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DLPC4422: Panel timings and GUI settings for Vx1 use

Dominic Plache
Prodigy 100 points
Part Number: DLPC4422
Other Parts Discussed in Thread: DLP660TE

Greetings, 

We configured a Vx1 front end to use it as a video input for DLPC4422 and to display custom patterns on the DLP660TEVM.
For configuration we used your recommended panel timings, however there are a few missing values which are necessary.

More specific the following:
Panel Max and min V total (lines)
Panel Max and min H total (pixels)
Panel Max and min DCLK (MHz)
Panel On Timing 1/2/3 (ms)
Panel Off Timing 1/2/3 (ms)

Which settings need to be defined in the DLPC4422GUI to use a Vx1 front end?

  • 0
    TI__Intellectual 2245 points

    Hello Dominic,

    Thank you for using the E2E DLP forums.

    The listed parameters sound to me as the chipset specs. 
    Where the V & H lines correspond to the specific DMD used. In this case the DLP660TE datasheet lists the active column and rows as 2716 by 1528. And as shown in the given timing spreadsheet, the only pixel clock supported is 600Mhz.
    But correct me if i'm misunderstanding.

    Also can you clarify what you Panel on/off timing is referring to? Is this time for the system to produce an image on the wall? 

    Lastly, the EVM is already configured to display an external source (V-B-One front-end) on startup.

    Regards,
    Oscar

  • 0 in reply to Oscar Guevara
    Prodigy 100 points

    Hello Oscar,

    while the H and V Display Parameter refers to the active columns and rows (2712 x 1528), the H- and V- Total paramter does not. (as you can see in the spreadsheet)

    Thats why I am asking specifically for those max and min Values for H and V Total as they are requiered as an Input for the Vx1 Front end.

    You can find the required Parameters in the following Picture.

    I guess so, yes.

    Correct me if I am wrong. I only Need to plugin the Vx1 Cable, Start the EVM and it will automatically detect the Vx1 Source (if configured correctly) and use it? No further Setup needed?

    Best regards,

    Dominic

  • 0 in reply to Dominic Plache
    TI__Intellectual 2245 points

    Dominic,

    The tool you are showing is not one that we're familiar with. 
    But looking at the parameters, it seems as the front-end would use these ranges to be able to vary the timings.

    Our EVMs require consistent timing, which is why we don't have min/max values in our timing document. 
    Varying the timings will not work with our hardware.

    But yes, if you meet the V-by-One timings that we require then all you would need to do is plug the V-by-One cable and power on the board. (assuming it's already programmed).

    Regards,
    Oscar