What Is the FEIP?
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 2 lists the pinouts and signals for the RJ-45 connectors.
Figure 12 RJ-45 Connections (Connector and Plug)
Warning The ports labeled “Ethernet,” “10BASE-T,” “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 2 | RJ-45 Connector Pinout |
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Pin | Description |
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1 | Receive Data + (RxD+) |
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2 | RxD– |
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3 | Transmit Data + (TxD+) |
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6 | TxD– |
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Note Referring to the RJ-45 pinout in Table 2, 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, 100BASE-TX port circuitry in the FEIP port adapter.
18Fast Ethernet Interface Processor (FEIP) Installation and Configuration
