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

[mike.valk at gmail.com]

2017-08-10 10:18 GMT+02:00 Luke Kenneth Casson Leighton <lkcl at lkcl.net>:
> On Thu, Aug 10, 2017 at 9:01 AM, mike.valk at gmail.com
> <mike.valk at gmail.com> wrote:
>> 2017-08-09 15:23 GMT+02:00 Luke Kenneth Casson Leighton <lkcl at lkcl.net>:
>>> next set...
>>>
>> GND shielding parallel to the differentials is interrupted quite
>> often.
>
>  because there's simply not enough space to do otherwise.  if i could
> move the entire CPU and RAM up another 0.5mm it would be doable.  but
> then i would have to re-route 12 signals which go around the top area
> of the board and that's (a) risky and (b) not enough space to do it.
>

I found quite some room. See attachments. Red: Easy improvement.
Yellow questionable but could use some improvement. Excuse the crappy
image editor it's all I have at the moment.

Also wouldn't a GND infill on the signal layers be preferable? As log
not unconnected islands emerge.
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