Cisco PA-FE-FX Spezifikationen PDF herunterladen (Seite 12)

Receptacles, Cables, and Pinouts

PA-FE-TX and PA-FE-FX Fast Ethernet 100BaseT Port Adapter Installation and Configuration

1-6

Figure 1-8 shows the RJ-45 cable connectors. Cisco Systems does not supply Category 5 UTP RJ-45

cables; these cables are available commercially. Table 1-1 lists the pinouts and signals for the

PA-FE-TX RJ-45 connectors.

Figure 1-8 PA-FE-TX RJ-45 Connections—Plug and Receptacle

Warning

The ports labeled “Ethernet,” “10BaseT,” “Token Ring,” “Console,” and “AUX” are

safety extra-low voltage (SELV) circuits. SELV circuits should only be connected to other SELV

circuits. Because the BRI circuits are treated like telephone-network voltage, avoid connecting the

SELV circuit to the telephone network voltage (TNV) circuits.

Table 1-1 PA-FE-TX RJ-45 Connector Pinout

Note Referring to the RJ-45 pinout in Table 1-1, proper common-mode line terminations should be

used for the unused Category 5, UTP cable pairs 4/5 and 7/8. Common-mode termination reduces

the contributions to electromagnetic interference (EMI) and susceptibility to common-mode

sources. Wire pairs 4/5 and 7/8 are actively terminated in the RJ-45, 100BaseTX port circuitry in the

PA-FE-TX.

Depending on your RJ-45 interface cabling requirements, use the pinouts in Figure 1-9 and

Figure 1-10.

Figure 1-9 Straight-Through Cable Pinout—PA-FE-TX RJ-45 Connection to a Hub or

Repeater

Pin Description

1 Receive Data + (RxD+)

2 RxD–

3 Transmit Data + (TxD+)

6 TxD–

H2936

8 7 6 5 4 3 2 1

RJ-45 connector

Hub or repeaterFEIP

3 TxD+

6 TxD–

1 RxD+

2 RxD–

3 RxD+

6 RxD–

1 TxD+

2 TxD–

H3137

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Cisco PA-FE-FX Spezifikationen Seite 12