
Chapter 3 Installing the Router
Connecting to the Console and Auxiliary Ports
| Table  | Ethernet MII Pin Configuration (continued) | 
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| Pin1 | In | Out | Input/Output | Description | Code | 
| 9 | Yes | – | – | Receive Clock | Rx_CLK | 
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| 10 | Yes | – | – | Receive Error | Rx_ER | 
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| 8 | Yes | – | – | Receive Data Valid | Rx_DV | 
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| 18 | Yes | – | – | Collision | COL | 
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| 19 | Yes | – | – | Carrier Sense | CRS | 
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| 2 | – | – | Yes | MII Data | MDIO | 
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 | Input/Output | 
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| 22 to 39 | – | – | – | Common | Ground | 
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| 1, 20, 21, 40 | – | – | – | +5.0 V | V | 
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1.Unlisted pins are not used.
2.Tx_CLK and Rx_CLK are provided by the external transceiver.
Figure 3-13 shows the pin configuration on the Ethernet RJ-45  receptacle on the GRP. Table 3-6 lists the signal-to-pin  correspondence for the Ethernet RJ-45  receptacle on the GRP.
Figure 3-13  Ethernet RJ-45  Receptacle
87654321
H2936
Table 
| Pin | Signal | 
1TX+
2TX–
3RX+
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 | Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide | 
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