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Configuration 5V
(avg)
5V
(peak)
3.3V
(avg)
3.3V
(peak)
12V
(avg)
12V
(peak)
-12V
(avg)
-12V
(peak)
1.7GHz / 512MB 6.9A TBD* 2.4A TBD* 20mA 50mA 0.0A 0.0A
Hard disk (add)
(typical)
540mA 1.00A N/A N/A N/A N/A N/A N/A
PMC card typical
1
(add)
1.00A 1.70A 0.75A 1.30A 100mA 200mA 20mA 40mA
PMC card max.
2
(add)
1.50A 3.00A 2.25A 4.50A 500mA 500mA 500mA 500mA
* Peak (short duration) power supply current may be significantly higher (up to 50%) and will
vary depending upon the application.
Notes:
1. Consult manufacturer of installed PMC card for actual values.
2. In no case shall the total power dissipated by the PMC card exceed 10.0 W.
The cPB-4612 comes with a heatsink that allows the processor to operate between 0° and approximately
50°C ambient with a minimum of 200 LFM (1 meter per second) of external airflow. It is the users'
responsibility to ensure that the cPB-4612 is installed in a chassis capable of supplying adequate airflow.
The maximum power dissipation of the processor (FCBGA package) is 25W. External airflow must be
provided at all times. See Appendix A, "Specifications," and Appendix C, "Thermal Considerations," for
more details.
It is strongly recommended that the airflow be measured while the cPB-4612 is installed in its intended
location. Insert a thermistor type air velocity meter (Kane-May KM4007 or similar) through the PMC
access on the faceplate and make the air velocity measurement near the processor heat sink. Power
should not be applied to the cPB-4612 during airflow measurements (slightly disengage the cPB-4612
from the backplane connectors if necessary).
CAUTION: The processor "core" temperature must never exceed 100°C under any condition
of ambient temperature or usage. This may result in permanent damage to the processor.
The cPB-4612 may contain materials that require regulation upon disposal. Please dispose of this product
in accordance with local rules and regulations. For disposal or recycling information, please contact your
local authorities or the Electronic Industries Alliance at http://www.eiae.org/**.
2.3 Memory Configuration
The cPB-4612 components can address up to 4 GB of memory, but the board only has two SO-DIMM
sockets and can physically only hold two sticks of memory. The address space is divided between
memory local to the board and memory located on the Local PCI bus. Any memory not reserved or
occupied by a local memory device (DRAM/flash) is available to PCI memory devices.
The cPB-4612 can support up to two sticks of either 256 MB, 512 MB, 1 GB DDR SDRAM. 1MB of
L2 cache is integrated with the Pentium
®
–M processor.