Intel S5500WB12V Product Specification - Page 92

Thermal Sensors

Page 92 highlights

Design and Environmental Specifications Intel® Server Board S5500WB TPS Table 54. Fan Connector Location & Detail FAN_CPU2 CPU 2 FAN_CPU2A PWM_CPU0 PWM_CPU0 Tach 3 Tach 7 J3E1 J2J2 LED_Fan_Fault_CPU0 LED_Fan_Fault_CPU0A FAN_MEM2 Memory 2 FAN_MEM2R PWM_MEM0 PWM_MEM0 Tach 4 Tach 4 & 8 J2J1 J1D5 LED_Fan_Fault_MEM0 LED_Fan_Fault_MEM0R Figure 29. Fans and Sensors Block Diagram 9.2 Thermal Sensors 9.2.1 Processor PECI Temperature Sensor The processor thermal control uses a CPU PECI thermal sensor, which is a relative temperature off PROCHOT# trip point (a -20C reading means 20C below PROCHOT# trip point temperature). The BMC can get the processor PECI Tcontrol values for each CPU installed to use/follow the clamped algorithm for component thermal sensor. The following sample SDR settings could be used:  Use Tcontrol (byte 8, bit 0 = 1): Tcontrol value is provided by BIOS via the Set CPU TControl command for the indicated CPU is used. 78 Revision 1.9 Intel order number E53971-008

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Design and Environmental Specifications
Intel® Server Board S5500WB TPS
Revision 1.9
Intel order number E53971-008
78
Table 54. Fan Connector Location & Detail
CPU 2
Memory 2
FAN_CPU2
FAN_CPU2A
FAN_MEM2
FAN_MEM2R
PWM_CPU0
PWM_CPU0
PWM_MEM0
PWM_MEM0
Tach 3
Tach 7
Tach 4
Tach 4 & 8
J3E1
J2J2
J2J1
J1D5
LED_Fan_Fault_CPU0
LED_Fan_Fault_CPU0A
LED_Fan_Fault_MEM0
LED_Fan_Fault_MEM0R
Figure 29. Fans and Sensors Block Diagram
9.2
Thermal Sensors
9.2.1
Processor PECI Temperature Sensor
The processor thermal control uses a CPU PECI thermal sensor, which is a relative
temperature off PROCHOT# trip point (a -20C reading means 20C below PROCHOT# trip point
temperature). The BMC can get the processor PECI Tcontrol values for each CPU installed to
use/follow the clamped algorithm for component thermal sensor. The following sample SDR
settings could be used:
Use Tcontrol (byte 8, bit 0 = 1): Tcontrol value is provided by BIOS via the
Set CPU
TControl
command for the indicated CPU is used.