如何使用DDX耳机输出来创建线路电平信号

我对这个话题也很感兴趣。我希望连接STA311B的耳机输出，我假设它与STA309A电路非常相似。
 
 
在两个数据表中都提到了连接，但没有提供示例原理图。
 
你能分享一个示例原理图吗？



以下为原文





I'm also very interested in this topic. I wish to connect the headphone output of a STA311B, which I'm assuming would be very similar to the STA309A circuit.


In both datasheets the connection is mentioned, but in none a sample schematic is provided.

Can you share a sample schematic?

你好Loebold，
 
 对于STA309A或STA311B，侧面有8个处理通道，您可以将任何输入映射到任何处理通道或将它们混合在一起。
 然后，对于您的应用，您可以将通道1和2用作I2S输入通道，并将它们映射到3和4通道。
 之后，您可以将通道1和2的PWM输出应用于立体声D类输出，混合通道3和4输出togethr（每通道-6dB），还在通道3或4输出中添加1或2个低通滤波器，最后你可以从通道3或4获得低音扬声器输出。
 
 由于可以使用单独的通道控制，因此您只需使用通道静音来控制它们的输出电平。
 
 谢谢 ，
 YT



以下为原文





hi Loebold ,

for STA309A or STA311B , there are 8 processing channels in side , and you are able to map any input to any processing channel or mix them together .
then for your applicaiton , you can use channel 1 and 2 as  I2S input channel , and map them to 3 and 4 channel .
after that , you can apply PWM output from channel 1 and 2 for stereo class D output , and mixed channel 3 and 4 output togethr ( -6dB each channel  ) , also added 1 or 2 low pass filter in channel3 or 4 output , finally you can get woofer output from channel 3 or 4 .

since individual channel control are available , so you just need to use channel mute to control output level of them .

thanks ,
YT