Intel i5-2510E FF8062700853304 User Manual

Datasheet

59

A small amount of hysteresis has been included to prevent an excessive amount of 

operating point transitions when the processor temperature is near its maximum 

operating temperature. Once the temperature has dropped below the maximum 

operating temperature and the hysteresis timer has expired, the operating frequency 

and voltage transition back to the normal system operating point. This is illustrated in 

.

Once a target frequency/bus ratio is resolved, the processor core will transition to the 

new target automatically.

• On an upward operating point transition, the voltage transition precedes the 

frequency transition.

• On a downward transition, the frequency transition precedes the voltage transition.

When transitioning to a target core operating voltage, a new VID code to the voltage 

regulator is issued. The voltage regulator must support dynamic VID steps to support 

this method.

During the voltage change:

• It will be necessary to transition through multiple VID steps to reach the target 

operating voltage.

• Each step is 12.5 mV for compliant VRs.
• The processor continues to execute instructions. However, the processor will halt 

instruction execution for frequency transitions.