FSC-BT1058 QCC5181 Bluetooth 5.3 LE Audio Module


FSC-BT1058 is one of the Bluetooth dual-mode and LE Audio modules from Feasycom. It provides support for both Bluetooth Low Energy and a compliant system for audio and data communication. FSC-BT1058 integrates an ultra-low-power PMU and application processor with embedded flash memory, a high-performance stereo codec, Class-AB and Class-D headphone drivers, a power management subsystem, I²S, I²C, UART, PIO, LED drivers and ADC I/O in a SoC IC. Both cores utilize external flash for code execution, enabling users to distinguish products with new features promptly without hindering development. The FSC-BT1058 module comes preloaded with the user-friendly and robust Feasycom firmware as the default setting. This encapsulated firmware simplifies Bluetooth functionality access through straightforward ASCII commands sent to the module via a serial interface, akin to using a Bluetooth modem. Consequently, the FSC-BT1058 offers an optimal solution for developers seeking to seamlessly integrate Bluetooth wireless technology into their designs.


  • Qualified to Bluetooth® v5.3 specification
  • Dual 240 MHz Qualcomm® Kalimba™ audio DSPs
  • 32/80 MHz Developer Processor for applications
  • Firmware Processor for system
  • High-performance 24-bit stereo audio interface
  • Digital and analog microphone interfaces
  • Flexible LED controller and LED pins with PWM support
  • Serial interfaces: UART, Bit Serializer (I²C/SPI), USB 2.0
  • Advanced audio algorithms
  • Active Noise Cancellation: Hybrid, Feedforward, and Feedback modes, using Digital or Analog Mics, enabled using license keys available from Qualcomm®
  • Qualcomm® LE Audio, aptX™ and aptX™ HD Audio, LDAC
  • aptX™ Adaptive, enabled using license key
  • Qualcomm® cVc™ Noise Cancellation Technology, enabled using license key
  • Integrated PMU: Dual SMPS for system/digital circuits, Integrated Li-ion battery charger
  • Qualified to Bluetooth v5.3 specification including 2 Mbps Bluetooth Low Energy and Bluetooth Low Energy Isochronous Channels
  • Qualcomm® Bluetooth High Speed Link
  • Single ended antenna connection with on-chip balun and Tx/Rx switch
  • Bluetooth, Bluetooth Low Energy, and mixed topologies supported
  • Class 1 support


  • TrueWireless™ stereo earbuds
  • Wired/wireless stereo headsets/headphones
  • Bluetooth speaker


Categories Features Implementation
Wireless Specification Chip QCC5181
Bluetooth Version V5.3
Frequency 2.402 ~ 2.480 GHz
Transmit Power +15 dBm (Typ VBAT=3.7V)
Receive Sensitivity -96.5 dBm (typ.) π/4 DQPSK receiver sensitivity
-90.0 dBm (typ.) 8DPSK receiver sensitivity
-100.5 dBm (typ.) BLE 1 Ms/s receiver sensitivity
Real-time digitised RSSI available to application
Raw Data Rates (Air) 3 Mbps (Classic BT - BR/EDR)
Host Interface and Peripherals UART Interface TX, RX, CTS, RTS
General Purpose I/O
Default 115200, N, 8, 1
Baudrate supporting from 2400 to 4000000
GPIO 20 (maximum – configurable) lines
O/P drive strength (2, 4, 8, or 12 mA)
Pull-up resistor (70 KΩ) control
I²C Interface I²C Master interface with speed up to 400 kbps
SPI Interface SPI debug and programming interface with read access disable locking
ADC Interface Analog input voltage range: 0 ~ 1.854V
10-bit ADC
4 channels (configured from AIO total)
USB Interface 1 USB2.0 Full Speed (12 Mb/s)
Audio CODEC LE Audio, aptX, aptX HD, aptX Adaptive (enabled using license key), SBC and AAC audio codecs
Configurable Signal Detection to trigger events
Compander to compress or expand the dynamic range of the audio
Post Mastering to improve DAC fidelity
24‑bit I²S interface with 1 input and 3 output channels, Supports 8-slot TDM, Supports 8 kHz, 16 kHz, 32 kHz, 44.1 kHz, 48 kHz, 96 kHz, 192 kHz, 384 kHz sample rates
SPDIF interfaces :Two instances configurable as input or output, Supports 8 kHz, 16 kHz, 32 kHz, 44.1 kHz, 48 kHz, 96 kHz, 192 kHz sample rates
2 coder decoder (codec) output channels, supporting 8 kHz, 16 kHz, 32 kHz, 44.1 kHz, 48 kHz, 96 kHz, 192 kHz sample rates, 16 codec input channels supporting 8 kHz, 16 kHz, 32 kHz, 44.1 kHz, 48 kHz, 96 kHz sample rates
Digital mic: Five interfaces supporting up to ten microphones, Supports 500 kHz, 571 kHz, 666 kHz, 800 kHz, 1 MHz, 1.33 MHz, 2 MHz, and 4 MHz clock frequencies
Stereo audio ADC with line input, stereo audio DAC
Supported sample rates of 8, 16, 32, 44.1, 48, 96, 192 and 384KHz (Input)
MIC/Line_IN SNR: 99 dB
MIC/Line_IN THD+N: -94.9 dB
Audio Output SNR: 103.8 dBA typ
Audio Output THD+N: -92.5 dB typ
Audio Output Power: 1000 mV (typ) (0 dBFS 10K load)
Profiles BR/EDR SPP (Serial Port Profile) - Up to 600 Kbps
Bluetooth Low Energy GATT Client & Peripheral
Simultaneous BR/EDR and BLE support
Maximum Connections BR/EDR up to 7 active slaves
Bluetooth Low Energy 1 connection as peripheral, up to 5 connections as central
FW upgrade Via UART (TBD)
Supply Voltage Supply VDD_IO: 1.7V ~ 3.3V; VBAT_IN: 2.8V ~ 4.30V
Power Consumption (Load=10KΩ, VBAT_IN=3.3V) Play: < 5mA (0dB 1KHz sine wave signal)---*Average
Pairing: < 5mA---*Average
OFF: < 100uA---*Average
Physical Dimensions (mm) 13 × 26.9 × 2.2; Pad Pitch 1.0
Environmental Operating -40°C to +85°C
Storage -40°C to +85°C
Miscellaneous Lead Free Lead-free and RoHS compliant
Warranty One Year
Humidity 10% ~ 90% non-condensing
MSL grade: MSL 3
ESD grade: Human Body Model: Class 2 2kV (all pins)
Charged Device Model: Class III 500V (all pins)
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