The NRK3302 voice recognition module uses a 32 -bit high -performance, low -cost voice recognition IC launched by Guangzhou Jiuxin Electronics. It has the advantages of high accuracy recognition and far -field noise reduction. It is widely used in smart home appliances, smart bathrooms, smart lighting, smart mechanical and electrical, smart home, smart toys and other fields.

2. Product characteristics:

★ High -performance 32 -bit RISC core, 240MHz main frequency, supporting hardware floating -point operations

★ Built-in 1MB SPI-FLASH;

★ Support Bluetooth V5.1 + BR + EDR + BLE specification;

★ Meet Class1 Class2 and Class3 Bluetooth transmission power consumption requirements;

★ Support GFSK and & Pi;/ 4 DQPSK all Bluetooth packaging types;

★ Built -in CAP Sense Key Bluetooth controller;

★ Provide+ 6DBM Bluetooth transmission power;

★ Bluetooth receiver with -90DBM sensitivity

★ Quick AGC can enhance the dynamic range Bluetooth

★ Use the latest neural network (TDNN) algorithm, reliable recognition of 5 meters far field;

★ Special voice noise reduction algorithm, filtering out the steady state noise, and also have a good inhibitory effect on dynamic noise

★ Support MP3/WAV/WMA/APE/FLAC/AAC/MP4/M4A/AIF/AIFC decoding;

★ Filter the stable state noise and also have a good inhibitory effect on dynamic noise

★ Work temperature: -40 ℃ to +85 ℃

★ Four multi -function 16 -bit timer, supports capture and PWM mode

★ A full -speed USB 2.0 OTG controller

★ A I2S digital audio interface, supports host and slave mode

★ Three full dual -work basic UART, UART0 and UART1 support DMA mode

4. Function introduction

             4.1, UART serial function introduction

NRK3302 voice recognition module built -in standard UART asynchronous serial interface, the communication data format is: starting bit: 2 digits; FA; data bits: 2 digits; 00h ~ ffh; verification digit: 2 digits, the verification digit and the data bit addition For FFH. Use the computer serial port to determine the assistant, you need to set the parameters of the serial port correctly, and set the figure:

4.2. Play control introduction

             Introduction to the entry: The entry refers to the entry of the standard version of the identification instructions we want to say & ldquo; Xiaoming & rdquo; as a wake -up word, we can identify other entries after waking up. For details, please refer to the table below:

        You can set the entry:

                         Wake up the answer instruction to answer the effect

Xiaoming, Xiaoming, I turned on the LED lamp that had been turned on and turned on the light.

                          Turn off the lights and turn off all LED lights

                          Bright brightening (the brightest) brightness from 10%-40%-100%

                          Darkness has been darkened (the darkest) brightness from 100%-40%-10%

                          The white light has been switched to the white light and white light LED bright (the previous state brightness)

                          Change orange light to switch to orange light orange light LED bright (previous state brightness)

                          Change neutral light to switch to neutral light white light orange light LED bright (previous state brightness)

                          Sleep mode has been switched to the color temperature of the previous state of the sleep mode, 10%bright, and all LED lights are turned off after                            5 minutes of time

                          The maximum brightness has been the brightest brightness 100%

                          The minimum brightness is already the darker brightness 10%

Note: 1. This version can be directly connected to PA10 without serial version chip PA10, PA11 directly connects the lights; you can also use the serial version PA6, PA7 to directly output serial signal 2. Standard version entry for testing. If you want to modify the entry, please contact the business, please contact the business Personnel 3. UART port can be used with a single -chip microcomputer. 4. The delay time is 10 seconds after the wake -up. After receiving the instructions, re -count the time.

Guangzhou Nine Chip Electronic Technology Co., Ltd. was founded in Tianhe District, Guangzhou. The company is headquartered in Tianhe District, Guangzhou. Our company is a company's development, voice product solution design, voice product production, and voice -up software development.Smart home, smart home appliances, Internet of Things services, high -tech companies that integrate soft hardware strength.