Kontron EPIC/PM, Руководство пользователя

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22 21BImportant Technology Information
Kontron User's Guide
EPIC/PM
60
22 Important Technology Information
The following technological information is designed to give you a better understanding of some of the
features offered by the EPIC/PM. This information can be referenced when reading the Appendix A:
System Resource Allocations and
Appendix B: BIOS Operation sections that follow. There also are
references to additional documentation that will help you develop a better understanding of the
technical information. They are listed in the Appendix F: PC-Architecture Information.
22.1 Max CPU Frequency setting
Kontron Embedded Modules currently offers four variants of the EPIC/PM. They are the 600MHz, 800Mhz
and 1000MHz Celeron®-M versions and a 1800MHz Pentium® M version. Additional processor support is
planned. These variants use a smart BIOS with the capability of identifying the CPU that the module is
equipped with. Another feature of the BIOS is its ability to offer the user the option to set the maximum
CPU frequency based on the Intel® SpeedStep® technology.
Notes: Celeron® M processors do not support this feature.
The different Max CPU frequency settings available for the different modules are as follows:
®
600MHz: 600MHz
®
800MHz: 800MHz
®
1000MHz: 1000MHz
®
1800MHz: 600, 800, 1000, 1200, 1400, 1600, 1800MHz (def)
Notes: Selecting frequencies higher then the default may cause the system to reach “Critical Trip Point” and
shutdown if a proper cooling solution is not used. Always ensure that you use a proper cooling when selecting
higher frequency settings.
Refer to the Power Menu section in the Appendix B: BIOS Operation chapter of this manual for more
information.
22.2 Thermal Monitor and Catastrophic Thermal Protection
22.2.1 Thermal Monitor
The Thermal Monitor within the Pentium M processor helps to control the processor temperature by
activating the TCC (Thermal Control Circuit) when the processor silicon reaches its maximum operating
temperature. The temperature at which the Intel Thermal Monitor activates the TCC is not user-
configurable and is not software visible.
The Thermal Monitor controls the processor temperature by modulating (starting and stopping) the CPU
core clocks at a 50% duty cycle (TM1) or by initiating an Enhanced Intel SpeedStep® technology