FSC-BT1055 Qualcomm QCC5151 Bluetooth 5.2 Audio Module


The FSC-BT1055 (QCC5151) is a premium ultra-low power Bluetooth dual-mode single chip solution with programmable DSP, optimised for true wireless earbuds and on-ear devices.

Integrated features include Qualcomm Adaptive Active Noise Cancellation (ANC), voice assistant support (including always-on wake-up word activation), Qualcomm aptX adaptive audio and Qualcomm TrueWireless mirroring technology.

Supports communication with the FeasyBlue app and many other Bluetooth apps

Basic Parameter

Bluetooth Module Model FSC-BT1055
Bluetooth version Bluetooth 5.2 Low Energy (BLE)
Chipset QCC5151
Dimension 13mm x 26.9mm x 2.2mm; Pad Pitch 1mm
Data Rates 3 Mbps (Classic BT - BR/EDR)
Transmit power +13 dBm (maximum)
Power supply 2.8V ~ 4.3V
Frequency 2.402 - 2.480 GHz
Work Temperature -40°C to +85°C
Storage Temperature -40°C to +85°C
Highlights Extremely low-power performance
Qualcomm TrueWireless Mirroring
Support for multiple voice ecosystems
Wide range of differentiating audio features

Main Features

  • Extremely low-power performance
  • Qualified to Bluetooth v5.2 specification
  • 120 MHz Qualcomm Kalimba audio DSP
  • High-performance 24-bit stereo audio interface
  • Qualcomm Adaptive active noise cancellation
  • Digital interfaces: I2S/PCM, SPDIF
  • Serial interfaces: UART, Bit Serializer (12C/SPI), USB2.0
  • apt-X, apt-X HD Audio, aptx-Adaptive, AAC, SBC audio codecs support
  • Support superior end-to-end optimized
  • Dual-mode Bluetooth and premium audio tech for wireless earbuds
  • Powerful quad-core processor architecture – supporting complex use cases
  • Designed to support wake-word and/or button activated digital assistants including Amazon Alexa Voice Service and Google Assistant


  • Audio Transmitter/Receiver
  • Bluetooth speakers
  • Bluetooth USB dongle
  • Feature-rich true wireless earbuds

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