TAS5760M-Q1: The PBTL model employs questions

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?

Lydia：

您好，

已经收到了您的案例，调查需要些时间，感谢您的耐心等待。

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GUILONG LIU：

请尽快帮忙看下是什么问题引起的或者有什么调查方向也可以。

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GUILONG LIU：

这种接法对的吗？是不是应该是A+和B+要接到一起。

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Links：

Hi

I think it shows A+ and A- combined together. And for PBTL using, you should do this.

A+ and B+ should not. A and B connect to two sides of the speaker, which would be differential output to provide audio.