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Cisco 7204 Installation and Configuration Guide
OL-5101-02
Chapter3 Installing the Cisco 7204 Connecting I/O Controller Cables
Figure3-14 Fast Ethernet Port Connection
Depending on the type of media you use between the MII connection and yo ur switch or hub, the network
side of your 100BASE-T transceiver should be appropriately equipped with ST-type connectors (for
optical fiber), BNC connectors, and so forth.
Figure 3-15 shows the pin orientation of the MII port on the I/O controller.
The MII port uses 2-56 screw-type locks, called jackscre ws , to secur e the cable or tr ansce i v er to the M II
port. MII cables and transceivers have knurle d thumbscr ews that you f asten to the jacksc re ws on the MI I
connector and tighten with your fingers. Use the jackscrews to sec ur e yo ur MI I ca ble to t he M II po rt.
Figure3-15 MII Port
Table 3 -2 lists the pinouts and signals for the I/O controller MII port.
MII
EN
RJ45
EN
RJ45
LINK
1O PWR
OK
RJ-45
CPU RESET
FAST ETHERNET INPUT/OUTPUT CONTROLLER
ENABLED
PCMCIA
EJECT
SLOT 0
SLOT 1
FE MII
H6853
Optional Fast Ethernet port
(MII receptacle and RJ-45 receptacle)
MII connector
To transceiver,
repeater, or DTE To repeater
or DTE
RJ-45 connector
or
Jackscrew Pin 21
Pin 1
H6538
Table3-3 MII Port Pinout
Pin1In Out I/O Description
14–17 –Yes –Transmit Data (TxD)
12 Yes ––Transmit Clock (Tx_CLK)2
11 –Yes –Transmit Error (Tx_ER)
13 –Yes –Transmit Enable (Tx_EN)
3–Yes –MII Data Clock (MDC)
4–7Yes––Receive Data (RxD)
9Yes––Receive Clock (Rx_CLK)
10 Yes ––Receive Error (Rx_ER)