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

[mike.valk at gmail.com]

2017-12-05 13:41 GMT+01:00 Luke Kenneth Casson Leighton <lkcl at lkcl.net>:
> On Tue, Dec 5, 2017 at 12:30 AM, Richard Wilbur
> <richard.wilbur at gmail.com> wrote:
>
>> 3.  Reflections are more troublesome the further you get from the
>> signal source.  Close to the source the reflection arrives at the
>>  source during the signal rise time and can be overcome by the line driver.
>
>> Deviations from path in due NorthEast direction (+ signifies change in the
>> NorthWest direction, - signifies change in the SouthEast direction, units in mil)
>> <step>  <Northern keepout> <TX1> <TX0> <TXC> <Southern keepout>
>> 0     0  0  0  0  0
>> 1     -1  1  2  3  4
>> 2     -1  1  2  3  4
>> 3     -1  1  2  3  4
>> 4     -2  2  4  6  8
>> 5     -2  2  4  6  8
>> 6     -1  1  2  3  4
>> 7     -1  1  2  3  4
>> 8     -1  1  2  3  4
>
>   okaay so the idea is, just after the long straight you make a series
> of very tiny corrections by bringing each of the tracks inwards -
> closer together - so that when you get to the point where you *have*
> to be 5-7mil apart you're already neeearrrrly that far apart *anyway*
> so it's not so bad.
>
>  ok :)  that's perfectly doable.

Just a small question. Why not deviate from the 45 degree angle? So
you end up with converging lines, instead of the stepped approach?

>
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