Техническая Спецификация для Intel 4 519K HH80547PE0831MN

69

Regardless of whether or not the Thermal Monitor feature is enabled, in the event of a catastrophic 
cooling failure, the processor will automatically shut down when the silicon has reached an 
elevated temperature (refer to the THERMTRIP# definition in 

). At this point, the FSB 

signal THERMTRIP# will go active and stay active as described in 

. THERMTRIP# 

activation is independent of processor activity and does not generate any bus cycles. If 
THERMTRIP# is asserted, processor core voltage (V

CC

) must be removed.

T

control

 is a temperature specification based on a temperature reading from the thermal diode. The 

value for T

control

 will be calibrated in manufacturing and configured for each processor. The 

T

control

 temperature for a given processor can be obtained by reading the 

IA32_TEMPERATURE_TARGET MSR in the processor. The T

control

 value that is read from the 

IA32_TEMPERATURE_TARGET MSR needs to be converted from Hexadecimal to Decimal and 
added to a base value of 50 °C.

The value of T

control

 may vary from 00h to 1Eh (0 to 30 °C).

When T

diode

 is above T

control

, then T

c

 must be at or below T

c(max)

 as defined by the thermal profile 

in 

; otherwise, the processor temperature can be maintained at T

control

 (or 

lower) as measured by the thermal diode.

The purpose of this feature is to support acoustic optimization through fan speed control.

The processor incorporates an on-die thermal diode. A thermal sensor located on the system board 
may monitor the die temperature of the processor for thermal management/long term die 
temperature change purposes. 

 provide the diode parameter and interface 

specifications. This thermal diode is separate from the Thermal Monitor’s thermal sensor and 
cannot be used to predict the behavior of the Thermal Monitor.