◆ Product Description

 SPK-D Bluetooth speaker card module is a high-performance Bluetooth stereo audio modules.Includes a Bluetooth communication IC (CW6633M) for receiving a wireless audio signal transmitted from the audio transmission source terminal, e.g.: mobile phones, Bluetooth adapter; also includes an audio decoder IC (APM030), the output of the 16-bit DAC, can straight promote headset or push Amplifier. Bluetooth speaker card module based on CLASS 2 power level, in line with Bluetooth 2.1 + EDR specification, compatible with Bluetooth version 3.0, up to 3 Mbit / s transmission speed.

 SPK-D Bluetooth the card speaker module is easy to apply, superior sound quality, high sensitivity, small size, transmission distance.

 In addition, the Bluetooth card speaker module also has a MP3 decoder and card reader function, TF card or SD card can be read in direct external deck.The key module ADC_KEY structure, the number and function of the order of the buttons can be defined. PIN is simple, basic function the PIN property of the total to the side, a simple program can be soldered directly to the side of the PIN feet, convenient application.

◆ Product Features:

 1. Meets Bluetooth 2.1 + EDR specifications, compatible with Bluetooth version 3.0 application;

 2. Support L2CAP/A2DP(AVCTP/AVDTP/AVCRP profiles) to receive stereo audio signals can control the volu me of the audio transmitter end and down song operation by agreement;

 3. SPI flash memory firmware, configuration parameters according to the demand, and the flexibility to modify the application upon request;

 4. With analog output and to push PCM data through the SPI interface, two-way transmission of audio data;

 5. Buttons with the ADC sampling input, the number of self-configuration capabilities and button;

 6. To the five GPIO can be used to drive the LED indicates the working status of the Bluetooth module for external amplifier MUTE;

 7. The .16 bit DAC output high-quality audio, and can directly drive 40mW @ 32? headphones;

 8. The .10 Bit ADC mono MIC input (MIC function at this stage is still being tested, you can update the software using the test is completed)

 9. Wide operating voltage range (3.4V ~ 5V) lithium battery-powered;

 10. Sniff mode to support low-power mode, the power saving mode (power saving mode support audio transmitter end of the wake and the external keys wake enter power-saving mode by default 15min);

 11. Support UART interface communication;

 12. Support MP3 decoding; support TF card, SD, mini SD card with card reader function;

◆ Typical applications:

 1. Bluetooth speakers

 2. Bluetooth MP3 Boombox

 3. Bluetooth speakers

 4. Household Bluetooth audio

 5. High-quality stereo

 6. Bluetooth audio communication equipment

 7. Bluetooth cigarette lighter