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Input/Output Controller Replacement Instructions 41

I/O Controller Connection Equipment and Port Signaling

Figure 25 MII Receptacle

Table 6 lists the pinouts and signals for the I/O controller MII receptacle.

Table 6 MII Receptacle Pinout

Fast Ethernet RJ-45 Connection Equipment

The RJ-45 receptacle on the I/O controller is conﬁgurable for 100 megabits per second (Mbps) and

supports IEEE 802.3, Ethernet, and IEEE 802.3u interfaces complaint with 10BASE-T and

100BASE-TX speciﬁcations.

The RJ-45 receptacle supports standard straight-through and crossover Category 5 UTP (RJ-45)

cables. (See Figure 24.) Cisco Systems does not supply Category 5 UTP cables; these cables are

available commercially.

Figure 26 shows the RJ-45 receptacle and plug. Table 7 lists the pinouts and signals for the RJ-45

receptacle.

1 Any pins not indicated are not used.

In Out I/O Description

14–17 – Yes – Transmit Data (TxD)

12 Yes – – Transmit Clock (Exactly)

2 Exactly and Rx_CLK are provided by the external transceiver.

11 – Yes – Transmit Error (Tx_ER)

13 – Yes – Transmit Enable (Tx_EN)

3 – Yes – MII Data Clock (MDC)

4–7 Yes – – Receive Data (RxD)

9 Yes – – Receive Clock (Rx_CLK)

10 Yes – – Receive Error (Rx_ER)

8 Yes – – Receive Data Valid (Rx_DV)

18 Yes – – Collision (COL)

19 Yes – – Carrier Sense (CRS)

2 – – Yes MII Data Input/Output (MDIO)

22–39 – – – Common (ground)

1, 20, 21,

– – – +5.0 volts (V)

Jackscrew Pin 21

Pin 1

H6538

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 51 52

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Cisco C7200-I - Input/Output Controller - Control Processor Specifiche Pagina 41