Cisco Systems Cisco 12008 manual Ethernet RJ-45 Pinout, Pin Signal

Connecting Route Processor Cables

Table 3-3	Ethernet MII Pinout (Continued)
Pin1	In	Out	Input/Output	Description
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, 40	–	–	–	+5.0 volts (V)

1.Any pins not indicated are not used.

2.Tx_CLK and Rx_CLK are provided by the external transceiver.

Table 3-4	Ethernet RJ-45 Pinout
Pin	Signal
1	TX+
2	TX–
3	RX+
4	Termination Network
5	Termination Network
6	RX–
7	Termination Network
8	Termination Network

Figure 3-10 shows the pin orientation of the female RJ-45 receptacle on the Ethernet port.

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