MP3 2 Click Board™

Product Code: MIKROE-4159

How Does The MP3 2 Click Board™ Work? The MP3 2 Click Board™ is equipped with the KT403A as a main integrated circuit, micro SD card connector, and 3.5mm Audio Jack connector. Basically, it is a complete solution for a DAP (digital audio player) on a Click board, which can be controlled over the UART communication interface, using RX and TX pins of the mikroBUS™ socket. The default baud rate is 9600bps and it is customizable. On the MP3 2 Click Board™, the KT403A serves as a brain. It is complete SOC, which integrates16-bit MCU, audio decoder, and a 24-bit DSP. It also integrates the complete SD card interface and therefore, this click board contains the connector onboard for an external micro SD card. Thanks to that, the user can insert a fair amount of memory if the long, continuous playback time is needed. The MP3 2 Click Board™ has two status indication LEDs, onboard. The first one is named "SD Card" and it serves as an indication that the SD Card is present in the slot. The other one is "Chip Correct" and it indicates that the SD Card is correct and that the communication between the KT403A and the SD Card sucseeded.

Besides the indicatora, there is one 3.5mm headphone jack onboard, so that MP3 2 Click can be connected directly to the next stage of the music playback system, ie. audio amplifier. Using the predefined command set, the MP3 2 Click Board™ can be fully controlled. One can Play/Pause a song, play a specific track, change a Volume Up and Volume Down between 0% and 100%, play the next or the previous song, repeat the current song, and more. Besides that, several sound effects are also supported, mentioned for different types of music: Normal, Jazz, Classic, Pop, and Rock. The MP3 2 Click Board™ can be supplied and interfaced with both 3.3V and 5V without the need for any external components. The onboard SMD jumper labeled as VCC SEL allows voltage selection for supply IC, but this Click Board™ communication interface and is designed to be operated only with a 3.3V logic level. SPECIFICATIONS Type MP3 Applications Digital music players, camcorders, speakers, headphones, toys, and more. On-board modules KT403A serial MP3 module, from Shenzhen Qianle Microelectronics Technology Co. Ltd. Key Features MP3 Player, Streaming support for MP3 and WAV. Interface UART Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V or 5V PINOUT DIAGRAM This table shows how the pinout on the MP3 2 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes NC 1 AN PWM 16 NC Reset RST 2 RST INT 15 NC NC 3 CS RX 14 TX UART TX NC 4 SCK TX 13 RX UART RX NC 5 MISO SCL 12 NC NC 6 MOSI SDA 11 NC Power Supply 3.3V 7 3.3V 5V 10 5V Power Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 PWR - Power LED Indicator JP1 VCC SEL Left Power Supply Voltage Selection: Left position 3V3, right position 5V LD2 CHIP CORRECT - Chip correct LED indicator LD3 SD CON - SD Card connect LED indicator