[Arm-netbook] HDMI High-Frequency Layout: Recommendations

Luke Kenneth Casson Leighton lkcl at lkcl.net
Thu Sep 28 10:36:18 BST 2017


http://rhombus-tech.net/allwinner_a10/news/eoma68-a20-hdmi-275-new-keepout-taper2.jpg

ok that's the latest, a few tweaks still needed.  yes saw about the
15mm not 15mil... whoops :)  so all those little tweaks... gone.
maybe shouldn't have removed the ones on the USB-OTG line but... oh
well.

 anyway... moved the tracks up by 4 mil so they're now 15 mil from
board-edge GND and 15 mil from the top line.  sorted out the wiggles
(aagain!!).

 taper... really not certain where to put it (starting point) -
thoughts appreciated.

 end... just before the 45-degree bend into the VIAs and ESD.

 a few tweaks of VIAs along the way to ensure the GND  flood-fill
isn't broken.  the image is hi-res enough so that GND VIAs (covered by
flood-fill) can just be identified by the word "GND".

l.



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