ETHERNET CABLE

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.

 

RJ-45 Pin Assignments

 

 

 

Pin Number

 

Assignment1

1

 

Tx+

 

 

 

2

 

Tx-

 

 

 

3

 

Rx+

 

 

 

6

 

Rx-

 

 

 

1:The “+” and “-” signs represent the polarity of the wires that make up each wire pair.

Straight-Through Wiring

If the port on the attached device has internal crossover wiring (MDI-X), then use straight-through cable.

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-)

 

 

 

 

B-3

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SMC Networks SMC7904WBRA, SMC7904WBRB manual Pin Assignments, Straight-Through Wiring