Mem_Trml_Thresholds_Config-Memory Thermal Thresholds Configuration Register - Intel 2ND GENERATION CORE PROCESSOR FAMILY DESKTOP - DATASHEET VOLUME 2 01-2011 Datasheet

2.19.2 MEM_TRML_THRESHOLDS_CONFIG—Memory Thermal
Thresholds Configuration Register
This register describes the thresholds for the memory thermal management in the MC.
• The warm threshold defines when self-refresh is at double rate. Throttling can also
be applied at this threshold based on the configuration in the MC.
• The hot threshold defines what the acceptable limit of the temperature is. When
this threshold is crossed, severe throttling takes place. The self refresh is also at
double rate.
• The critical threshold continues to throttle a the hot threshold value while also
generating an additional interrupt for other platform thermal management
Cold Temperature:
Warm Temperature:
Hot Temperature:
Critical Temperature:
This register is read by PCODE only during Reset Phase 4.
NOTE: The threshold values must be programmed such that:
WARM_TH < HOT_TH < CRITICAL_TH
B/D/F/Type:
Address Offset:
Reset Value:
Access:
Size:
BIOS Optimal Default
Bit
31:16
15
14:8
7
6:0
252
TEMP < WARM_TH
TEMP  WARM_TH & TEMP < HOT_TH
TEMP  HOT_TH & TEMP < CRITICAL_TH
TEMP  CRITICAL_TH
0/0/0/MCHBAR PCU
5888–588Bh
00E4D5D0h
RW
32 bits
002AD0h
Reset RST/
Attr
Value PWR
RO 0h
RW 1b Uncore
RW 1010101b Uncore
RW 1b Uncore
RW 1010000b Uncore
Processor Configuration Registers
Description
Reserved
Hot Threshold Enable (HOT_THRESHOLD_ENABLE)
This bit must be set to allow the hot threshold.
Hot Threshold (HOT_THRESHOLD)
This threshold defines what is the acceptable temperature
limitation. When this threshold is crossed, severe throttling takes
place. The self refresh is also at double rate.
Warm Threshold Enable (WARM_THRESHOLD_ENABLE)
This bit must be set to allow the warm threshold.
Warm Threshold (WARM_THRESHOLD)
The warm temperature threshold defines when the self refresh is at
double rate. Throttling can also be applied at this threshold based
on the configuration in the MC.
Datasheet, Volume 2