Intel BX80646E31230V3, BX80646E31240V3 6.9Error and Thermal Protection Signals

Signal Description—Processor

Signal Name	Description	Direction / Buffer
		Type
	Test Data Out: This signal transfers serial test data out	O
TDO	of the processor. This signal provides the serial output
		Open Drain
	needed for JTAG specification support.
TMS	Test Mode Select: This is a JTAG specification	I
	supported signal used by debug tools.	GTL
	Test Reset: This signal resets the Test Access Port	I
TRST#	(TAP) logic. This signal must be driven low during power
		GTL
	on Reset.

6.9Error and Thermal Protection Signals

Table 32.	Error and Thermal Protection Signals
	Signal Name	Description	Direction / Buffer
			Type
		Catastrophic Error: This signal indicates that the system has
		experienced a catastrophic error and cannot continue to
		operate. The processor will set this for non-recoverable	O
	CATERR#	machine check errors or other unrecoverable internal errors.
			GTL
		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.
		Platform Environment Control Interface: A serial	I/O
	PECI	sideband interface to the processor, it is used primarily for	Asynchronous
		thermal, power, and error management.
		Processor Hot: PROCHOT# goes active when the processor	GTL Input
		temperature monitoring sensor(s) detects that the processor	Open-Drain Output
	PROCHOT#	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.
		Thermal Trip: The processor protects itself from catastrophic	O
		overheating by use of an internal thermal sensor. This sensor	Asynchronous OD
	THERMTRIP#	is set well above the normal operating temperature to ensure	Asynchronous CMOS
		that there are no false trips. The processor will stop all
		execution when the junction temperature exceeds
		approximately 130 °C. This is signaled to the system by the
		THERMTRIP# pin.

	Intel® Xeon® Processor E3-1200 v3 Product Family
June 2013	Datasheet – Volume 1 of 2
Order No.: 328907-001	83