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

[Luke Kenneth Casson Leighton]

http://rhombus-tech.net/allwinner_a10/news/

ok so after the successful DC3 test this is the last final check
before sending the gerbers off to the factory for pre-production
prototyping.  in the end i used a "keepout" area on both layers 1 and
3, drawn by hand, to ensure that no GND flooding gets near the HDMI
traces on layers 1 and 6.  l'm including layer 3 as an example of how
the group of HDMI vias that come just out of the A20 punch a large
hole: GND-flooded layers 2 and 5 as well as 4 (power plane) will also
look like that.

richard if you want to zoom in on those pictures you should be able to
click on them in a browser, then expand them: they're actually around
2,500 pixels wide, i just asked them to be displayed in that HTML page
as only 1024 otherwise they wouldn't fit :)

you can see i removed the GND traces in between, and generally kept
everything except VIAs away from them.  it's not perfect but thanks to
your help i'm pretty happy with it.  if there's nothing major i want
to send this off.

l.