monitoring Module

The module uploads the environmental monitoring data to the mobile phone for data aggregation and analysis.

Bluetooth data-transfer application for POS machine
Application Scenario
POS Machine

Card information read by the POS terminal is sent to the smartphone via Bluetooth wireless connection.

Bluetooth data-transfer application for safe box
Application Scenario
Safe Box

The phone connects to the safe box via Bluetooth and carries out relevant operations wirelessly.

Bluetooth data-transfer application for printer
Application Scenario
Printer

The phone connects to the printer via Bluetooth and transmits print files wirelessly.

In-Vehicle navigation system
Application Scenario
In-Vehicle Navigation System

Single-Chip Integrated Vehicle Control Application and Map Navigation.

In-Vehicle navigation system (RTL87x3x platform)
Application Scenario
In-Vehicle Navigation System (RTL87x3x platform)

Navigation map images are transmitted via BT link (e.g. 360×240 pixels @2 FPS).

Auracast™ broadcast audio application in the simultaneous translation of speeches
Application Scenario
Multi-language Simultaneous Interpretation

The Auracast™ simultaneous interpretation system is suitable for venues such as large lecture halls and conference centers, supporting audiences to receive translated content in real-time through personal Auracast™ Receiver devices. The system broadcasts the interpreter's voice through the Auracast™ Transmitter, and users can choose the language on the Auracast™ Assistant interface to directly listen to clear and smooth translated audio. This solution is also compatible with hearing aid devices, providing accessibility support.

Bluetooth data-transfer application for power equipment
Application Scenario
Power Equipment

The phone connects to the power equipment via Bluetooth and switches on the circuit breaker.

Bluetooth record pen application
Application Scenario
Bluetooth Record Pen

The Bluetooth record pen is suitable for various scenarios such as meeting recording, interview and learning. It ensures high-quality audio preservation and transmission, supporting versatile functionalities including microphone capture, music recording, and call recording.

Ultra-Low latency operation response
Application Scenario
Low Latency and High Polling Rate

Ultra-low mouse reporting latency, with a polling rate of up to 8K, providing users with a 'what you see is what you get' experience.

Applications that meet customer needs in various scenarios
Application Scenario
Various Applications

Based on powerful computing and graphics capabilities, the watch can support a variety of applications: map navigation, mini-games, third-party apps, and more.

Applications in custom keyboards
Application Scenario
Custom Keyboards

Display the keyboard's connection status, device battery level, custom images, and lighting effect settings through a visual interface. 

Creating intelligent lighting environments for smart buildings
Application Scenario
Commercial Lighting

Users can easily control thousands of lights in a mall or parking lot through the Bluetooth Mesh network. By utilizing the multicast address feature of the Bluetooth Mesh network, users can also achieve zoned management of the lighting. This lighting system enables dynamic zonal dimming and energy consumption monitoring through the Bluetooth Mesh network, and it can also perform remote bulk firmware upgrades, thereby reducing wiring costs and operational complexity.

Empowering industrial automation and intelligent operations & maintenance
Application Scenario
Industrial Control

The relay mechanism of the Bluetooth Mesh network can cover complex factory environments and support networking with tens of thousands of nodes. This network can transmit device data to the control center in real-time, ensuring communication reliability through flooding and directed forwarding mechanisms, thereby enabling production line automation and predictive maintenance.

Enhance home security and convenience through smart lock system
Application Scenario
Keyless Secure Access

Based on Matter over Thread technology, the smart lock can securely communicate with smart devices such as mobile phones. Users can remotely control the locking and unlocking of doors and receive real-time notifications of entry and exit. The low-power features of Thread can significantly extend the battery life of the lock, while Matter supports integration with other security systems, enhancing overall security.

Applications in smart home appliances
Application Scenario
Smart Home Appliances

Adjust the temperature, functional modes, and more of each refrigerator compartment via a user-friendly visual interface. 

