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Ethernet (RJ45) Cable Specifications and Pin Assignments
Figure 3
Table 8 - Cable Specification
Cable Type Max. Length Connector
10BASE-T Cat. 3, 4, 5 100-ohm UTP 100 m (328 ft) RJ45
Table 9 - J1 Ethernet
Pin
Number
MDI Signal Name MDI-X Signal Name
1 Transmit Data (TD+) Receive Data (RD+)
2 Transmit Data (TD-) Receive Data (RD-)
3 Receive Data (RD+) Transmit Data (TD+)
6 Receive Data (RD-) Transmit Data (TD-)
Pins 4, 5, 7, and 8 are not connected.
Table 10
Straight-Through
RJ-45 Pin
Assignments
End 1 End 2
1 (TD+) 1 (TD+)
2 (TD-) 2 (TD-)
3 (RD+) 3 (RD+)
6 (RD-) 6 (RD-)
Table 11
Crossover RJ-45
Pin Assignments
End 1 End 2
1 (TD+) 3 (RD+)
2 (TD-) 6 (RD-)
3 (RD+) 1 (TD+)
6 (RD-) 2 (TD-)
MicroGate™ User Manual 11