FSC-BT1046 Qualcomm QCC3056 Bluetooth 5.2 Audio SoC Module for TWS Earbuds, Dongle and Speakers


The Feasycom FSC-BT1046 is a Bluetooth audio module that supports Bluetooth Low Energy, Bluetooth Classic, and dual-mode Bluetooth, suitable for both audio and data communication. It integrates an ultra-low-power DSP, application processor, stereo codec, power management subsystem, LED drivers, and ADC I/O. The module comes with user-friendly Feasycom firmware, allowing easy access to Bluetooth functionality through simple ASCII commands. It's an ideal solution for developers looking to integrate Bluetooth wireless technology into their designs.


  • Qualified to Bluetooth® v5.2 specification
  • 120MHz Qualcomm® Kalimba™ audio DSP
  • 32/80MHz developer processor for applications
  • High-performance 24-bit audio interface
  • Active Noise Cancellation: Hybrid, Feedforward, and Feedback modes, using Digital or Analog Mics, enabled using license keys available from Qualcomm®
  • Analog Audio: Differential Class AB/D Outputs
  • Supports aptX™ and aptX™ HD Audio
  • Supports UART, Bit Serializer (I2C/SPI), and USB 2.0 serial interfaces
  • Integrated Li-ion battery charger (Max. 200 mA)
  • Low power modes to extend battery life
  • Single ended antenna connection with on-chip balun and Tx/Rx switch
  • Class 1 support


  • TrueWireless™ Stereo Earbuds
  • USB to Bluetooth Dongle
  • Bluetooth Speaker
  • HD Audio Transmitter/Receiver


Bluetooth Module FSC-BT1046
Chipset Qualcomm QCC3056
Standard Dual-mode Bluetooth 5.2
Frequency Band 2.402 GHz ~ 2.480 GHz)
Transmit Output Power +10 dBm (Basic Rate, VBAT = 3.7V)
Receive Sensitivity -96 dBm (Basic Rate, VBAT = 3.7V)
Power Consumption Play/Pairing < 5mA (Average), OFF < 100uA (Average)
Size (mm) 12.4 × 12.4 × 1.8
Operating Temperature -40°C to +85°C
Storage Temperature -40°C to +85°C
VBAT_IN 2.8V ~ 4.3V
VDD_IO 1.7V ~ 3.3V
Miscellaneous Lead Free and RoHS compliant, one year warranty
Humidity 10% ~ 90% non-condensing
MSL Grade MSL 3
ESD Grade Human body model (Class 2, 2KV), charge device model (Class 3, 500V)

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