User’s Manual of FGSW-2620VM / FGSW-2620PVM

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

 

MDI-X

 

 

 

Media Dependant Interface

 

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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