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

All Processor Series

PECI

Platform Environment Control Interface: A serial sideband interface to the processor. It is used primarily for thermal, power, and error management.

I/O

PECI, Async

SE

All Processor Series

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

All Processor Series

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 operating temperature exceeds approximately 125 °C. This is signaled to the system by the THERMTRIP# pin.

O

OD

SE

All Processor Series