Auxiliary Port Signals; Fast Ethernet Connection Equipment - Cisco 7206 - VXR Router Installation Manual

Connecting I/O Controller Cables
Table 3-1
Pin
1
2
3
6
7
8

Auxiliary Port Signals

Table 3-2
and modem control.
Table 3-2
Pin
2
3
4
5
6
7
8
20

Fast Ethernet Connection Equipment

The I/O controller is available with or without a Fast Ethernet port. The I/O controller with a Fast
Ethernet port is equipped with either a single MII port or an MII port and an RJ-45 port (only one port
can be used at a time). Although still supported by Cisco Systems, the I/O controller equipped with the
single MII port was discontinued as an orderable product in May 1998. The following sections explain
Fast Ethernet MII and RJ-45 connection equipment.
Cisco 7206 Installation and Configuration Guide
3-16
Console Port Signals
Signal Direction
GND –
TxD <—
RxD —>
DSR —>
GND –
DCD —>
lists the signals used on the auxiliary port. The auxiliary port supports hardware flow control
Auxiliary Port Signals
Signal Direction Description
TxD —> Transmit Data
RxD <— Receive Data
RTS —> Request To Send (used for hardware flow
control)
CTS <— Clear To Send (used for hardware flow control)
DSR <— Data Set Ready
Signal – Signal Ground
Ground
CD <— Carrier Detect (used for modem control)
DTR —> Data Terminal Ready (used for modem control
only)
Description
Ground
Transmit Data
Receive Data
Data Set Ready (always on)
Ground
Data Carrier Detect (always
on)
Chapter 3 Installing the Cisco 7206
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