[Arm-netbook] Arm Netbook, Saw the update,

[Richard Wilbur]

On Thu, Jul 20, 2017 at 10:20 AM, Luke Kenneth Casson Leighton
<lkcl at lkcl.net> wrote:
> On Tue, Jul 18, 2017 at 6:16 PM, Richard Wilbur <richard.wilbur at gmail.com> wrote:
>> For our differential pairs we should only need one return-current-path
>> via per signal via (and hopefully relatively adjacent to it) since we
>> are using ground planes for our reference planes.  It is basically
>> trying to provide a relatively low-impedance path for the RF
>> (radio-frequency) return current in the reference planes (since when
>> we switch signal layers between top and bottom, our reference plane
>> changes).
>
>  as best i can i've put the vias as close as possible.  here's some new images
>
>  http://hands.com/~lkcl/eoma/a20_hdmi_review/

Thanks for the new pictures.  I'll re-target my comments to address
the newest layout.

>  i've also lined the bottom edge with vias, and there are a lot along
> the top of the diff-pairs, separating other signals.

Thanks for all the dimensions.