Antaira Technologies - Industrial Ethernet Switches
LNP-1604G-SFP Series User Manual V1.1
6
2.5 Ethernet Ports
RJ-45 Ports (Auto MDI/MDIX):
The RJ-45 ports are auto-sensing for 10/100/1000Base-Tx devices connections. Auto MDI/MDIX
means that the switch can connect to another switch or workstation without changing the straight-
through or crossover cabling. See the figures shown below for straight-through and crossover
cabling schematics.
RJ-45 Pin Assignments (Table 2.2)
Pin Number
Assignment
1
Rx+
2
Rx-
3
Tx+
6
Tx-
All ports on this industrial Ethernet switch support automatic MDI/MDI-X operations. Users can
use straight-through cables (see figure below) for all network connections to PCs, servers, and
other switches or hubs. With straight-through cable, pins 1, 2, 3, and 6, at one end of the cable,
are connected straight through to pins 1, 2, 3 and 6 at the other end of the cable. The table below
(Table 2.3) shows the 10BASE-T/100BASE-TX/1000BASE-T and MDI/MDI-X port pin outs.
Note:
The “+” and “-” signs represent the polarity of the wires that make up each wire pair.
Pin MDI-X
Signal Name
MDI Signal Name
1
Receive Data plus (RD+)
Transmit Data plus (TD+)
2
Receive Data minus (RD-)
Transmit Data minus (TD-)
3
Transmit Data plus (TD+)
Receive Data plus (RD+)
6
Transmit Data minus (TD-)
Receive Data minus (RD-)
Table 2.2
RJ45 Pin Assignments
Table 2.3
Ethernet Signal Pin Outs
