我用AIC23b采集声音信号并通过headphone输出，声音信号通过音频线输入，无论是否有声音信号输入，其输出声音信号的幅值都是一样的大小，不知道原因何在，求解答。以下是寄存器设置情况;
digital audio interface format 0x43
sample rate control 0x22
power down 0x00
anolog audio path control 0x10
digital audio path control 0x06
digital interface activation 0x01
left line input volume control 0x1f
right line input volume control 0x1f
left headphone volume control 0x64
right headphone volume control 0x64 |
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