Cisco Systems PA-2FE-FX, PA-2FE-TX manual 1 RJ-45 connector and port

Chapter 1 Overview

Receptacles, Cables, and Pinouts

Figure 1-5shows the RJ-45 cable connectors. Cisco does not supply Category 5 UTP RJ-45 cables; they are available from a commercial supplier. Table 1-3lists the pinouts and signals for the PA-2FE-TX RJ-45 connectors.

Figure 1-5 RJ-45 Port and Connector

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1

1RJ-45 connector and port

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Table 1-3 IRJ-45 Port Pinout Information

Pin

1

2

3

6

Description

TxD+1

TxD–

RxD+2

RxD–

1.TxD = Transmit data

2.RxD = Receive data

Note Referring to the RJ-45 pinout in Table 1-3, proper common-mode line terminations should be used for the unused Category 5, UTP cable pairs 4/5 and 7/8. Common-mode line termination reduces the contributions to electromagnetic interference (EMI) and susceptibility to common-mode sources. Wire pairs 4/5 and 7/8 are passively terminated in the RJ-45 100BASE-TX port circuitry in the PA-2FE-TX.

Depending on your RJ-45 interface cabling requirements, use the pinouts in Figure 1-6and Figure 1-7.

Figure 1-6

Ethernet port

1TxD+

2TxD–

3RxD+

6RxD–

Straight-Through Cable Pinout—PA-2FE-TX RJ-45 Connection to a Hub or Repeater

Hub

1 RxD+

2 RxD–

6 TxD–	38582
3 TxD+

PA-2FE-TX and PA-2FE-FX Two-Port Fast Ethernet Port Adapter Installation and Configuration

OL-3474-07 1-5