SMC Networks SMC7401BRA Manuel d'utilisateur télécharger pdf (Page 93)

RJ-45 P

ORT

B-3

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.

Crossover Wiring

If the twisted-pair cable is to join two ports and both ports use an internal

crossover (MDI-X) or neither port uses an internal crossover (MDI),

crossover cable must be used.

Straight-Through Cable Pin Assignments

End 1 End 2

1 (Tx+) 1 (Tx+)

2 (Tx-) 2 (Tx-)

3 (Rx+) 3 (Rx+)

6 (Rx-) 6 (Rx-)

Crossover Cable Pin Assignments

End 1 End 2

1 (Tx+) 3 (Rx+)

2 (Tx-) 6 (Rx-)

3 (Rx+) 1 (Tx+)

6 (Rx-) 2 (Tx-)

1 2 ... 88 89 90 91 92 93 94 95 96 97 98 ... 108 109

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SMC Networks SMC7401BRA Manuel d'utilisateur Page 93