Intel Xeon X3470 BX80605X3470 User Manual

Product codes

BX80605X3470

Intel® Xeon® Processor 3400 Series Datasheet, Volume 1

3.1.3

Intel

VT-d Objectives ............................................................................30

3.1.4

Intel

VT-d Features...............................................................................30

3.1.5

Intel

VT-d Features Not Supported..........................................................31

3.2

Intel

Trusted Execution Technology (Intel

TXT) .................................................31

3.3

Intel

Hyper-Threading Technology .....................................................................32

3.4

Intel

Turbo Boost Technology ............................................................................32

Power Management .................................................................................................33
4.1

ACPI States Supported .......................................................................................33
4.1.1

System States........................................................................................33

4.1.2

Processor Core/Package Idle States...........................................................33

4.1.3

Integrated Memory Controller States .........................................................33

4.1.4

PCI Express* Link States .........................................................................34

4.1.5

Interface State Combinations ...................................................................34

4.2

Processor Core Power Management ......................................................................34
4.2.1

Enhanced Intel

SpeedStep

Technology ..................................................35

4.2.2

Low-Power Idle States.............................................................................35

4.2.3

Requesting Low-Power Idle States ............................................................37

4.2.4

Core C-states .........................................................................................37
4.2.4.1

Core C0 State ...........................................................................38

4.2.4.2

Core C1/C1E State ....................................................................38

4.2.4.3

Core C3 State ...........................................................................38

4.2.4.4

Core C6 State ...........................................................................38

4.2.4.5

C-State Auto-Demotion ..............................................................38

4.2.5

Package C-States ...................................................................................39
4.2.5.1

Package C0 ..............................................................................40

4.2.5.2

Package C1/C1E........................................................................40

4.2.5.3

Package C3 State ......................................................................41

4.2.5.4

Package C6 State ......................................................................41

4.3

IMC Power Management .....................................................................................41
4.3.1

Disabling Unused System Memory Outputs.................................................41

4.3.2

DRAM Power Management and Initialization ...............................................42
4.3.2.1

Initialization Role of CKE ............................................................42

4.3.2.2

Conditional Self-Refresh .............................................................42

4.3.2.3

Dynamic Power Down Operation..................................................42

4.3.2.4

DRAM I/O Power Management ....................................................43

4.4

PCI Express* Power Management ........................................................................43

Thermal Management ..............................................................................................45

Signal Description....................................................................................................47
6.1

System Memory Interface ...................................................................................48

6.2

Memory Reference and Compensation ..................................................................50

6.3

Reset and Miscellaneous Signals ..........................................................................50

6.4

PCI Express* Based Interface Signals ...................................................................51

6.5

DMI — Processor to PCH Serial Interface...............................................................52

6.6

PLL Signals .......................................................................................................52

6.7

Intel

Flexible Display Interface Signals ...............................................................52

6.8

JTAG/ITP Signals ...............................................................................................53

6.9

Error and Thermal Protection...............................................................................54