Hsync and Vsync synchronizations

Question

Hi, 
 With continuation of previous question modifications. 
 we have added D flip-flops for 1 cycle delay purpose so that, the RGB and Hsync and Vsync signals will synchronize. as shown in the figure. 
 
 so the questions is, can the proper synchronization will happen if we use D flip-flop for Hsync and Vsync signals. 
 second thing, the DRDY signal is use for data enable only so is it right to connect it to BLANK signal. 
 
 Regards, 
 Sanjay

DharaniS · Accepted Answer

Hi, 
 
 If you invert the Data Enable (DE) signal using a digital inverter, it means that the DE signal will transition between high and low states oppositely to its original state. Inverting the DE signal can have various purposes in display systems. Make sure to verify the timing and polarity requirements of your display system to ensure proper operation after inverting the DE signal.

The ADV7125 only outputs what is on the input. It does not change any of the timing. 
 Please check the clock, sync and blank signals with a scope to make sure they match the requirements of the display. Tweak the timing parameters as needed in your code or source. Then check a color bar source to make sure the colors are going through correctly.

Thanks, 
 Dharani S)

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Hsync and Vsync synchronizations

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