12th Generation Intel® Core™ Processors

Datasheet, Volume 1 of 2

ID 655258
Date 08/08/2022
Document Table of Contents

Error and Thermal Protection Signals

Error and Thermal Protection Signals

Signal Name

Description

Dir.

Buffer Type

Link

Type

Availability

CATERR#

Catastrophic Error: This signal indicates that the system has experienced a catastrophic error and cannot continue to operate. The processor will set this signal for non-recoverable machine check errors or other unrecoverable internal errors. CATERR# is used for signaling the following types of errors: Legacy MCERRs, CATERR# is asserted for 16 BCLKs. Legacy IERRs, CATERR# remains asserted until warm or cold reset.

O

OD

SE

S Processor Line

P Processor Line

H Processor Line

U Processor Line

PECI

Platform Environment Control Interface: A serial sideband interface to the processor. It is used primarily for thermal, power, and error management. Details regarding the PECI electrical specifications, protocols and functions can be found in the RS-Platform Environment Control Interface (PECI) Specification, Revision 3.0.

I/O

PECI, Async

SE

S Processor Line

P Processor Line

H Processor Line

U Processor Line

PROCHOT#

Processor Hot: PROCHOT# goes active when the processor temperature monitoring sensor(s) detects that the processor has reached its maximum safe operating temperature. This indicates that the processor Thermal Control Circuit (TCC) has been activated, if enabled. This signal can also be driven to the processor to activate the TCC.

I/O

I:GTL/ O:OD

SE

S Processor Line

P Processor Line

H Processor Line

U Processor Line

THERMTRIP#

Thermal Trip: The processor protects itself from catastrophic overheating by use of an internal thermal sensor. This sensor is set well above the normal operating temperature to ensure that there are no false trips. The processor will stop all executions when the junction temperature exceeds approximately 130 °C. This is signaled to the system by the THRMTRIP# pin.

O

OD

SE

S Processor Line

P Processor Line

H Processor Line

U Processor Line