User's Manual

1-5
Cisco 3200 Series Mobile Access Router Hardware Guide
OL-5816-04
Chapter 1 Mobile Access Router Card (MARC)
MARC Component Systems
AUX Connections
The AUX port is a serial asynchronous port that works at speeds of 1.2 Kbps, 2.4 Kbps, 4.8 Kbps,
9.6 Kbps, 19.2 Kbps, 38.4 Kbps, 57.6 Kbps, and 115.2 Kbps. The console port and AUX port can be
accessed simultaneously. For example, you can connect a terminal to the console interface and an
external modem or a GPS modem to the AUX port.
The AUX port supports the following:
• Asynchronous serial DTE
• Baud rates range from 1,200 to 115,000
• 5 to 8 data bits
• 1, 1.5, or 2 stop bits
• Odd, even, or no parity
• Flow control by using RTS, CTS, DTR, and CDC signals
2 CON_TXD_OUT Transmit Data
19 GND Ground
3 GND Ground
20 CON_RXD_IN Receive Data
4 CON_DSR_IN Data Set Ready
21 CON_CTS_IN Clear To Send
Table 1-2 MARC Multifunction Header Console Interface Pin Assignments (continued)
Pin Signal Description
Table 1-3 MARC Multifunction Header AUX Pin Assignments
Pin Signal Description
5 AUX_RTS_OUT Request To Send
22 AUX_DTR_OUT Data Terminal Ready
6 AUX_TXD_OUT Transmit Data
23 GND Ground
7 AUX_DSR_IN Data Set Ready
24 AUX_RXD_IN Receive Data
8 AUX_CD_IN Carrier Detect
25 AUX_CTS_IN Clear To Send