Specifications

Second-Generation Fast Ethernet Interface Processor (FEIP2) Installation and Configuration 19
What Is the FEIP2?
FEIP2 Receptacles, Cables, and Pinouts
The two interface receptacles on each Fast Ethernet interface are a single MII, 40-pin, D-shell type
receptacle, and a single RJ-45 receptacle (or SC-type for FEIP2-2FX optical-fiber connections).
(See the FEIP2-2TX in Figure 10 and the FEIP2-2FX in Figure 11.)
You can use either one receptacle or the other; only one receptacle can be used at one time. Each
connection supports IEEE 802.3u interfaces compliant with the 100BASE-X and 100BASE-T
standards. The RJ-45 connection does not require an external transceiver. The MII connection
requires an external physical sublayer (PHY) and an external transceiver. Cisco Systems does not
supply Category 5 UTP RJ-45 cables; these cables are available commercially.
Caution To prevent system problems, do not simultaneously connect cables to the RJ-45 (or SC)
and MII receptacles on a single FEIP2, FE interface. Each FE interface (100BASE-FX or
100BASE-TX) can have either an MII attachment or an RJ-45 (or SC) attachment, but not both. The
MII and RJ-45 (or SC) receptacles represent two physical connection options for one FE interface.
Figure 10 Single FEIP2-2TX Fast Ethernet Interface (Faceplate View)
Figure 11 Single FEIP2-2FX Fast Ethernet Interface (Faceplate View)
The RJ-45 connection does not require an external transceiver. The MII connection requires an
external physical sublayer (PHY) and an external transceiver. Figure 12 shows the RJ-45 cable
connectors. RJ-45 cables are not available from Cisco Systems, but are available from commercial
cable vendors. Table 4 lists the pinouts and signals for the RJ-45 connectors.
Figure 12 RJ-45 Connections, Plug and Receptacle (FEIP2-2TX)
H4495
ENABLED
MII LINK RJ45
FAST ETHERNET
0
H6014
ENABLED
MII LINK FIBER
0
FAST ETHERNET
RX
TX
H2936
8 7 6 5 4 3 2 1
RJ-45 connector