No output data of CVI IP core.

Hi guys,

First off, I just started using FPGAs about a month ago, and am only just beginning to use Nios II and IP Cores, so suffice to say I am very new to this.

I'm working with CVI IP core to convert the input video from PAL Camera to Avalon-ST video stream,followed by a Deinterlacing IPcore.However,though CVI successfully detected the input clocked video,there is no output.

but when I replace the CVI with Test Pattern Generator IP Core,the datapath works successfully,which has confused me for a long time.

If you've successfully used this in the past, please have a quick read and see if you can help me out.

Thanks a lot!