Hi all,
I have design a video data path through clipper and scaler II:
CVI 1080P-> clipper -> scaler II 1080P -> CVO 1080P
the output resolution of the scaler II is set to 1920x1080.
the data path is working when the output of the clipper is Hx1080, the range of H is from 10 to 1920.
but once I change the the vertical pixel number, there is no output from the CVO.
I have read some posts here, one mentioned that I should add a frame buffer between the clipper and the scaler II. But in the design example an427 from altera, there is no buffer between the clipper and scaler II. I doubt that it is necessary to add a frame buffer.
the clocked video clock is 74.25 MHz and the avalon ST clock is 148.5 MHz
Thanks for your assistance!
Best Regards,
Daniel
