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DS90UB925Q-Q1 PCLK波形品质确认

Other Parts Discussed in Thread: DS90UB925Q-Q1, DS90UB928Q-Q1

DS90UB925Q-Q1和DS90UB928Q-Q1配对使用中,925作用外部CLK,波形如下,这样的PCLK波形是OK的吗?在使用中发现用示波器探头碰下PCLK的过孔,视频会闪烁。925的DATASHEET里并没有对PCLK的波形做详细的要求,需要方波吗?