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DLP5531-Q1: DLP Input over HDMI and its specifications ?

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Replies: 1

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Part Number: DLP5531-Q1

Hi, 

Recently I saw TI's DLP Headlight Demo, where DLP Headlights can projects zebracrossing, Left Turn and many more signs on road surface while driving. And as per my understanding , DLP works as projector, whatever input we provide over HDMI, DPL will project it. 

I have few queries

1. Input video over HDMI should be 60 fps? 

2. Can we input 1 fps or 30 fps video data as well? 

3. If we can not input low fps video? How to convert it to 60 fps? 

4. Input video over HDMI should be of 1152 × 576 resolution?

5. Can we feed 1280x720 or Full HD resoltion video directly to DLP over HDMI?

6. Input should be in RGB Planar/interleaved or YUV format?

Regards,

Sagar

  • Hi Sagar,

    I'm glad you had an opportunity to review what a headlight using DLP technology is capable of. I'll answer your questions below.

    Thanks,

    Jake

    SagarK

    1. Input video over HDMI should be 60 fps? 

    Yes, this is correct. The DLPC230 supports three video modes as described in the datasheet (http://www.ti.com/lit/ds/symlink/dlpc230-q1.pdf) Section 7.2.1 - Table 4. All three video modes are at 60Hz

    SagarK

    2. Can we input 1 fps or 30 fps video data as well? 

    No, the only available mode is at 60Hz. Can you tell me what the reason would be for the lower frame rate, especially a 1Hz update rate?

    SagarK

    3. If we can not input low fps video? How to convert it to 60 fps? 

    I'm sorry but content generation is outside the scope of what we can help with. I'm sure there are many utilities available for creating content at 60Hz.

    SagarK

    4. Input video over HDMI should be of 1152 × 576 resolution?

    There are three supported resolutions: 1152 x 576, 1152 x 1152, and 576 x 288. However the default resolution of 1152 x 576 is typically easiest to work with.

    SagarK

    5. Can we feed 1280x720 or Full HD resoltion video directly to DLP over HDMI?

    No, with this evaluation module it is not possible.

    SagarK

    6. Input should be in RGB Planar/interleaved or YUV format?

    Input should be RGB. Since the headlight is monochromatic the only color channel used by the EVM is the red channel. Other data on the blue and green channels is discarded.