Bluetooth 2.1/3.0/4.0 Controller, UART Interface

General Description

The Realtek RTL8761ATV-CG is a highly integrated single-chip Bluetooth 2.1/3.0/4.0 controller with a UART interface. It combines a BT Protocol Stack (LM, LL, and LE), BT Baseband, modem, and BT RF in a single chip.

The RTL8761ATV Bluetooth controller is compatible with Bluetooth core specification v4.0, and supports dual mode (BR/EDR + AMP + Low Energy Controllers). It is compatible with previous versions, including v2.1 + EDR and v3.0 + HS. For BR/EDR, it supports scatternet topology and allows active links in slave mode and master mode. For Low Energy, it supports multiple states and allows active links in master mode. The links in BR/EDR and LE can be active simultaneously.


  • 32-pin QFN
  • Bluetooth single chip
Host Interface
  • Compatible with HS-UART with configurable baud rate for Bluetooth
Bluetooth Controller
  • Compatible with Bluetooth v2.1 and v3.0 Systems
  • Supports Bluetooth 4.0 Low Energy(BLE)
  • HS-UART interface for Bluetooth data transmission interoperable with H4 and H5 specification
  • PCM interface for audio data transmission via Bluetooth controller
  • Integrated MCU to execute Bluetooth protocol stack
  • Supports all packet types in basic rate and enhanced data rate
  • Supports SCO/eSCO link
  • Supports Secure Simple Pairing
  • Supports Low Power Mode (Sniff/Sniff Sub-rating/Hold/Park)
  • Enhanced BT/Wi-Fi Coexistence Control to improve transmission quality in different profiles
  • Bluetooth 4.0 Dual Mode support: Simultaneous LE and BR/EDR
  • Supports multiple Low Energy states
Bluetooth Transceiver
  • Fast AGC control to improve receiving dynamic range
  • Supports AFH to dynamically detect channel quality to improve transmission quality
  • Integrated internal Class 1, Class 2, and Class 3 PA
  • Bluetooth 3.0+HS compatible
  • Supports Power Control/Enhanced Power Control
  • Bluetooth Low Energy Support
  • Integrated 32K oscillator for power management
Peripheral Interfaces
  • Configurable LED pin