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关于D类功放TAS5631BPHD的问题

Other Parts Discussed in Thread: TAS5631, TAS5631B

我在用TAS5631做音频功放,但芯片总是显示没准备好(即READY引脚总是为低电平),其他的故障引脚都是高电平,即显示无故障,我的PVDD电压已经在25V以上,我想知道如何做才能使芯片处于准备状态呢