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Smith222122's avatar
Smith222122
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4 years ago

Scaler II IP Core Causing Underflow on Clocked Video Output IP

Hello there, I am having an issue with my Scaler IP core starving my Clocked Video Output (CVO) IP core and causing underflow. I think the issue stems from the scaler requiring a certain number of...
vgs's avatar
vgs
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4 years ago

Hello,

At a quick glance you may be trying to do something that isn't possible:

(1920*1080)/(1280*800) = 2

and

100/65 < 2

Assuming your scaler gets one pixel per clock cycle on the input side, the rate at the output will be one pixel every two clock cycles on average. I am not sure how the blanking would affect the numbers but the video path probably needs to be clocked faster.