If you need to add Bluetooth audio functionality to your products, Realtek’s BumbleBee series is definitely your best choice. It offers a range of benefits that makes it a popular choice for listening to music and other audio content. The convenience, mobility, compatibility, range, audio quality, and multi-connect support make it a versatile and practical solution for many users. In a short, it offers high-quality audio, reliable wireless connectivity and low power consumption.
In addition, BumbleBee series supports bluetooth legacy, bluetooth low energy (BLE) providing flexibility in high-speed data transfer for streaming audio and low-power data transfer for small amounts of data. It also equip with the LE audio protocols suitable for audio broadcasting and multilingual audio application in public venue.
The Bumblebee series consists of a series of platforms ranging from cost-effectiveness to high-performance, with different package sizes, GPIO counts, SDK tools, audio codec features, noise cancellation algorithms, power management, amplifiers, etc. to meet your various needs.
BT Audio Selection Table
|Application Scenario||Audio transmitter/audio receiver|
|BT version||BT 5.3|
|BLE audio||RTL8763EFL and RTL8763EAU only|
|package||QFN-50 4*6mm ( RTL8763ESE and RTL8763EAU) QFN-40 4*6mm (RTL8763EFL)|
|Security engine||Secure Boot(RSA-2048) , SHA256 signature AES128/256|
|RAM size||532KB shared RAM|
|MCU core@max clk rate||Real-M300 (CM55 like)@100MHz|
|DSP core||Tensilica HiFi mini compatible|
|embedded Flash size||4MB|
|Available GPIO number||9 or 12|
|I/O ADC (max)||4CH 12bits|
|USB||High speed ( RTL8763ESE and RTL8763EAU only )|
|I2S||2 Formats : Left-Justified, PCM mode-A, PCM mode-B Application sampling rate : 48KHz Master and slave mode No master clock (MCLK) output|
|Aux in||L and R 2 channels|
|UART||3 Debug log, HCI UART or data UART|
|I2C||3 master/Slave mode Max data rate is 400Kbps|
|SPI||3 One master/slave dual mode, two master mode only|