Specification Sheet
Datasheet, Volume 2 of 2 251
MCHBAR Registers
7.90 Memory Thermal DPPM Status (DDR)—Offset
6204h
Status and log bits of memory thermal interrupt enabled through configuration of
DDR_THERM_THRESHOLDS_CONFIG.
Access Method
Default: 0h
7
0h
RW0C
THRESHOLD1_LOG: Sticky log bit that asserts on a 0 to 1 or 1 to 0 transition of the
Threshold1_Status bit. HW controls this transition.
6
0h
ROV
THRESHOLD1_STATUS: Indicates that the current temperature (bits 23:16 in this
register) is equal to or higher than the Threshold1 defined in the
IA32_PACKAGE_THERM_INTERRUPT MSR. Note that because temperature and
thresholds are defined as negative offsets, a higher number means a lower
temperature.
5
0h
RW0C
OUT_OF_SPEC_LOG: Sticky log bit indicating that the processor has operated out of
its thermal specification since the last time SW cleared this bit. Set by HW on a 0 to 1
transition of Out_of_Spec_Status.
4
0h
ROV
OUT_OF_SPEC_STATUS: Status bit indicating that the processor is operating out of
its thermal specification.
3
0h
RW0C
PROCHOT_LOG: Sticky log bit indicating that PROCHOT# has been asserted since the
last time SW cleared this bit. Set by HW on a 0 to 1 transition of Prochot_Status.
2
0h
ROV
PROCHOT_STATUS: Status bit indicating that PROCHOT# is currently being
asserted.
1
0h
RW0C
THERMAL_MONITOR_LOG: Sticky log bit indicating that the package has seen a
thermal monitor event since the last time SW cleared this bit. Set by HW on a 0 to 1
transition of Thermal_Monitor_Status.
0
0h
ROV
THERMAL_MONITOR_STATUS: Status bit indicating that any of the package
thermal monitors have tripped and the package is currently thermally throttling.DPPM
Bit
Range
Default &
Access
Field Name (ID): Description
Type: MEM
(Size: 32 bits)
Offset: [B:0, D:0, F:0] + 6204h
3
1
2
8
2
4
2
0
1
6
1
2
8
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
RSVD
THRESHOLD2_LOG
THRESHOLD2_STATUS
THRESHOLD1_LOG
THRESHOLD1_STATUS
OOS_TEMP_LOG
OOS_TEMP_STATUS
REFRESH2X_LOG
REFRESH2X_STATUS
HOT_THRESHOLD_LOG
HOT_THRESHOLD_STATUS
WARM_THRESHOLD_LOG
WARM_THRESHOLD_STATUS