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TLV320AIC3106EVM-PDK Preset Configuration 无声音

TLV320AIC3106EVM-PDK开发板用USB连接至PC(xp操作系统)。

打开TLV320AIC3106EVM tool后,进入如下图所示界面,在TLV320AIC3106EVM J7接插件上插耳机,将SW2拨码开关4,5管脚拨至1。在开发板上听不到电脑播放的声音。电脑上可识别到USB设备,但是音量不能调节,如下图所示。

请TI专家帮忙定位下是电脑配置有问题还是开发板设置有问题,谢谢!