User's Manual

1-6
Cisco 3200 Series Mobile Access Router Hardware Guide
OL-5816-04
Chapter 1 Mobile Access Router Card (MARC)
MARC Component Systems
LED Connections
Table 1-4 shows the MARC LEDs supported through the multifunction header that indicate system and
LAN status.
Power Connections (AUX)
A +5V power supply is provided for device connected to AUX port. A GPS modem is used as an example
in this section. Typically the +5V power supply current to GPS modems should be limited to less than
200 mA.
Table 1-5 shows the pin assignments for power.
MARC Power Requirements
The MARC uses +3.3 V, +5 V, and +12 V power sources. Internal on-board DC-to-DC conversion
circuitry generates 1.8 V/1.5 amps from the +3.3V power source.
Table 1-4 MARC LEDs Multifunction Header Pin Assignments
Pin Signal Description Function Indicates
10 LED_PWR Power–up status LED - (1) Indicates the router operating status. The LED blinks
during IOS bootup and is continuously on after the router
completes its self-test and begins operating. If the
ROMMON self–tests fail, this LED will be off.
27 +3.3V LED power supply LED + (1)
11 LED_LAN_ACT LAN activity status LED - (2) Blinks when a packet is either transmitted or received on
10/100 Fast Ethernet port.
28 +3.3V LED power supply LED + (2)
12 LED_LAN_LINK LAN link indicator LED - (3) Indicates the status of the 10/100 Fast Ethernet port. The
LED is on while the Ethernet link is up and connected to
another device.
29 +3.3V LED power supply LED + (3)
Table 1-5 MARC Multifunction Header Pin Assignments for Power
Pin Signal Description Function
9 GND Ground GND
26 +5V +5V DC Power Supply Power
Table 1-6 MARC Voltages
Voltage Current Power
+5.0 V 0.3 amps 1.5 W
+12.0 V 0.1 amps 1.2 W
+3.3 V 2.0 amps 6.6 W