BTM835-B CSR8635 Stereo Bluetooth 4.0/4.1 Audio Module


Price: $5.45
Bonus: 5
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BTM835-B CSR8635 Stereo Bluetooth 4.0/4.1 Audio Module

Description:
 
BTM835-B Bluetooth audio module, using CSR8635 chip, support A2DP, AVRCP, HFP, AAC, etc., using 
4M SPI FLASH memory chip.
The module pin is intensive, need for better welder basis.
CSR Bluetooth module audio is differential output, need to increase the OPAMP or AMP circuit to converted into a single-ended output (left channel, right channel, audio common).
Board size: 18 x 15mm

Software Description:
 
Bluetooth Name: BT Speaker
Key instructions as follows:
PIN30 (MFB): high-level boot, low-level shutdown (module power up, PIN30 need be low-level, when power-up need a delay circuit , can not pull up, boot automatically into pairing mode)
PIN1 (PIO6): power amplifier control enable pin (with audio output, output high level 1.8V)
PIN2 (PIO8): Press to play / pause / answer / hang up, hold for 1 second to reject the incoming call
PIN3 (PIO1): short press to choose previous, long press the volume down
PIN4 (PIO0): Short press to choose next song, long press the volume plus
 
Special Features:
 
PIN2: Hold for 3 seconds to force into pairing mode, hold for 6 seconds to clear the pairing list
PIN2 + PIN3: Hold for 1 second to enter searching TWS mode (only CSRA64110 / CSRA64210 / CSRA64215 Bluetooth series)
PIN2 + PIN4: Hold for 1 second to enter the searched TWS mode (only CSRA64110 / CSRA64210 / CSRA64215 Bluetooth series)
PIN3 + PIN4: Hold for 1 second to disconnect TWS (only CSRA64110 / CSRA64210 / CSRA64215 Bluetooth series)
 

Package included:
 
1 x 
BTM835-B CSR8635 Stereo Bluetooth 4.0/4.1 Audio Module














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