3com 3C17300 Owner's Manual Page 69

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1000BASE-T RJ-45 Pin Assignments 69
Table 11 Pin assignments
1000BASE-T RJ-45
Pin Assignments
Table 12 and Table 13 show the pin assignments for the 1000BASE-T
RJ-45 connectors.
Table 12 Pin assignments
Pin Number Signal Function
Ports configured as MDIX
1 Receive Data + Bidirectional Data B+
2 Receive Data - Bidirectional Data B-
3 Transmit Data + Bidirectional Data A+
4 Not assigned Bidirectional Data A-
5 Not assigned Bidirectional Data D+
6 Transmit Data Bidirectional Data D-
7 Not assigned Bidirectional Data C+
8 Not assigned Bidirectional Data C-
Pin Number Signal Function
Ports configured as MDI
1 Transmit/Recieve A + Bidirectional Data A+
2 Transmit/Recieve A - Bidirectional Data A-
3 Transmit/Recieve B + Bidirectional Data B+
4 Transmit/Recieve C + Bidirectional Data C+
5 Transmit/Recieve C - Bidirectional Data C-
6 Transmit/Recieve B – Bidirectional Data B-
7 Transmit/Recieve D + Bidirectional Data D+
8 Transmit/Recieve D - Bidirectional Data D-
DUA1730-0AAA02.book Page 69 Thursday, January 23, 2003 12:28 PM
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