Vehicle instrument dashboard application
Application Scenario
Vehicle Dashboard

During the driving process, when it is impractical to manipulate a mobile device, the automotive dashboard application facilitates convenient music streaming and hands-free voice call management.

Multiple audio scenarios supported
Application Scenario
Audio Scenarios

Supports a variety of audio scenarios including mobile music playback, phone calls, local music playback, and music playback through connected headphones.

Bluetooth data-transfer application for electricity meter
Application Scenario
Electricity Meter

The phone connects to the electric meter via Bluetooth and reads the electricity consumption.

Auracast™ broadcast audio application for tourist attractions
Application Scenario
Smart Tourism Systems

By integrating Auracast™ technology into smart tourism systems, the tour guide can use a portable transmitter to transmit high-definition explanation audio to tourists' Auracast™ Receiver devices in real time. This technology also supports deployment at specific locations, and tourists can choose to listen to the corresponding introduction content when they approach a specific scenic spot. The multi-channel broadcast function can transmit multi-language audio streams simultaneously, meeting the real-time personalized guide needs of tourists in different languages.

In-Vehicle navigation system (RTL87x3x platform)
Application Scenario
In-Vehicle Navigation System (RTL87x3x platform)

Navigation map images are transmitted via WiFi link (e.g. 360×240 pixels @15FPS).

Real time monitoring during exercise
Application Scenario
Running Monitoring

Monitor step frequency, speed, heart rate, and other information during exercise to provide real-time feedback on exercise and health status.

Auracast™ broadcast audio application in a fitness room
Application Scenario
Group Fitness Classes

In a group fitness scenario, instructors can use the Auracast™ Transmitter to synchronize and transmit upbeat music and real-time vocal instructions to students' Bluetooth headphones (Auracast™ Receivers). This technology creates an immersive training experience, achieves precise synchronization of action commands, and avoids the echo and delay issues of traditional sound systems.

In-Vehicle navigation system (RTL87x3x with WiFi platform)
Application Scenario
In-Vehicle Navigation System (RTL87x3x with WiFi platform)

 Navigation map images are transmitted via WiFi link (e.g. 800×480 pixels @10FPS).   

Water heater, bathroom heater bluetooth passthrough application
Application Scenario
Water Heater, Bathroom Heater

Water heaters and bathroom heaters connect wirelessly to smartphones via Bluetooth, allowing convenient control of device temperatures.

The application of smart central controller
Application Scenario
Smart Central Controller

The  smart central controller operates smart home devices such as lights, curtains, and air conditioners through protocols like Mesh and Matter.

Multilingual broadcast audio application
Application Scenario
Multilingual Broadcast Audio

In the gym, Bluetooth Auracast™ enables multi-language audio broadcasting. Users can select and listen to the content in their preferred language via headphones.

Seamless control of home ambiance through smart lighting system
Application Scenario
Whole-Home Smart Lighting Management

Based on Matter over Thread technology, smart bulbs and lighting fixtures can quickly respond to user commands. Users can adjust the brightness and color of the lights through a mobile app or voice assistant and set personalized scenes for different rooms, such as reading mode or cinema mode. The Thread network provides stable, low-latency communication and is capable of self-healing during network fluctuations to ensure continuous device connectivity.

Enabling seamless interconnection for smart homes
Application Scenario
Smart Home

The Bluetooth Mesh network enables efficient device interaction in smart homes, enhancing the user experience. Through the Bluetooth Mesh network, users can operate devices and manage lighting, security systems, and environmental control devices in real-time using a smartphone or voice-controlled gateway.

Advantages of Solution

Application Advantages
Comprehensive Support for Auracast™ Transmitter, Receiver, and Assistant Roles

Supports all three operational modes-Auracast™ Transmitter, Receiver, and Assistant-enabling customers to flexibly design a wide range of product forms and implement complete Auracast™ application solutions.

Application Advantages
Excellent Performance

The Mesh protocol stack, validated through real-world projects and refined with targeted optimizations, delivers exceptional communication efficiency, reliability, and stability. It supports simultaneous ADV broadcasting and GATT connections, meeting the high-efficiency communication demands of large-scale applications.

