Color Classification
A default firmware: I2S output (no ldac)
B default firmware: SPDIF output (no ldac)
Factory direct sales, large quantity and excellent price, batch can be customized BTM875-W Bluetooth module with shielding cover, BTM875-W and BTM875-B Bluetooth module have the same pin position
● Module model: SJR-BTM875-W
● Bluetooth chip: CSR8675, built-in 16M FLASH
● Bluetooth version: 5.0
● Module size: 15mm x 22mm x 2.5mm
● Power supply voltage: 3.0-4.3v
Data link (Bluetooth module specification, reference schematic diagram):
http://www.tianjiarun.com/search.php?q=BTM875-W
Default firmware:
1. Support sbc, aac, aptx, aptx-LL, aptx-HD decoding, no call function, all support analog output by default, optional I2S, SPDIF output,
2. Button description:
● MFB: power on at high level, power off at low level, and automatically enter pairing mode after power on
● PIO0: Short press to play and pause, long press for 3 seconds to enter pairing, long press for 5 seconds to clear the pairing record
● PIO1: Short press the volume to decrease
● PIO2: Short press the volume to increase
● PIO3: Short press the previous song
● PIO4: short press a song
● PIO6: power amplifier control enable pin (when there is audio output, output high level 1.8V)
3. Indicator light description:
● Bluetooth is not connected: LED0 and LED1 flash alternately
● Bluetooth is connected: LED1 is always on
● Bluetooth audio playback: LED1 is always on