Cisco 7204 Installing page 16

Connecting I/O Controller Cables
Table 3-3 lists the pinouts and signals for the I/O controller MII receptacle.
Table 3-3
1
Pin
14–17
12
11
13
3
4–7
9
10
8
18
19
2
22–39
1, 20, 21, 40
1. Any pins not indicated are not used.
2. Tx_CLK and Rx_CLK are provided by the external transceiver.
3-16 Cisco 7204 Installation and Configuration Guide
MII Connector Pinout
In Out I/O
– Yes –
Yes – –
– Yes –
– Yes –
– Yes –
Yes – –
Yes – –
Yes – –
Yes – –
Yes – –
Yes – –
– – Yes
– – –
– – –
Description
Transmit Data (TxD)
2
Transmit Clock (Tx_CLK)
Transmit Error (Tx_ER)
Transmit Enable (Tx_EN)
MII Data Clock (MDC)
Receive Data (RxD)
Receive Clock (Rx_CLK
Receive Error (Rx_ER)
Receive Data Valid (Rx_DV)
Collision (COL)
Carrier Sense (CRS)
MII Data Input/Output (MDIO)
Common (ground)
+5.0 volts (V)