Application Advantages
Comprehensive Display Interface

Supports Mainstream Display Interfaces on the Market.

Application Advantages
Rich main control resource

The MCU is ARM Cortex processor, with optional main frequency of 40MHz ~ 90MHz and optional SRAM 104KByte ~ 192Kbyte. Supports hardware AES/ECC, very suitable for algorithm-intensive application scenarios. Supports Bluetooth 5.0, ultra-low power consumption.

Application Advantages
Powerful Graphics Processing Capability

A 2.5D hardware graphics engine that supports rendering, scaling, rotating, deforming, and other processing of graphics.

Application Advantages
Low-Power Design for Extended Battery Life

Realtek's chip series delivers outstanding low-power performance, enabling smart locks to operate reliably over extended periods while maintaining stable functionality.

Application Advantages
High-speed USB/2.4G 8K Communication

High-speed USB and 2.4G interfaces providing 8K polling rate.

Application Advantages
Powerful Graphics Processing Capability

Featuring a high-performance GPU acceleration engine, it supports hardware-accelerated 2.5D graphics rendering, integrated alpha blending and anti-aliasing algorithms, vector font acceleration, and delivers exceptional pixel fill rate efficiency-significantly enhancing the visual experience of embedded GUI systems.

Application Advantages
Support Multiple Bluetooth Data-Transfer Solutions

Support multiple Data-Transfer solutions, including Bluetooth Low Energy SoC and Bluetooth Dual Mode Turnkey/SoC options, to meet various application needs and provide flexible solutions.

Application Advantages
Comprehensive Peripheral Support

Equipped with an extensive range of audio input/output interfaces, including MIC, USB, Line-in, SPDIF, SDIO, SPI, and I2S.

Application Advantages
Robust MCU Resources

Sufficient MCU and DSP resources enable fast response to multi-tasks and efficient processing of audio algorithms.

Application Advantages
Rich Screen Drive Interface

Support multiple screen-pulling interfaces: SPI/QSPI/8080/RGB565/RGB888…

Application Advantages
Rich Peripheral Interfaces

Highly integrated with various peripheral interfaces such as SPI, QDecoder, I2C, PWM, GPIO, and display interfaces.

Application Advantages
Stable Bluetooth Connection with Fast Response

Realtek's Bluetooth technology ensures a stable connection between the lock and paired devices, delivering rapid response at short range, enhancing both user experience and security.

Application Advantages
Comprehensive Interface Protocols

Support a UART interface with baud rates up to 2Mbps, including the UART H4 protocol and hardware flow control. 
Embedded a comprehensive Bluetooth protocol stack supporting GATT, SPP, and iAP protocols.

Application Advantages
Powerful CPU Resources

CPU computing power and MCU memory provide sensor algorithms or external device control capabilities.

Application Advantages
Low cost

Use one BLE SoC to actualize a single-chip solution, BLE connection and other functions. High degree of integration, extremely reduce the cost of the solution.

Application Advantages
Proven Stability

The solution has been integrated with multiple IoT smart ecosystem platforms, achieved mass production shipments, and is mature and stable.

Application Advantages
Abundant Peripheral Interfaces

Highly integrates various peripheral interfaces such as SPI, I2C, GPIO, CAN, PWM, and Keyscan interface.

Application Advantages
Rich Peripheral Interface Support

Offers a variety of audio input interfaces including USB, Line-in, SPDIF, and microphone, along with general-purpose digital interfaces such as GPIO, I2C, UART, and SPI, facilitating system expansion and feature integration.

Application Advantages
Full-Stack Development Support

Offers a comprehensive solution covering gateway, device, and mobile app platforms. With proven expertise across all three terminal domains, it accelerates the rapid deployment of diverse projects. 

Application Advantages
After extensive validation, it is mature and stable

The Find My SDK has fully implemented the dual protocols of Apple Find My and Google Find My, which is stable and reliable. Customers only need to do secondary development of application layer functions.

