Interfacing UDOO with an iPad 3 LCD (DisplayPort)

Discussion in 'UDOO 101' started by rw3iss, Dec 27, 2013.

  1. rw3iss

    rw3iss New Member

    Dec 26, 2013
    Likes Received:

    I am looking for a little bit of guidance for creating an interface from the UDOO to an iPad 3 LCD.

    The iPad screen pinout is just: power, displayport, and LED strings.
    Here is the pinout: ... Pinout.png

    The UDOO LVDS pinout is here (page 11): ... matics.pdf

    I think I read that the UDOO has a maximum resolution when using LVDS, so I'm wondering if it is possible to get more of a resolution by running the LCD through the HDMI output of the UDOO (can anyone confirm this?). I don't even know if it is possible, though, as the LCD screen wants DisplayPort data.

    I am wondering if anyone has any experience or documentation on creating a converter for LVDS (or HDMI) to a DisplayPort interface. I can figure out how to build a board that will power the display and LEDs, but I'm just looking for some guidance on the aforementioned.

  2. Ascanio

    Ascanio New Member

    Jan 3, 2014
    Likes Received:
    Hi fella,

    yep, that iPad3 display is really nice (and cheap... at 50-something on eBay it's a bargain compared to the really lame 10" 1280x800 displays out there!).

    Unfortunately I don't think there is anyway you can drive it through the Udoo's LVDS ports (even should you combine both the iMX6's ports, one of which hasn't been exposed).

    Reverting to the HDMI port (which is essentially a DVI port for the video part), you can use an active converter. An active converter in fact is an extremely powerful chip that deciphers the DVI video data and remodels it into DisplayPort format. The two formats are like apples and pears: incompatible.

    Now to drive the native resolution of the iPad3's display, you need a dual-channel DVI source (each channel can run up to 1920x1200, from what I understand). I don't know if the Udoo board's HDMI port has such capability.
    In any case, here is an example of an active converter DVI->DisplayPort for 2560x1440 resolution:

    Hope this helps!

Share This Page