Cooper Bussmann 5073E-T Manual de usuario Pagina 78

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Cooper Bussmann 5073E-T Managed Ethernet Switch User Manual
Rev Version 1.1
appENDIx a - rJ-45 pIN aSSIGNMENT
The UTP/STP ports will automatically detect fast Ethernet (10Base-T/100Base-TXconnections), 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 figures in this appendix for
straight through and crossover cable schematics.
10 /100BASE-TX Pinouts
With a 10/100BASE-TX cable, pins 1 and 2 are used for transmitting data, and pins 3 and 6 are used for receiving
data.
RJ-45 Pin Assignments
Pin Number Assignment
1 Tx+
2 Tx-
3 Rx+
6 Rx-
NOTE The “+” and “-” signs represent the polarity of the
wires that make up each wire pair.
The following table shows the 10/100BASE-TX MDI and MDI-X port pin outs.
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-)
10/100Base-TX Cable Schematic
Figure 87 and Figure 88 show the 10/100Base-TX cable schematic.
Figure 87 Straight-through Cable Schematic
Figure 88 Crossover Cable Schematic
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