Old Navigon devices use Amaryllo chip...can be used without PS.

Not such a simple story. I tried to simplify, but you are persistent
I am member on D-E since 2012

Yess, a driver is always used for the TMC port (dll file)
In addition to the TMC port splitter, a TMC driver is also required.
So, if your device is equipped with Royaltek, Locosys, Wistron or GNS chip, try...
... good luck