Appendix A Switch's RJ-45 Pin Assignments

A.1 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::