
67
Table 29
RJ-45 MDI port pinouts
10Base-T/100Base-TX 1000Base-T
Pin
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 30
RJ-45 MDIX port pinouts
10Base-T/100Base-TX 1000Base-T
Pin
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-
6 Tx- Sends
data
BIDA-
Bi-directional data
cable A-
7 Reserved
N/A
BIDC+
Bi-directional data
cable C+
8 Reserved
N/A
BIDC-
Bi-directional data
cable C-
To ensure normal communication, the pins for sending data on one port must correspond to the pins for
receiving data on the peer port. When both of the ports on the two devices are MDI or MDIX, use a
crossover Ethernet cable; when one port is MDI and the other is MDIX, use a straight-through Ethernet
cable. To summarize, straight-through and crossover cables connect the following devices:
Содержание SR6602
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Страница 82: ...74 Figure 63 RS449 DTE cable Figure 64 RS449 DCE cable Figure 65 RS530 DTE cable Figure 66 RS530 DCE cable...
Страница 88: ...80 I type 0404A01A 3 m i e 9 8 ft Australia Connector outline Power cable outline Connector outline...