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Figure 61 Crossover cable

Select an Ethernet twisted pair cable according to the RJ-45 Ethernet port type on your device. An

RJ-45 Ethernet port can be MDI (for routers and PCs) or MDIX (for switches). Table 33 an

d Table 34

show their pinouts.

Table 33 RJ-45 MDI port pinouts

10BASE-T/100BASE-TX 1000BASE-T

Signal Function Signal Function

1 Tx+ Sends data BIDA+ Bi-directional data cable A+

2 Tx- Sends data BIDA- Bi-directional data cable A-

3 Rx+ Receives data BIDB+ Bi-directional data cable B+

4 Reserved N/A BIDC+ Bi-directional data cable C+

5 Reserved N/A BIDC- Bi-directional data cable C-

6 Rx- Receives data BIDB- Bi-directional data cable B-

7 Reserved N/A BIDD+ Bi-directional data cable D+

8 Reserved N/A BIDD- Bi-directional data cable D-

Table 34 RJ-45 MDIX port pinouts

10BASE-T/100BASE-TX 1000BASE-T

Signal Function Signal Function

1 Rx+ Receives data BIDB+ Bi-directional data cable B+

2 Rx- Receives data BIDB- Bi-directional data cable B-

3 Tx+ Sends data BIDA+ Bi-directional data cable A+

4 Reserved N/A BIDD+ Bi-directional data cable D+

5 Reserved N/A BIDD- Bi-directional data cable D-

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