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最近在网上买的安福莱dac8563模块无输出，按照历程编写的程序，DIN，SCLK，SYNC均为3.3V的控制信号，LDAC和CLR均接地。AVDD恒定5.08V，发送的时序用示波器看了是正确的24位码，但就是无输出
