Tcontrol Definition; Tcontrol Value And Digital Thermal Sensor Value Interaction - Intel 5100 Series Instruction Manual

2.2.6 T
CONTROL
T
CONTROL
processor T
the Digital Thermal Sensor are relative and no longer absolute, the T
now defined as a relative value to the TCC activation set point (that is, 0°C).
depicts the interaction between the T
Figure 2-6. T
CONTROL
Digital Thermal Sensor Digital Thermal Sensor
Tcontrol = -5 Tcontrol = -5
The value for T
individually. For the Dual-Core Intel Xeon Processor 5100 Series, the T
obtained by reading a processor model specific register (MSR). NOTE: There is no
T
CONTROL_BASE
control device only needs to read the T
from the PECI interface. The equation for calculating T
Equation 2-2.T
CONTROL
Where:
T
OFFSET
manufacturing that can be obtained by reading the IA32_TEMPERATURE_TARGET
MSR. This is a static and a unique value. Refer to the RS - Conroe and Woodcrest
Processor Family BIOS Writer's Guide for further details.
Figure 2-7
22
Definition
can be described as a trigger point for fan speed control implementation. The
value is now a DTS value. Because the temperatures provided by
CONTROL
Value and Digital Thermal Sensor Value Interaction
0 0 0
-10 -10 -10
-20 -20 -20
-30 -30 -30
-40 -40 -40
is calibrated in manufacturing and configured for each processor
CONTROL
value to sum as previously required on legacy processors. The fan speed
= -T
OFFSET
= A DTS-based value programmed into each processor during
depicts the interaction between the Thermal Profile and T
Dual-Core Intel® Xeon® Processor 5100 Series Thermal/Mechanical Design Guide
Thermal/Mechanical Reference Design
value and Digital Thermal Sensor value.
CONTROL
Temperature Temperature
Temperature Temperature
Time Time
MSR and compare this to the DTS value
OFFSET
CONTROL
value is
CONTROL
Figure 2-6
value is
CONTROL
is:
.
CONTROL