Don't see U4 on the schematics

[Jean-Pierre FERLAY]

Hello, I don't see U4 and the Ethernet port on the schematics. Is it on a extra drawing ?

Thank you for help

Jean-Pierre F5LOL

[Marc OLANIE]

Hi Jean Pierre

 

U4 is the KSZ9031RN, Ethernet PHY IC

 

The schematic is in the « Ethernet » sub-hierarchical template when you open the Hermeslite.pro or hermeslite.kicad.pro. You can also directly open the Ethernet.pro file

 

Drop me a line if you have any other kind of trouble with the schematic and/or kicad

 

73’

Marc f6itu

 

 

 

De : 'Jean-Pierre FERLAY' via Hermes-Lite <herme...@googlegroups.com>
Envoyé : mercredi 28 janvier 2026 15:09
À : Hermes-Lite <herme...@googlegroups.com>
Objet : Don't see U4 on the schematics

 

Hello, I don't see U4 and the Ethernet port on the schematics. Is it on a extra drawing ?

Thank you for help

Jean-Pierre F5LOL

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[Jean-Pierre FERLAY]

Hello Marc, 

Thank you very much, I will try to find the right documentation. Could you contact me on my email  please ?

73 JP

[Steve Haynal]

Are you looking at the Hermes-Lite 2 schematic (not Hermes-Lite 1) on this page?

http://hermeslite.com/

73,

Steve

kf7o

[Jean-Pierre FERLAY]

Hi Steve,

No, I was looking on my papers, and I didn't print the Ethernet page ! It is ok for me now.

Have a nice sunday.

73,

Jean-Pierre

F5LOL

[Jean-Pierre FERLAY]

Hi Steve,
My board has a short circuit between 1.2V and 2.5V. It no longer works. Steve suggested removing FB28. The board works again, but I'm wondering. What is the long-term reliability impact of the short circuit, and what functions are disabled after removing FB28? Thank you for help and advice.

73,

Jean-Pierre 

F5LOL