[En-Nut-Discussion] Ethernut 5.0 Schematic Preview

[Alain M.]

Hi Harald,

> The intention is not to protect Ethernut from the outside world, but to 
> protect the outside world from Ethernut. When doing the first EMI tests 
> with Ethernut 2, we experienced radiation on the serial cable. Adding RC 
> filters helped. Using ferrite beads might be better, but RC is much 
> cheaper and easier to get.

I would not trust coils for this...

> Using different caps for Rx/Tx is indeed a good idea.

:)

> Zywyn offers ESD protected level shifters only.

?? their site is really bad.. I could not find the manual. Anyway it is 
probably compatible with ST.