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DLP3030-Q1: What is the relationship between the WVGA (864 × 480) resolution supported by DLP3030 and the actual number of micromirrors 683*608

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Prodigy 140 points

Part Number: DLP3030-Q1

In the DLP3030 specification，it Supports WVGA (864 × 480) resolution ；
The physical number of micromirrors is 683*608=415264 micromirrors;
What is the relationship between the WVGA (864 × 480) resolution supported by DLP3030 and the actual number of micromirrors 683*608？

What is the difference between WVGA (864 × 480) and   683*608? 

Thanks very much.

  • 0
    TI__Expert 3545 points

    Hello -

    Details about the configuration of the micromirrors can be found in the DLP3030-Q1 datasheet. In "Figure 6. Micromirror Array Physical Characteristics" you can see the orientation of the micromirrors, where they are each rotated by 45 degrees relative to a standard orthogonal pixel display -- we call this rotation a "diamond" configuration which is also referred to as "quincunx" in the literature. This rotation of the 684 x 608 micromirrors results in a 16:9 aspect ratio. 

    The incoming pixel data of WVGA (864 x 480) is also 16:9 aspect ratio. The video processor blocks of the DLPC120 include a scalar which translates the orthogonal input (864 x 480) to the diamond pixel space.

    So there is not a 1:1 mapping of video input pixels to micromirror outputs. The scalar and additional video processing ensures a realistic replication of the input video on the DMD.

    Regards,

    Ross