System

· 200MHz 32bit RISC processor Core
· Internal 188K RAM for data and program
· Internal ROM for firmware implementation
· Internal 4M bits SPI serial Flash for custom defined software
· Support 24MHz OSC with on-chip PLL
· Operating voltage: I/O 3.3V, Core 1.2V
· Fully configurable PEQ, up to 14 segments
· Support for echo cancellation and noise reduction
· Support for wind noise reduction
· Support for packet loss concealment
· Support for voice prompt

Bluetooth

· Support Bluetooth5.0，compatible with Bluetooth4.2/4.2 LE/4.0/2.1 + EDR system
· Max transmitting output power: 10dBm
· Bluetooth receiving sensitivity: -95dBm@GFSK, -95dBm@π/4 DQPSK, -86dBm@8DPSK modulation
· Compatible with AVRCP Profile V1.6
· Compatible with A2DP Profile V1.3
· Compatible with HFP Profile V1.7
· TWS two earphones can switch between master and slave at will
· Support for mSBC broadband speech coding
· 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 )
· Bluetooth Dual Mode support: Simultaneous LE and BR / EDR
· Supports multiple Low Energy states
· Fast AGC control to improve receiving dynamic range
· Supports AFH to dynamically detect channel quality to improve transmission quality
· Integrated Class2 PA
· Supports Power/Enhanced Power Control
· LE Data Packet Length Extension
· Extended Scanner Filter Policies
· LE 2M PHY
· LE Extended Advertising
· LE Periodic Advertising
· Channel Selection Algorithm #2

Audio

· Build in mono 16-bit input sigma-delta ADC, SNR>85dB, THD+N<-81dB
· ADC supports sample rate 8k/12k/11.025k/ 16k/22.05k/24k/32k/44.1k/48kHz
· Supports mono input analog microphone
· Supports two digital microphones
· Supports stereo single-ended line in
· Build in stereo 20-bit input sigma-delta DAC, SNR>97dB, THD+N<-82dB
· DAC supports sample rate 8k/12k/11.025k/ 16k/22.05k/24k/32k/44.1k/48k/96kHz
· Build in stereo 18mW PA for headphone
· Support I2S TX with master mode, sampling rate from 8KHz to 96KHz
· Support I2S RX , sampling rate from 8KHz to 48KHz

Power Management

· Supports Li-Ion battery and 5V power supply
· Supports 5V power supply plugged in reset
· Integrated linear battery charger up to 300mA charging current, which supports CC/CV mode, does not support charging battery directly
· Integrated Low precision A/D converters for battery voltage monitor, temperature monitor and wire-controller
· Energy saving with dynamic power management
· Integrated DC-DC buck converters, which can be switch to LDO mode
· Supports DC5V insertion detection
· Supports DC5V pull out detection
· Low Power Consumption:
  - A2DP TWS: 6mA(Min)@Vbat = 3.8V
  - HFP TWS: 8.3mA@Vbat=3.8V
  - Typical Sniff Current: 300μA@500ms<br< a=""> style="box-sizing: border-box;" />  - Deep sleep: <1μ</br<>A@Vbat = 3.8V

Physical Interfaces

· Support 10 GPIO
· Support 4 LRADC
· Support 5 PWM for lamp controller
· Serial Interface: SPI*2, UART*2, I2C*2

Package

· QFN-32 (4*4*0.75mm, Pitch 0.4mm)

Application

· Stereo headsets and headphones
· Ture Wireless Stereo headset
· Other Bluetooth audio applications