Cables; 100Base-Tx/10Base-T Pin Assignments; Straight-Through Wiring - SMC Networks 6900FSC Installation Manual

100BASE-TX/10BASE-T Pin Assignments

With 100BASE-TX/10BASE-T cable, pins 1 and 2 are used for
transmitting data, and pins 3 and 6 for receiving data.
Pin Number
1
2
3
6
1: The "+" and "-" signs represent the polarity of
the wires that make up each wire pair.

Straight-Through Wiring

If the twisted-pair cable is to join two ports and only one of the
ports has an internal crossover (MDI-X), the two pairs of wires
must be straight-through.
Straight-Through RJ-45 Pin Assignments
End 1
1 (Tx+)
2 (Tx-)
3 (Rx+)
6 (Rx-)
RJ-45 Pin Assignments
Assignment
Tx+
Tx-
Rx+
Rx-
1
End 2
1 (Tx+)
2 (Tx-)
3 (Rx+)
6 (Rx-)
C
ABLES
B-3