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Definition
EXT_GPIN_4_P
EXT_GPIN_4_N
Definition
EXT_GPIN_5_P
EXT_GPIN_5_N
EXT_GPIN_6_P
EXT_GPIN_6_N
EXT_GPIN_7_P
EXT_GPIN_7_N
EXT_GPIN_8_P
EXT_GPIN_8_N
About 568A and 568B on an Ethernet connector RJ-45
TIA/EIA-568A and -568B are two standards for connecting Category 3 and Category 5 wire to connectors.
Both are appropriate for high speed data, though 568B is somewhat more common for installed wiring and
568A is more common in jumpers. There is no performance advantage either way. The only real difference
between the two is the order in which the pairs are used (orange and green).
Hold a cable as if to plug it into a wall jack, the locking tab down (contacts facing you). The contacts are
numbered 1-8 from left to right. Here's what you will see:
RJ-45 Pin Number
(Left >Right
copper side)
1
2
3
White/Orange
4
5
6
7
8
568A and 568B may be used interchangeably in a system SO LONG AS both ends of a given cable are
terminated the same way.
568A + 568B wiring is a crossover cable.
568A + 568A wiring is a straight cable.
568B + 568B wiring is a straight cable.
The mapping of the channels is done according to the Ethernet wiring scheme and gives us 100 Ohm per pair.
GPI 1-4
GPI 5-8
568A
White/Green
Green
Blue
White/Blue
Orange
White/Brown
Brown
Pin configurations
RJ-45 pin
7
8
RJ-45 pin
1
2
3
4
5
6
7
8
568B
AES -1-8
White/Orange
AES 1&2 +plus
Orange
AES 1&2
+minus
White/Green
AES 3&4 +plus
Blue
AES 5&6
+minus
White/Blue
AES 5&6 +plus
Green
AES 3&4
+minus
White/Brown
AES 7&8 +plus
Brown
AES 7&8
+minus
R5906897 /02
Prometheus III
191
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