Specifications

Hardware Reference 15
C613-03064-00 REV E
1. The “+” and “-” signs represent the polarity of the wires that make up each wire pair.
If a twisted pair cable is to join two ports and only one of the ports has an
internal crossover, the two pairs must be straight through, as listed in Table 5
on page 15.
If a twisted pair cable is used to join two ports and either both ports are
labelled with an “X” or neither port is labelled with an “X”, a crossover must be
included in the wiring. Table 6 on page 15 lists the RJ-45 crossover wiring pin
assignments.
Table 4: RJ-45 Pin assignments.
Pin Number Assignment
1
1TX+
2TX-
3RX+
6RX-
Table 5: RJ-45 Pin assignments, straight through cable.
End 1 End 2
1 (TX+) 1 (TX+)
2 (TX-) 2 (TX-)
3 (RX+) 3 (RX+)
6 (RX-) 6 (RX-)
Table 6: RJ-45 Pin assignments, crossover cable.
End 1 End 2
1 (TX+) 3 (TX+)
2 (TX-) 6 (TX-)
3 (RX+) 1 (RX+)
6 (RX-) 2 (RX-)