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Cisco 3200 Series Router Hardware Reference
OL-5816-10
Chapter 2 Cisco 3270 Rugged Router Card
Cisco 3270 Rugged Router Card Power Requirements
The Cisco 3270 Rugged Router card uses +3.3 V, +5 V, and +12 V power sources. Typical power
consumption is 20 W. The maximum calculated wattage is 26.5 W.
Power Connections (AUX)
The speed of the AUX port for the Cisco 3270 Rugged Router card can be configured as 2400, 4800,
9600, 19200, 38400, 57600, 115200, 230400, or 460800 bps. Use the
line aux
linenumber speed
command to modify the speed of the port.
A +5V power supply is provided for devices connected to the AUX port. A Global Positioning System
(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 2-2
shows the pin assignments for power on the AUX port.
Hardware Encryption Processor
The Cisco 3270 Rugged Router card integrated security engine (SEC 2.0) is optimized to handle all the
algorithms associated with IPSec, Secure Sockets Layer (SSL)/Transport Layer Security (TLS), Secure
Real-time Transport Protocol (SRTP), 802.11i, Internet SCSI (iSCSI), and Internet key exchange (IKE)
processing. The security engine contains four crypto channels, a controller, and a set of crypto execution
units (EUs).
The SEC can act as a master on the internal bus. This allows the SEC to alleviate the data movement
bottleneck normally associated with slave-only cores. The host processor accesses the SEC through its
device drivers, using system memory for data storage. The SEC resides in the peripheral memory map
of the processor; therefore, when an application requires cryptographic functions, it creates descriptors
for the SEC that define the cryptographic function to be performed and the location of the data.
The SEC bus-mastering capability permits the host processor to set up a crypto channel with a few short
register writes, leaving the SEC to perform reads and writes on system memory to complete the required
task.
Table 2-1
Cisco 3270 Rugged Router Card Voltages
Voltage
Current
Power
+3.3 V
1.8 A
5.9 W
+5.0 V
4.0 A
20.0 W
+12.0 V
0.05 A
0.6 W
Table 2-2
Cisco 3270 Rugged Router Card Multifunction Header Pin Assignments for Power
Pin
Signal
Description
Function
9
GND
Ground
GND
26
+5 V
+5 V DC Power Supply
Power
