AudioB I2S V4 Bluetooth Digital Audio Receiver Module - I2S slave

 You want to build a digital Bluetooth amplifier board. AudioB I2S Bluetooth audio receiver module is a good choice for your project. This is a Bluetooth 5.1 stereo receiver module with an I2S digital output, featuring a music resampling frequency of 48 kHz. Apt-X supported. We break out pins to 2x10 2mm space male pins. You can integrate it into your project easily. This module has a U.FL connector. You can connect an external 2.4G antenna with it by using a U.FL to SMA cable. This module has a JST port, which you can connect our RGB Matel Push Button to with a cable. Then, use the button to control the multipoint (party mode) amplifier pairing.

The module PIN7, 8, 9, 10 are I2S output pins, I2S voltage 3.3V.

• 7 - GND
• 8 - BCK  I2S synchronous data clock, It's a 2.304MHz square wave signal.
• 9 - SD  I2S synchronous data output.
• 10 - LRCK  I2S word select, 48KHz. 1 - Left channel data, 0 - Right channel data.

How to use:

Single module

1. Double click S1, module into pairing mode. (Voice: Pairing, blue LED flash 2 times per cycle.)
2. Now, your smartphone will be able to find a new Bluetooth device whose name is "AudioB I2S", and connect to it. (Voice: Pairing successful, blue LED flash 1 time per cycle.)
3. You can play music now.

Party connection (multiple modules can be connected)

• transmitter module

1. Power up module, blue LED flashes 3 times per cycle.
2. Double click S1, module into pairing mode. (Voice: Pairing, blue LED flash 2 times per cycle.)
3. Now, your smartphone will be able to find a new Bluetooth device whose name is "AudioB I2S", and connect it. (Voice: Pairing successful, blue LED flash 1 time per cycle.)
4. You can play music now. If you only use one module, you don't need to do the following steps.
5. Single click S1, the module will switch between transmitter mode and receiver module. Stop clicking when you hear the voice: broadcast mode, it means the module is set to transmitter mode, the Red LED is ON.

• receiver module

1. Power up another module, blue LED flashes 3 times per cycle.
2. Single click S1, the module will switch between transmitter mode and receiver module. Stop clicking when you hear the voice: broadcast audio enabled, it means the module is set to receiver mode. Green LED is ON
3. Press and hold the S1 button about 1 second on the transmitter module, press and hold the S1 button about 1 second on the receiver module; the transmitter module will auto-search (30 seconds) the receiver module. Both the transmitter and receiver modules will be connected. (Voice: pairing successful)
4. The receiver module will have music out now.
5. If a new module wants to join as a receiver, repeat steps 1 to 3 on the new module.
6. If a receiver wants to quit, click the S1 button on that module to set it into transmitter mode.

If you connected the RGB Matel Push Button with a cable to the module, it works the same as the S1 button on the module.

Features:

• Bluetooth 5.1
• I2S digital output
• Sampling Rate: 48KHz
• Bit per Sample: 16 bit
• Left Justified
• Justified Data 1 bit delay
• Apt-X supported
• Low power consumption: 5mA@5V
• HFP V1.6
• HSP V1.2
• A2DP V1.2
• AVRCP v1.4
• Support for smartphone application(APPs)