Application Advantages
Powerful DSP Processing Capability

DSP computing power provides powerful speech and audio processing capabilities.

Application Advantages
Excellent RF Performance

With exceptional reception sensitivity and TX power, it achieves industry-leading Bluetooth throughput and transmission distance.

Application Advantages
Comprehensive Support for Entry-Level to High-End Products

Whether for entry-level or high-end smart locks, Realtek's chip series provides seamless compatibility, meeting diverse user demands.

Application Advantages
Ultra-low Power Consumption Performance

While delivering high performance, it also exhibits excellent power consumption characteristics.

Application Advantages
Flexible and Optional Solutions

Support multiple communication protocols such as Classic BluetoothBluetooth Low Energy (BLE), Thread, Matter and 2.4G.

Application Advantages
Chip Functionality Highlights

Supports 2.5D display effect and hardware-level lossless image data compression; supports dual-helmet two-way local voice communication.

Application Advantages
Integrated Multi-Mode Bluetooth

Supports both Classic Bluetooth and Low Energy Bluetooth, including Classic Audio and LE Audio modes, utilizing the latest technologies to meet product requirements.

Application Advantages
Powerful Display Capabilities

RTL87x3 provides excellent screen support, compatible with mainstream interfaces like I8080 and QSPI, allowing developers to easily connect and drive various displays. The bundled Honey GUI development framework further simplifies UI development, supporting multiple display modes and components to help build intuitive and dynamic graphical user interfaces.

Application Advantages
Diverse Application Scenarios

Accommodates various architectures such as audio transmitters, audio receivers, dual-chip audio transceivers, and single-chip audio transceivers, significantly expanding its range of applications.

Application Advantages
Mature Development Kits & Documentation

Realtek offers well-developed SDKs and detailed technical documentation, helping customers streamline functional development, testing, and mass production, reducing time to market.

Application Advantages
Complete Development Kit

Comprehensive SDK development package and online documentation, along with flexible UI development options including Honey GUI, RVD, and LVGL, help customers accelerate project implementation.

Application Advantages
Single-chip Integrated Tri-mode Communication

BLE/2.4G/high-speed USB interfaces highly integrated on a single chip, providing product applications across various platforms.

Application Advantages
Comprehensive Resource Package

A comprehensive SDK development package, accompanied with mobile app project, streamlines customer project development process and accelerates project implementation.

Application Advantages
Rich Peripheral Interface

Supports interfaces such as GPIO/I2C/SPI/UART/ADC/DAC/MIC/I2S/SPIC/DC, and can be externally connected to a wide range of devices.

Application Advantages
Completed development kits

Full-featured SDK/HDK/Tools development kits, with supporting mobile phone APP engineering, which greatly reduces customer's development workload and accelerates the implementation of project.

Application Advantages
SoC Solution

A fully functional Mesh SDK development kit that supports the development of Provisioner and Device in Mesh networks, and provides rich product prototype projects to help developers easily build and expand various device products.

Application Advantages
Battery Charging Management

Built-in lithium battery charging management module supports constant current charging mode with a maximum charge current of up to 300mA.

Application Advantages
Complete Development Toolkit

The Comprehensive SDK packages are provided, including sample code for Auracast™ Transmitter, Receiver, and Assistant roles, as well as mobile app SDKs and OTA upgrade tools—significantly lowering the development barrier and accelerating time to market.

Application Advantages
Integrating Multi Mode Bluetooth

Includes Bluetooth LE Bluetooth Legacy Audio、LE Audio, Implement product requirements with the latest technology.

Application Advantages
Good Compatibility

Certified by Allion Labs and widely validated in the market.

Application Advantages
End-to-End Premium Support

From solution selection to certification services, Realtek ensures fast and high-quality support at every stage, empowering customers to succeed.

Application Advantages
Complete Product Family

Versatile IC packaging can be flexibly used in a variety of different applications.

