Bluetooth speaker chip

Peripheral and Interfaces
1. Support low power VAD application, such as  KWS and customized offline voice commands  recognition;
2. Dual-microphone feed-forward and feed-back Active Noise Cancellation (FF/FB  ANC);
3. Dual-MIC Environmental Noise Cancellation (ENC);
4. Support Low power Touch Key;
5. Support Low power enter ear detect;
6. Three multi-function 32-bit timers, support  Capture and PWM mode；
7. SPI Master/slave interface;
8. Two SD Card Host controller;
9. Two Hardware IIC support 400K;
10. Hardware Quad-decoder;
11. WatchDog;
12. Three full-duplex UART;
13. Sixteen Channels 10-bit SARADC;
14. Build in PMU, such as charger/buck/LDO; Support dual-buck low power application and  support single-buck low cost application;
15. VUSB for charger, wakeup, communication,  reset functions;
16. Support 4.35V/4.2V high voltage battery;