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is DLP LVDS same as any other LVDS?

Mike Sh.
Expert 1405 points
Other Parts Discussed in Thread: DLPC900, DLPC410

Asking to know what video frontend chips are compatible with DLP

  • 0
    TI__Guru 54705 points

    Hello Mike,

    The answer to your question depends on what do you mean by, "same as any other LVDS"?

    The compatibility with video front ends depends very much on which DLP chipset(s) you are contemplating using.  If you have not gotten that far, then a better question will be what are you attempting to accomplish?

    As an example, the DLPLCR6500EVM and DLPLCR9000EVM both have an a IT6535 Display Port/HDMI reciever that connects to the DLPC900 controller.  Other controllers are designed for very fast but low level control and do not have a defined interface to video receivers.  Examples are the DLPC410 & DLP910 controllers.

    I hope this is helpful.  We hope to hear more from you on this.

    FIzix

  • 0 in reply to Fizix
    Expert 1405 points

    I mean when looking for a "video frontend chip" in the market they are advertised as for example, accepting DisplayPort or HDMI version x and outputting 1 or 2 channel LVDS. There's no mention in the product sheets what version (if there is any) of LVDS is outputted and no specific mention of DLP support.

    For my specific case I'm trying to find a video frontend chip that can do 1080p HDMI or DisplayPort at 240Hz to be used with the DLP470TP.

  • 0 in reply to Mike Sh.
    TI__Guru 54705 points
    Mike,

    Thank you for the reply. We are routing this to the team that can best help with the specific chipset you are interested in.
  • 0 in reply to Fizix
    Expert 1405 points
    Thank you.
  • 0 in reply to Mike Sh.
    TI__Mastermind 23070 points
    Hi Mike,
    The DLP470TP chip-set solution requires a DMD, two DLPC6421 controllers and an FPGA. Please refer to the figure 12 (page 33) of datasheet
    www.ti.com/.../dlp470tp.pdf

    The front end application processor will communicate with the FPGA . The only supported interface by FPGA is Vx1. You need to look for a front end application processor which outputs 1080 @240 Hz to Vx1 interface.

    I understand that delay in DLPC6421 datasheet may created this confusion. I am sorry for inconvenience.

    Hope this answer your question.

    regards,
    Vivek
  • 0 in reply to Vivek Thakur
    Expert 1405 points
    >The only supported interface by FPGA is Vx1.

    You mean the specific FPGA in the reference design?
    Because I'll probably not need that FPGA for my limited usage.
  • 0 in reply to Mike Sh.
    TI__Mastermind 23070 points
    Hi Mike,
    The support infrastructure for DLP470TP /DLPC6421 and associated firmware/reference design is center around our Optical engine manufactures. The customer are expected to work with our optical engine manufacturers to develop their products for this device.

    www.ti.com/.../optical-module.html


    Please accept my request to connect so that I can explore best way to support your requirement.

    regards,
    Vivek
  • 0 in reply to Vivek Thakur
    Expert 1405 points

    Vivek, your optical engine manufacturers are only interested and specialized in pico projectors, not VR headsets. Understandable, as there is a single VR headset using DLP as of now, however that doesn't change the fact.

    That is why I am working with my own optical engineers who have prior experience with OLED screen based VR.

  • 0 in reply to Mike Sh.
    TI__Mastermind 23070 points

    I understand your perspective. Please feel free  to contact us if you have any optics related questions. We will try our best to answer them.

    regards,
    Vivek

  • 0 in reply to Vivek Thakur
    Expert 1405 points
    Thank you, Vivek. I hope our product is successful and DLP becomes more popular for VR headsets. It certainly has some advantages to subpixel OLED/LCD, although also has some optical challenges yet to be solved.
  • 0 in reply to Mike Sh.
    TI__Mastermind 30875 points
    Thank you Mike.
    If you have any specific about optical challenges, please don't hesitate to put it here. We will consult our optics team and get back to you.
    Regards,
    Sanjeev