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Query on video out (display) port in DM648 EVM

Zuber
Prodigy 65 points
Other Parts Discussed in Thread: THS8200

Hi all,

I am using vesa color bar sample program given in PSP drivers of DVSDK of DM648.

I am able to display the VESA color bar pattern on video port 1.

Now i wanted to test this with all the other video ports, basically i want to test all video ports that they are working fine.

But from some where on internet i found that video encoder chip (THS8200) is connected with only port 1, so when ever i use port other than 1 in vesa color bar test program it fails.

I just wanted to know that is it tttrue that i can not use video port other than 1 for this test.

if any body had done this previosly please help me to solve this.

any other information willl also help me.

 

Regards,

Zuber Saiyed

  • 0
    Prodigy 50 points

    Hi Zuber

     

    The DM648 EVM has its own VPORT Driver for Video out ,but it don’t support the RGB888 output

    Hardware:

    The RGB888 Output should use two vport (0,1,2),you can use the vport 0 &&1  or Vport 1&&2.

    The pixel clock should be support via outside synchronized.

     

    Software:

    Refer to the vport spec for two vport sync output

    Modify its source code

  • 0 in reply to jiser
    Prodigy 65 points

    thanks jiser for your reply.

    but i found from lyrtech documents that only video port 1 is connected to output port, so how can i use two video ports as you suggested for the RGB888 display.

    do you have any other document which i have to look at before starting the development.

  • 0 in reply to Zuber
    Prodigy 50 points

    Yes!

    The DM648 EVM has only vport-1 for video output!

    This is the hardware's limit!

    So you just need to Layout another board for use vport-1 && 2 to output!