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tlvac3100 输出有噪音



你好,

     我是在dm6446上面移植了3100的驱动,以前是用的3104,移植后可以用alsa的aplay播放音乐,但是伴随着很大的噪音,类似于收音机没信号时的那种噪声,我把dac进行mute或则关掉speaker,音乐和噪音都没有了,是不是得在寄存器里配置低通滤波器来解决或则什么其他的原因