模拟信号输入,tvp5150采集到的数据,有时会出现颜色闪烁。请帮忙分析下可能的原因,谢谢!
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一般是以下几种:
- pin27脚按照我说的试试
- 读取芯片寄存器 3.21.49 Status Register #1 88h Color subcarrier lock status=1 才是正常的
- 芯片输入时钟检查一下是否信号质量不好或者ppm不佳
- 测量到TVP5150AM1的输入端CVBS信号, subcarrier是否符合规范。