The current product is using the BTL mode. The I2S signal transmits the data of the left and right channels. Currently, the function is normal. Now I want to change to the PBTL mode. By using an oscilloscope for measurement, I found that the waveforms of A+, B+, A-, and B- are the same. I am using the software configuration mode. I have also confirmed that GAIN0 and GAIN1 have been raised. The IIC write operation has also been successful. However, due to the identical output waveforms, the speaker does not produce sound. Could you please tell me what else needs to be set if we use the PBTL mode?
这种接法对的吗？是不是应该是A+和B+要接到一起。