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73AT-IFS802SP-80 User Manual

Appendix A—RJ-45 Pin Assignment

RJ-45 Pin Assignments

The UTP/STP ports will automatically sense for Fast Ethernet (10Base-T/100Base-TX connections), •

or Gigabit Ethernet (10Base-T/100Base-TX/1000Base-T connections). Auto MDI/MDIX means

that the switch can connect to another switch or workstation without changing straight through

orcrossovercabling.Seetheguresbelowforstraightthroughandcrossovercableschematic.

10 /100BASE-TX Pin outs•

With10/100BASE-TX cable, pins 1 and 2 are used for transmitting data, and pins 3 and 6 for

receiving data.

RJ-45 Pin Assignments•

Pin Number Assignment

1 Tx+

2 Tx-

3 Rx+

6 Rx-

[note]

“+” and “-” signs represent the polarity of the wires that make up each wire pair.

Pin Number MDI-X Signal Name MDI Signal Name

1 Receive Data plus (RD+) Transmit Data plus (TD+)

2 Receive Data minus (RD-) Transmit Data minus (TD-)

3 Transmit Data plus (TD+) Receive Data plus (RD+)

6 Transmit Data minus (TD-) Receive Data minus (RD-)

The table below shows the 10/100BASE-TX MDI and MDI-X port pin outs.

1 2 ... 72 73 74 75 76 77 78 79 80 81 82 ... 100 101

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