Application Advantages
Completed Development Kits

Fully-featured SDK, including a variety of product prototype projects and mobile App SDK, OTA Tool, significantly reduces the design time and accelerates project mass production.

Application Advantages
Mobile End Solution

A comprehensive mobile SDK (supporting iOS/Android) with full-featured device management and control capabilities, featuring an intuitive user interface and scalable architecture to help developers quickly create stable and high-efficiency mobile applications.

Application Advantages
Complete Development Kit

A fully functional SDK development package that includes complete product prototype engineering, mobile APP SDK, OTA tools, and production tools, Provides an RVD graphical interface design tool, reducing customer development work and accelerating project implementation.

Application Advantages
Complete Product Family

A wide range of IC packages can be flexibly used in various applications.

Application Advantages
Complete Development Kit

Provide HDK and a fully functional SDK development package that includes complete product prototype engineering, mobile APP SDK, OTA tools, and production tools, reducing customer development work and accelerating project implementation.

Application Advantages
Complete Development Kit

A fully functional SDK development package that includes a complete product prototype project, development and testing tools, upgrade tools, production tools, etc., which reduces customer development work and accelerates project implementation.

Start Implementing My Bluetooth Auracast™ Broadcast Audio Total Solution Application

1
Define application requirements

Clarify functional and performance specifications of the software product through comprehensive analysis of target user demographics and market positioning, establishing clear guidelines for subsequent development.

2
Choose a chip
3
Define Smart Door Lock Functional Requirements

Feature Definition: Identify core functionalities such as Bluetooth unlocking, PIN code access, remote control, security alarms, etc.
User Needs: Consider user habits and security requirements to determine the lock's UI and operation methods.

4
Chip Selection
5
Define data-transfer project requirements

Clearly identify the functional requirements and performance metrics for the Data-Transfer project, such as data volume and data rate, number of Bluetooth links, and power consumption requirements.

6
Define the application requirements

Clarify functional and performance specifications of the dual mode Bluetooth controller through comprehensive analysis of target user demographics and market positioning, establishing clear guidelines for subsequent development.

7
Determine product role and chip selection

a)Select appropriate Bluetooth Mesh roles based on product functions (e.g., lighting, sensors, gateway).
b)Complete hardware selection using the reference selection table.

8
Starting to implement my Find My device

Register an account

9
Starting to implement my Find My device

Apply for product plan ID

10
Obtain development kits

a)Purchase official evaluation boards from online stores.
b)Download SDK toolkits (including Mesh protocol stack, basic sample code, and configuration tools) via the developer portal.

11
Chip selection

Select suitable chip solutions based on the target user's needs, and comprehensively evaluate their computational performance, power consumption, cost-effectiveness, and supply chain stability.

12
Select the appropriate hardware platform

Chip Selection: Based on the functional requirements, determine the required Bluetooth protocols, chip power consumption, IO count. Use the selection guide to choose the appropriate chip.
Evaluation Board Purchase: Purchase the corresponding evaluation board from online stores for functionality evaluation and performance testing to ensure the hardware platform meets the design requirements.

13
Registration Application Documentation
14
Select the Right Hardware Platform

Chip Selection: Refer to the component selection guide to choose a suitable chip that ensures stable connectivity and fast response.
Evaluation Board Purchase: Buy the corresponding evaluation board from online stores for functional assessment and performance testing to verify hardware compatibility.

15
Purchase development board
16
Chip selection

Evaluate candidate ICs based on computational performance, power efficiency, cost-effectiveness, and supply chain reliability to pre-qualify key components for the Bill of Materials (BOM).

17
System architecture design

Design the software architecture with modular principles and interface protocols to ensure operational efficiency, maintainability, and scalability.

18
Registration application materials
19
Develop Custom Applications

App Development: Development based on the Common SDK for secondary development to achieve smart lock functions including remote control, user management, and log recording.
Security Integration: Implement advanced encryption and security protocols to ensure data transmission and storage safety.
SDK Download Portal: RTK8762C SDK | RTK8762D SDK | RTK8762E SDK | RTK87x2G SDK

20
Custom HMI Device Development
21
Develop customized applications

Refer to the guidance document on the data transfer solution to develop the UART command and data transfer process on the MCU controller.

