Table 4-15 Coordination Of Core Power States At The Package Level - Intel PENTIUM P6000 - DATASHEET 2010 Datasheet

Power Management
The processor exits a package C-state when a break event is detected. Depending on
the type of break event, the processor does the following:
•
If a core break event is received, the target core is activated and the break event
message is forwarded to the target core.
— If the break event is not masked, the target core enters the core C0 state and
the processor enters package C0.
— If the break event is masked, the processor attempts to re-enter its previous
package state.
•
If the break event was due to a memory access or snoop request.
— But the platform did not request to keep the processor in a higher package C-
state, the package returns to its previous C-state.
— And the platform requests a higher power C-state, the memory access or snoop
request is serviced and the package remains in the higher power C-state.
Table 4-15
summarizes package C-state transitions.
Table 4-15.Coordination of Core Power States at the Package Level
Package C-State
NOTE:
1. If enabled, the package C-state will be C1E if all actives cores have resolved a core C1
state or higher.
Datasheet
shows package C-state resolution for a dual-core processor.
C0
C0
C0
C0
C1
C0
C3
C0
C6
Core 1
C1 C3
C0 C0
1 1
C1 C1
1
C1 C3
1
C1 C3
Figure 4-11
Deep Power
Down
Technology
(code named
C6 state)
C0
1
C1
C3
C6
45