82G33 datasheet(377/437 Pages) INTEL

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Electrical Characteristics

Datasheet

377

Table 11-3 shows the maximum power consumption for the MCH in the ACPI S3, S4,

and S5 states with Intel® Active Management Technology support. Platforms that

utilize Intel Active Management Technology will keep DRAM memory powered in S4

and S5. Current consumption used by the MCH will vary between the “Idle” case and

the “Max” case, depending on activity on the Intel® Management Engine. For the

majority of the time, the Intel Management Engine will be in the “Idle” state. In

addition, Max values are measured with fast silicon at 96° C Tcase temperature, at the

Max voltage listed in the following table. The Max values are measured with a

synthetic tool that forces maximum allowable bandwidth on the DRAM interface. It is

unknown if commercial SW management applications will be able to generate this

level of power consumption.

Table 11-3. Current Consumption in S3, S4, S5 with Intel® Active Management

Technology Operation (82Q35 GMCH Only)

Symbol

Parameter

Signal Names

Idle

Max

Unit

Notes

IMCH_CL

1.25 V Supply Current for

MCH with Intel AMT

VCC_CL, VCCA_MPLL,

VCCA_HPLL

625

1501

1,2

IDDR2_PLATFORM

DDR2 System Memory

Interface (1.8 V) Supply

Current in Standby States

with Intel AMT

VCC_DDR,

VCC_CKDDR

143

431

1,2

IDDR3_PLATFORM

DDR3 System Memory

Interface (1.5 V) Supply

Current in Standby States

with Intel AMT

VCC_DDR,

VCC_CKDDR

143

431

1,2

NOTES:

Estimate is only for max current coming through chipset’s supply pins, and is the ICC for the MCH only.

Icc max values are determined on a per-interface basis. Max currents cannot occur

simultaneously on all interfaces.

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