
426
Connectors and pin assignments
320985-A Rev 01
lists the RJ-45 (8-pin modular) port connector pin assignments.
MDI and MDI-X devices
Media dependent interface (MDI) is the IEEE standard for the interface to
unshielded twisted pair (UTP) cable.
For two devices to communicate, the transmitter of one device must connect to the
receiver of the other device. The connection is established through a crossover
function, which can be a crossover cable or a port that implements the crossover
function internally.
Ports that implement the crossover function internally are known as MDI-X ports,
where X refers to the crossover function.
The following sections describe the use of straight-through and crossover cables
for connecting MDI and MDI-X devices.
Table 164
RJ-45 port connector pin assignments
Pin
Signal
Description
1
RX+
Receive Data +
2
RX-
Receive Data -
3
TX+
Transmit Data +
4
Not applicable
Not applicable
5
Not applicable
Not applicable
6
TX-
Transmit Data -
7
Not applicable
Not applicable
8
Not applicable
Not applicable
Note:
For the transmitter of one device to connect to the receiver of
another device, the total number of crossovers must always be an odd
number.
Содержание 425-24T
Страница 20: ...20 Contents 320985 A Rev 01 ...
Страница 38: ...38 Preface 320985 A Rev 01 ...
Страница 188: ...188 Chapter 4 Getting Started with Device Manager 320985 A Rev 01 Figure 64 Line graph Figure 65 Area graph ...
Страница 189: ...Chapter 4 Getting Started with Device Manager 189 System Configuration Guide Figure 66 Bar graph Figure 67 Pie graph ...
Страница 198: ...198 Chapter 4 Getting Started with Device Manager 320985 A Rev 01 ...
Страница 212: ...212 Chapter 5 Using the Web based management interface 320985 A Rev 01 ...
Страница 318: ...318 Chapter 7 System configuration using the CLI 320985 A Rev 01 ...
Страница 336: ...336 Chapter 8 Ethernet port management using the CLI 320985 A Rev 01 ...
Страница 384: ...384 Chapter 11 Administering the switch using Web based management 320985 A Rev 01 ...
Страница 404: ...404 Chapter 12 Configuring the switch using Web based management 320985 A Rev 01 ...
Страница 424: ...424 Installing an SFP Transceiver 320985 A Rev 01 ...
Страница 442: ...442 Default settings 320985 A Rev 01 ...
Страница 468: ...468 Command List 320985 A Rev 01 ...
Страница 474: ...474 Technical specifications 320985 A Rev 01 ...
Страница 488: ...488 Index 320985 A Rev 01 ...