Read Panasonic KX-NT321RU (serv.man2) Service Manual online
7
KX-NT321RU
4.2.3.
Reset Circuit
Reset Signal is output from IC4 and input into IC1 and IC2.
4.2.4.
Ethernet Circuit
The Ethernet hub IC (IC6, IC7) is used for the Ethernet interface.
It is connected from IC6 to the Ethernet port (JK2) through a transformer and so is isolated.
Also, LAN port (JK2) gets power from the Ethernet line for PoE (Power over Ethernet) as shown below.
It is connected between IC7 and the VoIP (IC1) by high-speed bus called MII (Media Independent Interface) bus operating with
25MHz.
It is connected from IC6 to the Ethernet port (JK2) through a transformer and so is isolated.
Also, LAN port (JK2) gets power from the Ethernet line for PoE (Power over Ethernet) as shown below.
It is connected between IC7 and the VoIP (IC1) by high-speed bus called MII (Media Independent Interface) bus operating with
25MHz.
Click on the first or last page to see other KX-NT321RU (serv.man2) service manuals if exist.