SMC Networks SMC8624T Manuel d'utilisateur télécharger pdf (Page 58)

ABLES

B-2

10BASE-T/100BASE-TX Pin Assignments

Use unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable for

RJ-45 connections: 100-ohm Category 3 or better cable for 10 Mbps

connections, or 100-ohm Category 5 or better cable for 100 Mbps or

1000 Mbps connections. Also be sure that the length of any twisted-pair

connection does not exceed 100 meters (328 feet).

The RJ-45 ports on the switch base unit support automatic MDI/MDI-X

operation, so you can use straight-through cables for all network

connections to PCs or servers, or to other switches or hubs. In

straight-through cable, pins 1, 2, 3, and 6, at one end of the cable, are

connected straight through to pins 1, 2, 3, and 6 at the other end of the

cable.

Table B-1. 10/100BASE-TX MDI and MDI-X Port Pinouts

Pin MDI-X Assignment MDI Assignment

1 Input Receive Data + Output Transmit Data +

2 Input Receive Data - Output Transmit Data -

3 Output Transmit Data + Input Receive Data +

6 Output Transmit Data - Input Receive Data -

4,5,7,8 Not used Not used

Note: The “+” and “-” signs represent the polarity of the wires that

make up each wire pair.

1 2 ... 53 54 55 56 57 58 59 60 61 62 63 ... 79 80

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SMC Networks SMC8624T Manuel d'utilisateur Page 58