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Power amplifier board size: 2.9x2.9CM
With call function, CSR8645 low power consumption V4.1, power on, the default volume is maximum
5V: drive dual 4 ohms 3W
6.5V: drive dual 4 ohm 5W
VCC, GND: power supply pin
LN(-), LP(+): left speaker
RN(-), RP(+): right speaker
COM: Button public terminal, the other end of the button is connected to VOL+, VOL-, PREV, NEXT, PLY
M+, M-: Microphone (with positive and negative poles)
