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TVP5150AM1: 能否支持720x576帧率为50的视频信号解码

Guoyang Ma
Prodigy 40 points
Part Number: TVP5150AM1
Other Parts Discussed in Thread: TVP5150

一般PAL视频帧率是25hz，项目中视频输入为分辨率720x576，帧率为50hz，请问TVP5150AM1能否支持50hz帧率解码？麻烦给一下解释。

  • 0
    TI__Guru**** 295050 points

    您好，能够支持的分辨率大小要看像素时钟最大能支持多大频率。我们可以计算下，以15%的blanking time计算：

    Pixel clock=720*576*50*(1+15%)=23.85Mhz。

    而TVP5150的像素时钟为13.5Mhz，所以不支持50Hz的帧率。