Intel Xeon® Processor X3430 (8M Cache, 2.40 GHz) BX80605X3430 User Manual
Product codes
BX80605X3430
Intel® Xeon® Processor 3400 Series Datasheet, Volume 2
265
Processor Uncore Configuration Registers
4.13
Memory Thermal Control
4.13.1
MC_THERMAL_CONTROL0
MC_THERMAL_CONTROL1
Controls for the Integrated Memory Controller thermal throttle logic.
4.13.2
MC_THERMAL_STATUS0
MC_THERMAL_STATUS1
Status registers for the thermal throttling logic.
Device:
4, 5
Function: 3
Offset:
48h
Access as a DWord
Bit
Attr
Default
Description
31:3
RO
0
Reserved
2
RW
1
APPLY_SAFE
Enable the application of safe values while
Enable the application of safe values while
MC_THERMAL_PARAMS_B.SAFE_INTERVAL is exceeded.
1:0
RW
0
THROTTLE_MODE
Selects throttling mode.
0 = Throttle disabled
1 = Open Loop: Throttle when Virtual Temperature is greater than
Selects throttling mode.
0 = Throttle disabled
1 = Open Loop: Throttle when Virtual Temperature is greater than
MC_THROTTLE_OFFSET.
2 = Closed Loop: Throttle when MC_CLOSED_LOOP.THROTTLE_NOW is set.
3 = Closed Loop: Throttle when MC_DDR_THERM_COMMAND.THROTTLE is
3 = Closed Loop: Throttle when MC_DDR_THERM_COMMAND.THROTTLE is
set and the PM_EXT_TS# pin is asserted OR OLTT will be implemented
(Condition 1).
Device:
4, 5
Function: 3
Offset:
4Ch
Access as a DWord
Bit
Attr
Default
Description
31:30
RO
0
Reserved
29:4
RO
0
CYCLES_THROTTLED
The number of throttle cycles triggered in all ranks since last temperature
The number of throttle cycles triggered in all ranks since last temperature
sample.
3:0
RO
0
RANK_TEMP
The bit specifies whether the rank is above throttling threshold.
The bit specifies whether the rank is above throttling threshold.