Intel 6 SERIES CHIPSET - DATASHEET 01-2011 Datasheet page 865

Thermal Sensor Registers (D31:F6)
22.2.21 ITV—Internal Temperature Values
Offset Address: TBARB+D8h
Default Value:
Bit
31:24
23:16
15:8
7:0
Datasheet
00000000h
Reserved
Sequence Number — RO. Provides a sequence number which can be used by the
host to detect if the ME FW has hung. The value will roll over to 00h from FFh. The
count is updated at approximately 200 ms. Host SW can check this value and if it is
not incriminated over a second or so, software should assume that the ME FW is hung.
NOTE: if the ME is reset, then this value will not change during the reset. After the
reset is done, which may take up to 30 seconds, the ME may be on again and
this value will start incrementing, indicating that the thermal values are valid
again.
These bits are data byte 9 provided to the external controller when it does a read over
SMLink1. Refer to Section 5.22.3 for more details
Reserved
PCH Temperature — RO. The bits contain PCH temperature data in absolute degrees
Celsius.
These bits are data byte 1 provided to the external controller when it does a read over
SMLink1. Refer to Section 5.22.3 for more details
Attribute: RO
Size: 32 bit
Description
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