Specification Sheet

MCHBAR Registers
252 Datasheet, Volume 2 of 2
§ §
Bit
Range
Default &
Access
Field Name (ID): Description
31:12
0h
RO
Reserved (RSVD): Reserved.
11
0h
RW0C
THRESHOLD2_LOG: Sticky log bit that asserts on a 0 to 1 transition of the
THRESHOLD2_STATUS bit. HW controls this transition.
10
0h
ROV
THRESHOLD2_STATUS: Status bit indicating that the hottest DIMM has crossed the
THRESHOLD2 value programmed in bits 20:13 of DDR_THERM_DPPM_INTERRUPT.
9
0h
RW0C
THRESHOLD1_LOG: Sticky log bit that asserts on a 0 to 1 transition of the
THRESHOLD1_STATUS bit. HW controls this transition.
8
0h
ROV
THRESHOLD1_STATUS: Status bit indicating that the hottest DIMM has crossed the
THRESHOLD1 value programmed in bits 11:4 of DDR_THERM_DPPM_INTERRUPT.
7
0h
RW0C
OOS_TEMP_LOG: Sticky log bit that asserts on a 0 to 1 transition of the
OOS_TEMP_STATUS bit. HW controls this transition.
6
0h
ROV
OOS_TEMP_STATUS: Status bit indicating that MR4 is currently indicating at least
one DRAM with high temperature which is beyond the operating range. This can only
occur currently when MAD_CHNL.LPDDR=1 and
DDR_PTM_CTL.DISABLE_DRAM_TS=0.
5
0h
RW0C
REFRESH2X_LOG: Sticky log bit that asserts on a 0 to 1 transition of the
REFRESH2X_STATUS bit. HW controls this
transition.
4
0h
ROV
REFRESH2X_STATUS: Status bit indicating that the DIMM refresh rate has crossed
the boundary (in either direction) between 1x or lower refresh rate, and higher than
1x refresh rate. The name is misleading for LPDDR where we may go above 2x refresh
rate.
3
0h
RW0C
HOT_THRESHOLD_LOG: Sticky log bit that asserts on a 0 to 1 transition of the
HOT_THRESHOLD_STATUS bit. HW controls
this transition.
2
0h
ROV
HOT_THRESHOLD_STATUS: Status bit indicating that the DDR temperature is
higher than or equal to the DDR Hot threshold defined in
DDR_THERM_THRESHOLDS_CONFIG.
1
0h
RW0C
WARM_THRESHOLD_LOG: Sticky log bit that asserts on a 0 to 1 transition of the
WARM_THRESHOLD_STATUS bit. HW controls this transition.
0
0h
ROV
WARM_THRESHOLD_STATUS: Status bit indicating that the DDR temperature is
higher than or equal to the DDR Warm threshold defined in
DDR_THERM_THRESHOLDS_CONFIG.