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DS90UH940-Q1: "Active-low" in the INV_VS description

Part Number: DS90UH940-Q1

Hi, Team,

In the datasheet p74, it is stated for CSICFG1 addr6Bh bit1  INV_VS that "When set, the VS received from the digital receiver will be inverted. Because the CSI logic works on active-high VS, this bit is typically set when the VS from the data source is active-low".

Which waveform would be the "active-low" mentioned in the above sentence?

 

The above shows the VSYNC signal.

We think it is No.2, but want to double-check your team's opinion.

Thanks,

Masaru