Thermal Sensors; Processor Peci Temperature Sensor; Figure 29. Fans And Sensors Block Diagram; Table 54. Fan Connector Location & Detail - Intel S5500WB12V Specification

Design and Environmental Specifications
CPU 2
FAN_CPU2
PWM_CPU0
Tach 3
J3E1
LED_Fan_Fault_CPU0
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
Table 54. Fan Connector Location & Detail
FAN_CPU2A
PWM_CPU0
Tach 7
J2J2
LED_Fan_Fault_CPU0A

Figure 29. Fans and Sensors Block Diagram

Intel order number E53971-008
Intel® Server Board S5500WB TPS
Memory 2
FAN_MEM2
PWM_MEM0
Tach 4
J2J1
LED_Fan_Fault_MEM0
FAN_MEM2R
PWM_MEM0
Tach 4 & 8
J1D5
LED_Fan_Fault_MEM0R
Revision 1.9