Dmi2/Pci Express Link States; Intel Quickpath Interconnect States; G, S, And C State Combinations; G, S And C State Combinations - Intel Xeon Processor E5-1600 Datasheet

Power Management
Table 4-4. System Memory Power States (Sheet 2 of 2)
Self-Refresh
4.1.4

DMI2/PCI Express Link States

Table 4-5. DMI2/PCI Express* Link States
L0
L1
Note: L1 is only supported when the DMI2/PCI Express* port is operating as a PCI Express* port.
4.1.5

Intel QuickPath Interconnect States

Table 4-6.

Intel QPI States

L0
L0p
L1
4.1.6

G, S, and C State Combinations

Table 4-7.

G, S and C State Combinations

Global (G)
State
G0
G0
G0
G0
G1
G1
G2
G3
Intel® Xeon® Processor E5-1600/E5-2600/E5-4600 Product Families
Datasheet Volume One
State
CKE de-asserted. In this mode, no transactions are executed and the system
memory consumes the minimum possible power. Self refresh modes apply to
all memory channels for the processor.
• IO-MDLL Off: Option that sets the IO master DLL off when self refresh
occurs.
• PLL Off: Option that sets the PLL off when self refresh occurs.
In addition, the register component found on registered DIMMs (RDIMMs) is
complemented with the following power down states:
— Clock Stopped Power Down with IBT-On
— Clock Stopped Power Down with IBT-Off
State
Full on – Active transfer state.
Lowest Active State Power Management (ASPM) - Longer exit latency.
State
Link on. This is the power on active working state,
A lower power state from L0 that reduces the link from full width to half width
A low power state with longer latency and lower power than L0s and is
activated in conjunction with package C-states below C0.
Processor
Sleep
Core
(S) State
(C) State
S0 C0
S0 C1/C1E
S0 C3
S0 C6/C7
S3 Power off
S4 Power off
S5 Power off
N/A Power off
Description
Description
Description
Processor System
State Clocks
Full On On
Auto-Halt On
Deep Sleep On
Deep Power On
Down
Off, except RTC
Off, except RTC
Off, except RTC
Power off
Description
Full On
Auto-Halt
Deep Sleep
Deep Power Down
Suspend to RAM
Suspend to Disk
Soft Off
Hard off
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