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DVI TX/RX with DM365

Arunkumar PB
Prodigy 130 points
Other Parts Discussed in Thread: TFP401, TFP410

Hi,

We have a requirement of DVI input and output for our Video conferencing application.We are planning to use DM365.

Can we use TFP401 and TFP410 for this purpose what will be interface of these with DM365.Are there software drivers available for these.

TFP401 being a panel bus receiver ,can we use that in Video conferencing application as the output is specifically for some panel display.

Please suggest the interface required with DM365 for these ICs.

 

Regards,

 

Arun

  • 0
    TI__Mastermind 43875 points

    Arun,

    On the output side it is simply a case of connecting the RGB, CLK, DE and sync outputs to the TFP410 inputs. I believe that the drivers already support using the output in parallel output mode (used for LCDs etc,,,). The timings should be easily configurable for the specific HDMI/DVI modes you are needing.

    I do not know much about the input side though. Sorry.

    BR,

    Steve

  • 0 in reply to Steve Clynes
    Prodigy 130 points

    Hi Steve,

    Thanks for your reply

    On the output side for TFP410  the connectivity must be RGB 24 bit right?

    Is it possible to connect in RGB565 mode with TFP410?

     

    Where can I get information on TFP401?

     

    Regards,

     

    Arun

  • 0 in reply to Arunkumar PB
    TI__Mastermind 43875 points

    Yes, DVI only supports RGB color.

    Yes, you can connect a lower color depth source to the TFP410.

    There are a number of ways of connecting to the TFP410.

    For each color channel you should connect the upper bits of each color output should be connected to the corresponding upper bits of the TFP410 inputs. For the remaining low order bits there are three options...

    1) Connect to '0'. This yields a linear output but cannot achieve max full scale.

    2) Connect to '1'. This yields a linear output but cannot achieve min output.

    3) Repeat the upper bits on the lower bits, e.g. for red connect in this order... (msb) 43210432 (lsb). This will give full range, but the output is not 100% linear.

    My recommendation is to use option 3.

    BR,

    Steve

  • 0 in reply to Steve Clynes
    Prodigy 130 points

    Hi Steve ,

    Thank you for the reply.

    So I can sum up as 24 bit interface would be the best if interfacing with DM365.

    If going with lower color depth then option 3 as you mentioned would be optimum.

    I would like to know about the driver availability for this.

     

    Regards,

     

    Arun

  • 0 in reply to Arunkumar PB
    TI__Mastermind 43875 points

    Arun,

    All three options would use the same configuration so there are no changes needed to the drivers.

    I believe that there should already be drivers available for LCD/DVI/parallel output but I am not a software/kernel expert.

    BR,

    Steve