If you are using Bluetooth Low Energy SoC or Bluetooth Dual Mode SoC and require software customization, you may refer to the Bluetooth Low Energy/Bluetooth SoC Data Transfer SDK and related documents.

Reference links: RTL8762CMFRTL8762EMFRTL8761ATTRTL87x3BFx.

22
System architecture design

Design the software architecture of dual mode Bluetooth controller with modular principles and interface protocols to ensure operational efficiency, maintainability, and scalability.

23
Network setup and function development

a)Network configuration: Use Provisioning role to complete device onboarding and key distribution.
b)Scenario-based development: Implement device functions based on Model specifications (e.g., dimming control with Lighting-related Models).

24
Starting to implement my Find My device

Select chips and develop product

25
Starting to implement my Find My device

Obtaining Find My Certification

26
Testing and certification

a)Functional verification: Message transmission success rate testing and multi-node stress testing.
b)Certification preparation: Refer to Bluetooth Qualification.

27
Hardware design

Collaborate with hardware engineers on circuit and PCB development, optimizing physical layout and thermal management while adhering to Design for Manufacturing (DFM) and assembly requirements.

Reference links: RTL8763E HDKRTL8773D HDK

28
System integration and testing

Integrate the main control MCU with Data-Transfer modules and other hardware components into the system.
Conduct comprehensive functional, performance, and security tests to ensure system stability and reliability.

29
Online and Offline Support for Customer Product Implementation
30
System Integration & Testing

Hardware Integration: Assemble chips, sensors, actuators, and other components into the door lock system.
Software Testing: Conduct comprehensive functional, performance, and security tests to ensure system stability and reliability.

31
Develop customized applications
32
Hardware design

Collaborate with hardware engineers on circuit and PCB development, optimizing physical layout and thermal management while adhering to Design for Manufacturing (DFM) and assembly requirements.

Reference links: RTL8763E HDKRTL8773D HDKRTL8762G HDKRTL8773E HDK

33
Software development

Implement and optimize code on the hardware platform to guarantee functional completeness and system robustness, with provisions for maintainability and OTA update capabilities.

Reference links: RTL8763E SDKRTL8773D SDKRTL8762G SDKRTL8773E SDK

34
Certification & Mass Production

Certification Preparation: Gather required documentation and test reports to apply for certifications (e.g., Bluetooth SIG, security compliance).
Mass Production Setup: Configure and test production lines to ensure quality and consistency in large-scale manufacturing.

35
Certification and mass production

Certification Preparation: Prepare relevant documents and test reports to apply for necessary product certifications, such as Bluetooth certification.
Mass Production Preparation: Complete the configuration and testing of the production line to ensure the quality and consistency in large-scale production.

36
Software development

Implement and optimize code on the hardware platform to guarantee functional completeness and system robustness, with provisions for maintainability.

Reference links: RTL8763E SDKRTL8773D SDK 

37
Mass production deployment

a)Use mass production tool for device programming.
b)Integrate OTA upgrade functionality and use OTA tools for future maintenance.

38
Testing & debugging

Conduct multi-level verification (unit/integration/system testing) to identify and resolve defects, ensuring final deliverables meet reliability benchmarks.

39
Testing & debugging

Conduct multi-level verification (unit/integration/system testing) to identify and resolve defects, ensuring final deliverables meet reliability benchmarks.

40
Prototype validation

Build engineering prototypes for scenario-based testing, collect user feedback for iterative refinement, and complete full-process validation prior to mass production.

41
Prototype validation

Build engineering prototypes for scenario-based testing, collect user feedback for iterative refinement, and complete full-process validation prior to mass production.

Contact Us
If you are interested in the above products, please contact our REALTEK sales or ask our customer support team for more information.