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Altera_Forum
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11 years ago

Triple SDI RX - Clocked Video Input Interface

Hello, I am trying to convert the output of Triple SDI RX to the Avalon Video stream using Clocked Video Input. However, I am not able to obtain any signals at the output of Clocked Video Input. The output of SDI RX is HD-SDI and it seems OK when observing with Signal Tap(1080p60). At this point, I am not sure about the connection between SDI RX and Clocked Video Input. I am using Clocked Video Input with Embedded Sync with SDI 1080p60 arrangement. I connected Clocked_Video_Intput_vid_data(19:0) to SDI_rx_data(19:0) and Clocked_Video_Input_vid_clk to SDI_rx_clk. What about Video_Clocked_Input_vid_datavalid and Video_Clocked_Input_vid_locked signals? Do I have to connect connect them data_valid signal of SDI RX? Thank you,

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    11 years ago

    Were you able to fix your issue? I have the same problem. How did you make your connections between the SDI Rx core and VIP clocked video input block?

  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    I partly solved the problem by making the connections below (using embedded sync):

    rx_clk --> vid_clk

    rx_data(19:0) --> vid_data

    rx_data_valid_out(0) --> vid_datavalid

    rx_data_valid_out(0) --> vid_locked

    I obtained video correctly, however, at this time I have an overflow issue for Video Clocked Input for every about 2 minutes. I analyzed downstream functions, but did not found anything that causes overflow.
  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    For vid_locked input, try connecting to trs_locked signal from the SDI Rx core instead of the datavalid signal.