Bridge/Router Installation and Configuration Guide

Chapter 2 Preparing for Installation
GRP Port Connection Guidelines
2-34
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
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Table 2-5 lists the signals used on the MII connector.
Ta b l e 2-5 GRP MII Ethernet Pinout
Pin
1
1. Pins not listed in the table are not used.
In Out
Input/
Output Description
14–17 – Yes – Transmit data (TxD)
12 Yes – – Transmit clock (Tx_CLK)
2
2. Tx_CLK and Rx_CLK are provided by the external transceiver.
11 – Yes – Transmit error (Tx_ER)
13 – Ye s – 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, 40 – – – +5 V