Intel i5-2520M FF8062700840017 User Manual

Datasheet

77

TMS

TMS (Test Mode Select): A JTAG 
specification support signal used by debug 
tools.

I

CMOS

TRST#

TRST# (Test Reset) Boundary-Scan test 
reset pin

I

CMOS

TAPPWRGOOD

Power good for ITP

O

Asynchronous CMOS

CATERR#

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 machine check errors or other 
unrecoverable internal errors. External 
agents are allowed to assert this pin which 
will cause the processor to take a machine 
check exception.

I/O

GTL

PECI

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

I/O

Asynchronous

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

Asynchronous GTL

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 execution when the 
junction temperature exceeds approximately 
130°C. This is signaled to the system by the 
THERMTRIP# pin. 

O

Asynchronous GTL