Other Parts Discussed in Thread: TPA6211A1, PCM1754
Hi Expert,
Our customer use PCM1754-Q1 + TPA6211 in their project. The schematic is as below. When power on and unmute pcm1754-q1(mute pin is low) and they don't even initialize I2S, they can hear noise from speaker. Is that normal? What kind of reason can cause the noise? I ask them to test pin8&9 using oscilloscope but didn't find noise. Could you please help and give some hints for debugging? Thansk.
BR,
Elec Cheng