Datasheet

Processor Uncore Configuration Registers
412 Datasheet, Volume 2
4.2.13.11 ET_DIMM_AVG_SUM_[0:2]—Electrical Throttling Energy 
Accumulator Register
4.2.13.12 ET_DIMM_TH_[0:2]—Electrical Throttling Energy 
Threshold Register
ET_DIMM_AVG_SUM_[0:2]
Bus: 1 Device: 16 Function: 0 Offset: 170h, 174h, 178h
Bus: 1 Device: 16 Function: 1 Offset: 170h, 174h, 178h
Bus: 1 Device: 16 Function: 4 Offset: 170h, 174h, 178h
Bus: 1 Device: 16 Function: 5 Offset: 170h, 174h, 178h
Bit Attr
Reset
Value
Description
31:16 RW-V 0000h
ET_DIMM_AVG
DIMM Average EnergyAvg(i) = Sum(i)/ET_DIV+Avg(i-1)-Avg(i-1)/ET_DIV
15:0 RW-V 0000h
ET_DIMM_SUM: DIMM Energy Current Sum Counter
When the ET_SAMPLE_PERIOD counter is counting to zero, the current sum (that
is, sum(i)) is used in the above Avg(i) calculation. The ET_DIMM_SUM is reset in
the next DCLK. This counter is sized to be sufficient for all scenarios and should
not overlap within valid ET_SAMPLE_PERIOD range.
ET_DIMM_TH_[0:2]
Bus: 1 Device: 16 Function: 0 Offset: 180h, 184h, 188h
Bus: 1 Device: 16 Function: 1 Offset: 180h, 184h, 188h
Bus: 1 Device: 16 Function: 4 Offset: 180h, 184h, 188h
Bus: 1 Device: 16 Function: 5 Offset: 180h, 184h, 188h
Bit Attr
Reset
Value
Description
31:16 RW FFFFh
ET_DIMM_HI_TH
Assert electrical throttling when ET_DIMM_AVG is greater than ET_DIMM_HI_TH.
Note: Pcode may dynamically change and restore the programmed threshold.
Updating the threshold should take effect in the next DCLK.
15:0 RW FFFFh
ET_DIMM_LO_TH
Deassert electrical throttling when ET_DIMM_AVG is less than or equal to
ET_DIMM_LO_TH.
Note: Pcode may dynamically change and restore the programmed threshold.
Updating the threshold should take effect in the next DCLK.