1-6
PA-2FEISL 100BASE-T Fast Ethernet/ISL Port Adapter Installation and Configuration
OL-3475-02
Chapter 1 Overview
Cables, Connectors, and Pinouts
Note
Referring to the RJ-45 pinout in
, proper common-mode line terminations should be used for
the unused Category 5, unshielded twisted-pair (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, 100BASE-TX port
circuitry in the PA-2FEISL-TX.
Depending on your RJ-45 interface cabling requirements, use the pinouts in
Figure 1-6
Straight-Through Cable Pinout—PA-2FEISL-TX RJ-45 Connection to a Hub or Repeater
Figure 1-7
Crossover Cable Pinout—PA-2FEISL-TX RJ-45 Connections Between Hubs and Switches
shows the duplex SC connector (one required for both transmit and receive), and shows the
simplex SC connector (two required, one for each transmit and receive) used for PA-2FEISL-FX
optical-fiber connections. These multimode optical-fiber cables are commercially available, and are not
available from Cisco.
Figure 1-8
PA-2FEISL-FX Duplex SC Connector
Figure 1-9
PA-2FEISL-FX Simplex SC Connector
Hub or repeater
FEIP
5 TxD+
6 TxD–
3 RxD+
4 RxD–
5 RxD+
6 RxD–
3 TxD+
4 TxD–
H3137
Hub or LAN switch
3 TxD+
6 TxD–
1 RxD+
2 RxD–
3 TxD+
6 TxD–
1 RxD+
2 RxD–
H3138
Hub or LAN switch
H2214
H2399