a HDMI chip question

Any technical questions about the Epiphany chip and Parallella HW Platform.

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a HDMI chip question

Postby theover » Wed Jul 16, 2014 11:07 pm

I looked at the ADV7511 datasheet, and saw it should be able to generate 12 bit color.

I would like to experiment with my full screen capabilities, so generating a 2560x1440 WXGA with 12 bit per color component (36 bits/pixel) would be uber cool.

Does anyone (Andreas ?) know without having to look much up if this is possible as a special mode with the Parallella board, or is this not possible because of chosen bus-widths and AIX bandwidths ?

Don't get me wrong having this chip well coupled with the Zynq is worth more than $100, it's just something that occurred to me.

Theo V.
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Re: a HDMI chip question

Postby FHuettig » Thu Jul 17, 2014 3:37 am

Hi Theo, the ADV7513 can deal with 12bit samples, but that requires 24 bits connected between the FPGA and the ADV and we only have 16. At least that's what I get from the tables in section 4.3.2 of the programmer's guide.

Because this is single-link HDMI we're limited in any case to 165MPix/sec., so 2560x1440 (QHD? I thought WXGA was 1280x800 or some such) would limit you to something like 30fps.
-- Fred -- Hardware Guy --
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