Luxus Audio BTBM40AJ - Bluetooth 4.0 card with microphone input

Data sheet

Brand Luxus Audio
Power Supply (Volt) 5
Version 4.0
APT-X No
No TWS

If you want to build a Bluetooth digital amplifier card. The AudioB I2S Bluetooth audio receiver module is a good choice for your project. This is a bluetooth 4.2 stereo recevier module, the I2S digital output and the musical resampling frequency is 48KHz. Apt-X supported. Based on CSRA64215. We have breakout pins for 2x10 2mm space pins. You can easily integrate it into your project. If you want a demo board.

Name Direction Description

1 GND -
2 LINE IN_L Analog input Line input, left
3 LINE IN_R Analog input Line input, right
4 GND -
5 AUX DET Digital Input Aux In / Enable line
6 GND -
7 GND -
8 BCK - I2S synchronous data clock
9 SD - I2S data clock output
10 LRCK - I2S selected word
11 VIN - Input voltage + 5V (+ 3.7V to + 5.5V)
12 MIC_BIAS Analog output Microphone bias output
13 NC NC NC
14 NC NC NC
15 + 1.8V - Output voltage + 1.8 V
16 GND -
17 FORWARD Digital Input 1 - Next Music / Increase Volume - Quickly press S2 to go to the previous song.
18 REWIND Digital Input 2 - Last music / Reduce volume - Quickly press S3 to go to the next song, long press to increase the volume.
19 PLAY / PAUSE Digital Input 3 - Play / Pause - Press S1 to play or pause.
20 MUTE Digital Output 4 - Mute Control - if there is an audio output, the MUTE pin will be high level, otherwise it will be low level.

Connection

  Quickly press S2 to go to the previous song, long press to reduce the volume;
     Quickly press S3 to move to the next song, long press to increase the volume;
     Press S1 to play or pause;
     if there is an audio output, the MUTE pin will be high level, otherwise it will be low level.