Bluetooth pass-through is a wireless data transmission method primarily used to enable wireless data transfer between two devices that originally lack wireless communication capabilities. Its basic concept involves using a Bluetooth communication link to transmit data from one device to another reliably, without the need for complex packaging and verification. Realtek offers two convenient Bluetooth pass-through solutions: Low Energy Bluetooth pass-through and Dual-mode Bluetooth pass-through. The dual-mode Bluetooth pass-through solution combines the advantages of both classic Bluetooth and Low Energy Bluetooth. This solution supports both traditional Bluetooth devices and Low Energy Bluetooth devices, providing users with broader compatibility and higher data transfer rates. It is particularly suitable for devices that require high data transfer demands or need compatibility with multiple Bluetooth standards. Realtek's solutions support a rich set of commands and interfaces, allowing users to fully control Bluetooth functionality through simple commands during their application design. They can also freely choose physical communication interfaces such as UART, SPI, I2C, USB, etc. By using application commands to configure basic parameters of the Bluetooth chip, users can quickly achieve wireless data transmission. Realtek's Bluetooth pass-through solutions offer great flexibility to developers, easily adapting to various application scenarios.
System Structure
The main control MCU in the product extends physical communication interfaces such as UART, SPI, I2C, and USB to connect with the Realtek solution, enabling Bluetooth data passthrough functionality.
Application Scenario
Advantages of Solution
Support dual-mode (BR/EDR/BLE) pass-through and BLE pass-through solution. GATT, SPP and iAP profiles inside for dual-mode,GATT profile inside for BLE mode.
Baud rate up to 4Mbps,Default baud rate 115200bps,UART I/F (H4 supported),Hardware flow control supported.
Full-featured dashboard SDK, supporting mobile phone APP engineering, reduces customer's development workload, accelerates the implementation of project.
RTL8761ATT | RTL8753BFJ | RTL8762CMF | RTL8762EMF | |
---|---|---|---|---|
Standard | BR/EDR+BLE 4.2 Dual Mode | BR/EDR+BLE 5.1 Dual Mode | BLE5.0 | BLE5.2 |
Profile | GATT and SPP | GATT, SPP and iAP | BLE | BLE |
Package (mm) | QFN32, 4 x 4 | QFN40, 6 × 4 | QFN40, 5 x 5 | QFN40, 5 x 5 |
Series | RTL8761ATT > | RTL8753B | RTL8762C > | RTL8762E > |