Intel X3360 AT80569KJ073N Data Sheet

Datasheet

85

that fall under the specification, the PECI will always respond to requests and the 

protocol itself can be relied upon to detect any transmission failures. There are, 

however, certain scenarios where the PECI is know to be unresponsive.

Prior to a power on RESET# and during RESET# assertion, PECI is not guaranteed to 

provide reliable thermal data. System designs should implement a default power-on 

condition that ensures proper processor operation during the time frame when reliable 

data is not available via PECI.

To protect platforms from potential operational or safety issues due to an abnormal 

condition on PECI, the Host controller should take action to protect the system from 

possible damage. It is recommended that the PECI host controller take appropriate 

action to protect the client processor device if valid temperature readings have not 

been obtained in response to three consecutive GetTemp()s or for a one second time 

interval. The host controller may also implement an alert to software in the event of a 

critical or continuous fault condition. 

The error codes supported for the processor GetTemp() command are listed in 

§

0x8000

General sensor error

0x8002

Sensor is operational, but has detected a temperature below its operational 
range (underflow)