Intel 2760QM FF8062701065300 User Manual
Product codes
FF8062701065300
Power Management
28
Datasheet, Volume 1
Table 4-3
lists the processor core C-states support.
Notes:
1.
1.
Package C7 is not supported.
2.
All package states are defined to be "E" states – such that they always exit back into the LFM point upon
execution resume.
execution resume.
3.
The mapping of actions for PC3, and PC6 are suggestions – microcode will dynamically determine which
actions should be taken based on the desired exit latency parameters.
actions should be taken based on the desired exit latency parameters.
4.
CC3/CC6 will all use a voltage below the VccMin operational point. The exact voltage selected will be a
function of the snoop and interrupt response time requirements made by the devices (PCIe* and DMI) and
the operating system.
function of the snoop and interrupt response time requirements made by the devices (PCIe* and DMI) and
the operating system.
Table 4-2.
Package C-State Support
Package C-State
Core
States
Limiting Factors
Retention and
PLL-Off
LLC
Fully
Flushed
Notes
1
PC0 – Active
CC0
N/A
No
No
2
PC2 – Snoopable
Idle
Idle
CC3–CC7
•
PCIe/PCH and Remote Socket
Snoops
Snoops
•
PCIe/PCH and Remote Socket
Accesses
Accesses
•
Interrupt response time
requirement
requirement
•
DMI Sidebands
•
Configuration Constraints
VccMin
Freq = MinFreq
PLL = ON
No
2
PC3 – Light
Retention
Retention
at least
one Core
in C3
•
Core C-state
•
Snoop Response Time
•
Interrupt Response Time
•
Non Snoop Response Time
Vcc = retention
PLL = OFF
No
2,3,4
PC6 – Deeper
Retention
Retention
CC6–CC7
•
LLC ways open
•
Snoop Response Time
•
Non Snoop Response Time
•
Interrupt Response Time
Vcc = retention
PLL = OFF
No
2,3,4
Table 4-3.
Core C-State Support
Core C-State
Global Clock
PLL
L1/L2 Cache
Core VCC
Context
CC0
Running
On
Coherent
Active
Maintained
CC1
Stopped
On
Coherent
Active
Maintained
CC1E
Stopped
On
Coherent
Request LFM
Maintained
CC3
Stopped
On
Flushed to LLC
Request Retention
Maintained
CC6
Stopped
On
Flushed to LLC
Power Gate
Flushed to LLC
CC7
Stopped
Off
Flushed to LLC
Power Gate
Flushed to LLC