Appendix a—rj-45 pin assignment, A.1 switch's rj-45 pin assignments, A.2 10/100mbps, 10/100base-tx – PLANET ISW-1022MPT User Manual
Page 161: Witch, Rj-45, Ssignments, 10/100m, 10/100b
User’s Manual of ISW-1022M Series and ISW-1033MT
Appendix A—RJ-45 Pin Assignment
A.1 Switch's RJ-45 Pin Assignments
1000Mbps, 1000Base T
Contact
MDI
MDI-X
1 BI_DA+ BI_DB+
2 BI_DA- BI_DB-
3 BI_DB+ BI_DA+
4 BI_DC+ BI_DD+
5 BI_DC- BI_DD-
6 BI_DB- BI_DA-
7 BI_DD+ BI_DC+
8 BI_DD- BI_DC-
Implicit implementation of the crossover function within a twisted-pair cable, or at a wiring panel, while not expressly
forbidden, is beyond the scope of this standard.
A.2 10/100Mbps, 10/100Base-TX
When connecting your 10/100Mbps Ethernet Switch to another switch, a bridge or a hub, a straight or crossover cable is
necessary. Each port of the Switch supports auto-MDI/MDI-X detection. That means you can directly connect the Switch
to any Ethernet devices without making a crossover cable. The following table and diagram show the standard RJ-45
receptacle/ connector and their pin assignments:
RJ-45 Connector pin assignment
Contact
MDI
Media Dependant Interface
MDI-X
Media Dependant Interface-Cross
1
Tx + (transmit)
Rx + (receive)
2
Tx - (transmit)
Rx - (receive)
3
Rx + (receive)
Tx + (transmit)
4, 5
Not used
6
Rx - (receive)
Tx - (transmit)
7, 8
Not used
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