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我司应用tlv320aic3101音频芯片遇到的问题

Other Parts Discussed in Thread: TLV320AIC3101

方案设计通过tlv320aic3101的line2L、line2R接收来自FM 的模拟音频信号,通过寄存器设置通过HPLOUT、HPROUT输出,但是音频输出质量很差,请问可能是什么原因?目前确认FM 音频输出没有问题,tlv320aic3101播放系统数字音频也没有问题。望尽快回复,谢谢。