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DM8148 Trimmer function

Shiro Ninomiya
Prodigy 140 points

Looking at the TMS320DM814x DaVinci Digital Media Processors Technical Reference Manual(SPRUGZ8A), I see the next section

12.8.2.1 Trimmer
The trimmer can be programmed to re-define a new source image within the input video frame sent from
an upstream module before it is sent to the scaling sub-modules. This feature enables small area zoom
out, source pan/scan, or removal of unwanted area in the video.


But I can't find any information to use this function.

Are there any documents which describe how to use the trimmer?

registers map, APIs, sample programs, etc, I'll appreciate any sort of information to use it.

Shiro Ninomiya

  • 0
    TI__Guru**** 170625 points

    Shiro,

    DM814x public TRM, chapter 12 HDVPSS provides only brief overview of the HDVPSS subsystem and its modules (i.e. SC Trimmer). For full description of the HDVPSS, we have a separate HDVPSS TRM addendum, which requires NDA and is available only through your local TI representative / FAE.

    Below are public e2e threads which discuss trimmer, might be in help:

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/p/292267/1019197.aspx#1019197

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/p/266994/950013.aspx#950013

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/307073/1074451.aspx#1074451

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/p/251330/885567.aspx#885567

    Regards,
    Pavel

  • 0 in reply to Pavel Botev
    Prodigy 140 points

    Thanks Pavel,

    We'll talk with our local TI rep.

    Shiro