Appendix A: Technical Specifications

RJ-45 Twisted Pair Port Pinouts

Figure 49 illustrates the pin layout of an RJ-45 connector and port.

Pin 1

Figure 49. RJ-45 Connector and Port Pin Layout

Table 13 lists the pin signal definitions when a port is operating in the MDI configuration at 10 or 100 Mbps.

Table 13. MDI Pin Signals - 10 or 100 Mbps

Pin

Signal

 

 

 

 

1

TX+

 

 

2

TX-

 

 

3

RX+

 

 

6

RX-

 

 

Table 14 lists the pin signal definitions when a port is operating in the MDI-

X configuration at 10 or 100 Mbps.

Table 14. MDI-X Pin Signals - 10 or 100 Mbps

Pin

Signal

 

 

 

 

1

RX+

 

 

2

RX-

 

 

3

TX+

 

 

6

TX-

 

 

The MDI/MDI-X setting is established automatically when a port is set to

Auto-Negotiation. If a port’s speed and duplex are set manually, the MDI/

MDI-X setting defaults to the MDI-X setting.

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