Legacy Fan Speed Control
Thermal and Mechanical Design Guidelines
107
spike smoothing). Please select the lowest setting available close to 4.0 seconds by the
fan speed control device
4.
The Fan Speed Controller, or Health Monitor Component, takes the result of the two fan
speed ramps (processor and system) and drives the TMA fan to the highest resulting
PWM duty cycle (%)
5.
For BTX systems a second thermal sensor is recommended to capture chassis ambient
for more detail see
Appendix F.
6.
To ensure compliance with the thermal specification, thermal profile and usage of the
T
SENSOR
for fan speed control these setting should not be user configurable.
7.
If this function is present on the device it must be enabled
Note:
The fan speed component vendors provide libraries that are used by the BIOS writer
to program the component registers with the parameters listed above. Consult the
appropriate vendor datasheet for detailed information on programming their
component.
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Summary of Contents for QX68000 Core 2 Extreme
Page 30: ...LGA775 Socket Heatsink Loading 30 Thermal and Mechanical Design Guidelines...
Page 74: ...Heatsink Clip Load Metrology 74 Thermal and Mechanical Design Guidelines...
Page 76: ...Thermal Interface Management 76 Thermal and Mechanical Design Guidelines...
Page 96: ...Case Temperature Reference Metrology 96 Thermal and Mechanical Design Guidelines...
Page 108: ...Legacy Fan Speed Control 108 Thermal and Mechanical Design Guidelines...
Page 112: ...BTX System Thermal Considerations 112 Thermal and Mechanical Design Guidelines...
