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Video 101 question

Question asked by ThomasJ4452 on Feb 24, 2012
Latest reply on Feb 24, 2012 by ThomasJ4452

This question will no dobt make obvious my lack of understanding of HD video format...you patience is greatly appreciated.

Have a question regarding using the AD9380 device, actually its currently on an FPGA development board that I'm looking at.

I have a full HD HD-SDI (1920 x 1080 - 1080psf29,97 or 1080p30) input signal that will be converted to HDMI on the development

board prior to going into the AD9380. The output will be going to a native 1920x1080 LCD panel via RGB to LVDS converter on the

development board.  When I read the spec for the AD9380 it says:

     "Its 150 MSPS encode rate capability and full power analog bandwidth of 330 MHz supports all HDTV formats (up to 1080p and

      FPD resolutions up to SXGA (1280 × 1024 @ 75 Hz)."

In my application I must have full HD (1920x1080) getting to the LCD panel without scaling. What I don't understand is I thought

(maybe that's my problem ) that 1080p was, by definition, 1920x1080. This seems to conflict with the devices' SXGA (1280x1024)

spec. The only thing I can figure, until someone kindly corrects my limited understanding, is that the device can take in 1920x1080

but will only send out 1280x1024 max. However, I think it much more likely I have a misunderstanding rather than the device

having a lower resolution output than input.

Can someone please enlighten me to where I'm wrong.

Thanks

Tom

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