CSR8645 Bluetooth 4.0 Low-Power Audio Module/Support APTX High-Quality Lossless Compression Speaker AmplifierItem NO.: F-3188

CSR 8645 Bluetooth 4.0 Low-Power Audio Module

Explanation:

The main control chip CSR 8645 Bluetooth stereo audio module can communicate with Bluetooth earphones

Can connect two phones at the same time for better CSR sound quality Bluetooth 4.0, good wall penetration effect, APT-x high sound quality transmission

Introduction:

1. Keys: There are a total of 6 function keys: POWER-EN, PLAY, VOL+, VOL -, PREV, NEXT.

The introduction of button functions is as follows:

POWER-EN: When using a switch control module to turn on or off the machine, by turning the switch, when POWER-EN is connected to BAT, the module will turn on; When POWER-EN disconnects BAT, the module shuts down and is typically used for battery power. When using module power on, simply connect the POWER-EN series 10K resistor to the BAT to achieve module power on, which is usually used when external power is supplied.

PLAY: Play/pause (short press), answer/hang up the phone (long press, slightly longer time), pair again (long press)

VOL+: Volume increase

VOL -: Volume reduction

PREV: Previous Song

NEXT: Next Song

2. LED: pairing status, dual lights flashing alternately, after pairing, single light flashing;

3. USB sound card function;

4. 3.2V low power alarm, 3.0V automatic shutdown, (AMS1117 power supply achieved);

5. The charging current is set to 250MA, and when it is full, the light will turn off and another light will be on (I personally recommend using a charging module, fast);

6. Always in pairing when there is no connection;

7. Can connect two mobile phones simultaneously;

8. MUTE: The EN control pin of the audio amplifier outputs a low level after a period of silence; When playing, output a high level (1.8V).