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The ZT 5504 is supplied with a heatsink allowing 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 ZT 5504 is installed in a chassis capable
of supplying adequate airflow. The maximum power dissipation of the processor (BGA2
package) is 21W. External airflow must be provided at all times. See Appendix A,
"Specifications," and Appendix B,
It is strongly recommended that the airflow be measured while the ZT 5504 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 ZT 5504 during airflow measurements
(slightly disengage the ZT 5504 from the backplane connectors if necessary).
CAUTION:
of ambient temperature or usage. This may result in permanent damage to the processor.
The ZT 5504 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/.
Memory Configuration
The ZT 5504 addresses up to 4 GB of memory. The address space is divided between memory
local to the board and memory located on the Local PCI (or CompactPCI) bus. Any memory not
reserved or occupied by a local memory device (DRAM/flash) is available to PCI memory
devices.
The ZT 5504 includes 512 MB or 1 GB of ECC SDRAM soldered directly onto the board.
256 KB of L2 cache is integrated with the Mobile Pentium III Processor - M.
Local flash memory is soldered directly to the board. The ZT 5504 supports 4 MB of flash
memory divided into 512 KB pages.
The
"Memory Address Map
ZT 5504.
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"Thermal
The processor "core" temperature must never exceed 100°C under any condition
Example" illustration shows example memory addressing for the
Considerations," for more details.
2. Getting Started
25
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