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DS90UB940-Q1: 投屏显示黑框

Part Number: DS90UB940-Q1

1.接口927---940---947--948 ,中控主机通过927 将MIPI CSI 传输给940 ,然后经过芯驰的X9E芯片处理后通过947传输给948 显示,目前碰到的问题是,投屏内容显示不出来,显示的是开窗大小的黑框,经测量,LOCK ,CSI 均有信号;

2. 经过分析发现:带电情况下插拔927----940 LVDS线缆,恢复正常显示,重新上下电后,仍然投屏不了,显示黑框;