10Base-T/100Base-Tx Pin Assignments - SMC Networks SMC9432BTX User Manual

10BASE-T/100BASE-TX Pin Assignments

With 10BASE-T/100BASE-TX cable, pins 1 and 2 are used for
transmitting data, and pins 3 and 6 for receiving data. The "+" and
"-" signs in the tables below are used to represent the polarity of
the wires that make up each wire pair.
R J 4 -
P n i N u
1
2
3
6
Straight-Through Wiring
If the twisted-pair cable is to join two ports and only one of the
ports has an internal crossover, the two pairs of wires must be
straight-through.
5 P n i A s s g i n m
m b r e A s s g i
T
T
R
R
t S a r g i t h T - h r o
E n d 1
1 T ( x ) +
2 T ( x ) -
3 R ( x ) +
6 R ( x ) -
e n s t
n m e t n
x +
- x
x +
- x
u g h R J 4 - 5 P n i A s s g i n m e n s t
E n d 2
1 T ( x ) +
2 T ( x ) -
3 R ( x ) +
6 R ( x ) -
C
ABLES
B-3