N930X is a MP3 chip that provides serial ports, which perfectly integrates MP3 and WMV hard decoding chips. It includes four functional models of MP3 chips, namely N9300, N9301, N9302, and N9303 MP3 chips, support TF card drivers, support computers to directly update SPI Flash content, and support FAT16 and FAT32 file systems. Through simple UART serial instructions or one -line serial instructions, you can complete the specified music and how to play music. There is no need for tedious underlying operations, beautiful sound quality, convenient use, stable and reliable is the biggest feature of this product. In addition, this chip is also a deep -customized product. It is specially developed for the development of the field of custom speech playback. It can choose the corresponding model according to different functions. It is a streamlined version of the MP3 chip with a very high cost performance. 9300 can be seamlessly replaced with 9100 chips. For details, please consult customer service online.

★ Support sampling rate (kHz): 8/11.025/12/16/22.05/24/32/44.1/48;

★ 24 -bit DAC output, DSP hard decoding inside, non -PWM output, dynamic range support 90dB, signal -to -noise ratio support 85DB

★ Support FAT16, FAT32 file system, the maximum TF card supports 32G, and 32G U disk

★ A variety of control mode: UART serial port mode, first -line serial port mode, AD key control mode.

★ Broadcast language plug -in function, you can suspend the background music that is being played, support song playback under the specified path, support cross -disk insertion, support insertion early knots

★ Specify the disk formation play, specify the song playback

★ level 30 sound can be adjusted

★ Specifying path playback (support Chinese and English) function and folder switching function, the specified time period playback function;

★ Support the three -dimensional sound output playback, MP3 format, you can directly push the 0.25W headphone speaker;

★ Support computer sound card control, support USB Mass Storage

★ SOP16 packaging form, simple peripheral;

★ The wide input power range is 3.7V-5V input, and the built-in door dog reset circuit;

★ Support the development of customized special functions, please contact our company;

★ Support infrared remote control input and external audio input function;

★ There is a busy signal output function

Adkey button control

The module we use is the method of AD keys, replacing the traditional matrix keyboard connection method. The advantage of this is to make full use of the more and more powerful AD function of the MCU. The design is simple and not simple. The module is configured with 1 AD port and the resistance value of 10 keys. If you use it in the occasion of strong electromagnetic interference or strong sensitivity and capacity load, please refer to our & ldquo; Note & rdquo;.

(Note: N9300 and N9301 support the front line serial port and UART serial function, and do not support ADKEY functions. N9302 and N9303 support ADKEY function, and do not support the front line serial and UART serial ports.)

AdKey button control reference diagram

MCU front -line serial control

The N930X series MP3 chip supports the single -chip microcomputer simulation of the first -line serial control. This control method is simple and convenient and suitable for any single -chip microcomputer.

The first -line serial protocols in this document are divided into N930X and N930XA. The front line of the N930X protocol is added with sleep instructions. The N930XA is exactly the same as the previous N910X first -line serial protocol.

The first -line serial port sequential chart