WC3445 DESCRIPTION OF PARTS
6
2. 6 LAN ports
The four LAN ports are supported by an array of four RJ45 female connectors mounted on
the rear panel of the WC3445.
These ports automatically sense the LAN interface and switch between MDI and MDI-X
configurations. This removes the potential requirement for Crossover cables when
connecting LANs to the WC3445 whatever LAN equipment is being used. The ports also
automatically sense the LAN speed and operate at either 10 Mbps or 100 Mbps, and sense
whether operation should be in full or half duplex mode.
There is a miniature LED on the lower right corner of each RJ45 socket on the rear panel
which is illuminated yellow when operation is at 100 Mbps. The miniature LED on the lower
left corner of each RJ45 socket is illuminated green when the link is active.
The RJ45 connector layout for an auto-sensing MDI/MDI-X port is shown below:
Figure 2.6 LAN port connector layout
The pin numbering for the connector is shown below:
Figure 2.7 RJ45 connector layout
Pin No
MDI Signal
MDI-X Signal
1
Tx Data +ve
Rx Data +ve
2
Tx Data -ve
Rx Data -ve
3
Rx Data +ve
Tx Data +ve
4
Not connected
Not connected
5
Not connected
Not connected
6
Rx Data -ve
Tx Data -ve
7
Not connected
Not connected
8
Not connected
Not connected
8 7 6 5 4 3 2 1
LOCKING TAB
