According to my search results, Niu Ge 4399 chip is a chip for audio decoding, supporting a variety of audio formats including AAC, MP3, WMA, OGG, etc.
The instruction manual for 4399 chip audio decoder probably includes the following:
1. Product introduction: Introduces the basic information of 4399 chip sound decoder, including application scenarios, main features, etc.
2. Instructions for use: Detail the use of 4399 chip audio decoder, including how to set, how to connect, how to control and so on.
3. Technical specifications: List the technical specifications of the 4399 chip audio decoder, including audio format, resolution, processing power and so on.
4. Troubleshooting: This section describes the possible faults of 4399 chip sound decoder in the process of use and the handling methods.
5. Precautions: This section describes the precautions for using the 4399 chip sound decoder, such as moisture, ESD, and operating environment.
Precautions are very important for the protection of the device and the effect of use. Read the instructions for use and maintenance carefully, and follow the related operations and precautions.