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TPA3255: 放大器无输出

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Prodigy 10 points
Part Number: TPA3255
Other Parts Discussed in Thread: TPS54560, TPS3802

TPA3255使用PBTL接法，VDD、GVDD由tps54560从pvdd转换成12v供电reset信号由tps3802提供，上电后测量DVDD3.3v、AVDD7.8V、VBG1.2v但是没有任何输出，请问一下这个电路有什么问题呢 谢谢