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clocked video input , output

Honored Contributor II


In my design I try to simulate input video on fpga 


in the begin I connect test pattern to the output video and it work good 

then I generate test pattern and out with embbeded sync and connect it (out from qsys) 

to video input with embbede sync inside the qsys and output the signal to DVI monitor 


test pattern - > video out -> video input -> video out 

this link work good 


right now I try to connect the middle video out to video input but I change them to separate wire and the video don't work 


someone have an idea? 

here is the connection outside the qsys between input and output signals 


alt_vip_itc_4_clocked_video_vid_clk => clk_148_5mhz, 

alt_vip_itc_4_clocked_video_vid_data => ycbcr, 

-- alt_vip_itc_4_clocked_video_underflow => alt_vip_itc_4_clocked_video_underflow, 

alt_vip_itc_4_clocked_video_vid_datavalid => alt_vip_itc_4_clocked_video_vid_datavalid, 

alt_vip_itc_4_clocked_video_vid_v_sync => alt_vip_itc_4_clocked_video_vid_v_sync, 

alt_vip_itc_4_clocked_video_vid_h_sync => alt_vip_itc_4_clocked_video_vid_h_sync, 

-- alt_vip_itc_4_clocked_video_vid_f => alt_vip_itc_4_clocked_video_vid_f, 


alt_vip_cti_0_clocked_video_vid_clk => clk_148_5mhz, 

alt_vip_cti_0_clocked_video_vid_data => ycbcr, 

-- alt_vip_cti_0_clocked_video_overflow => alt_vip_itc_4_clocked_video_underflow, 

alt_vip_cti_0_clocked_video_vid_datavalid => alt_vip_itc_4_clocked_video_vid_datavalid, 

alt_vip_cti_0_clocked_video_vid_locked => alt_vip_cti_0_clocked_video_vid_locked, 

alt_vip_cti_0_clocked_video_vid_v_sync => alt_vip_itc_4_clocked_video_vid_v_sync, 

alt_vip_cti_0_clocked_video_vid_h_sync => alt_vip_itc_4_clocked_video_vid_h_sync, 

alt_vip_cti_0_clocked_video_vid_f => '0'
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Honored Contributor II

inv the clock