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AT-9400 Stack Installation Guide

RJ-45 Twisted Pair Port Pinouts

Figure 36 illustrates the pin layout of an RJ-45 connector and port.

Figure 36. RJ-45 Connector and Port Pin Layout

Table 10 lists the pin signals when a port is operating in the MDI

configuration at 10 or 100 Mbps.

Table 11 lists the pin signals when a port is operating in the MDI-X

configuration at 10 or 100 Mbps.

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.

Table 10. MDI Pin Signals - 10 or 100 Mbps

Pin Signal

1TX+

2TX-

3RX+

6RX-

Table 11. MDI-X Pin Signals - 10 or 100 Mbps

Pin Signal

1RX+

2RX-

3TX+

6TX-

Pin 1

1 2 ... 90 91 92 93 94 95 96 97 98 99 100

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