System Considerations
CP6000
Page 7 - 6
© 2005 Kontron Modular Computers GmbH
ID 27942, Rev. 05
2794
2.05.UG.VC.051020/17275
8
P R E L I M I N A R Y
7.2.2
Forced Air Flow
When developing applications using the CP6000, the system integrator must be aware of the
overall system thermal requirements. System chassis must be provided which satisfy these re-
quirements. As an aid to the system integrator, a characteristics graph is provided for the
CP6000.
The values have been measured using typical applications running under Windows® 2000. In
worst case situations, the values vary and the temperature range must be reduced. In all situ-
ations, the maximum case temperature of the Pentium® M processor and the Ethernet control-
ler must be kept below the maximum allowable temperature. This temperature value can be
measured with the onboard remote temperature sensor. To ensure functionality at the maxi-
mum temperature, the BIOS supports a temperature control feature. In instances of overtem-
perature the hardware monitor will reduce the processor clock speed to reduce power
consumption.
The maximum case temperatures for both processor types is a follows:
• Pentium® M: all versions: 100 °C
• Celeron® M: all versions: 100 °C
In addition to the Pentium® M processor, the two Gigabit Ethernet controllers need protection
against overheating to provide a reliable operation of the CP6000 at operating temperatures up
to +85 °C. The two Gigabit Ethernet controllers must be connected to the heat sink to ensure
that sufficient heat is absorbed from them. For the standard temperature range (0 °C to +60 °C)
the standard heat sink can be used, whereas the CP6000 for extended temperature range (-
40 °C to +85 °C) requires a larger heat sink with connection to the Ethernet controller.
The following table indicates the Intel® 82546 Gigabit Dual Ethernet controller power supply
characteristics.
Warning!
If the CP6000 is operating at a higher temperature than +70 °C and not suffi-
cient airflow is available, the performance of the Dual Ethernet controller must
be reduced either by connecting only one Gigabit Ethernet interface to the con-
troller (one on the front and one on the rear) or by reducing the transfer rate to
Fast Ethernet (100 Base-TX). Failure to comply with the above may result in
damage to your board.
In order to disable the Ethernet Port, the cable must be removed. If the Ethernet
Port is connected to the receiver, it requires the same power regardless of
whether the data transfer takes place or not.
Table 7-1: Intel® 82546 Dual Gigabit Ethernet Controller Power Supply
ETHERNET PORTS
SPEED
POWER
BOTH ETHERNET PORTS UNPLUGGED
--
0.65 W
BOTH ETHERNET PORTS PLUGGED
(2 X FRONT AND 2 X REAR)
100 Mbs
1 W
BOTH ETHERNET PORTS PLUGGED
(2 X FRONT AND 2 X REAR)
1000 Mbs
3.2 W
ONE ETHERNET PORT PLUGGED
(1 X FRONT AND 1 X REAR)
1000 Mbs
1.9 W
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