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ADV7441A video output

Question asked by ankit.thakkar on Sep 27, 2011
Latest reply on Sep 30, 2011 by DaveD

Hi guys,

 

We are using ADV7441A as HDMI receiver and capturing different video resolutions.

We faced problem related to digitla video output of ADV7441A.

 

Case :- 1 Capturing video resolution of NTSC

Observation :- At output of ADV7441A, data is stable on falling edge of clock cycle.

The duty cycle is not 50%. (it is around 23%)

Figure 1 attached.

 

Case :- 2 Capturing 1080p60 video resolution

Observation :- At output of ADV7441A, data is stable on rising edge of clock cycle.

The duty cycle is 50%.

Figure 2 attached.

 

In both the cases the clock polarity resistor is 0x01.

 

Anyone has any idea about this kind of behaviour?

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