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Intel N2820 FH8065301616603 Data Sheet

Product codes
FH8065301616603
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Power Management
62
Datasheet
6.2.1.3
S4 – Suspend to Disk (Hibernate)
S4 is a suspend state in which most power planes of the processor are turned off, 
except for the suspend and RTC well. In this ACPI state, system context is saved to the 
hard disk.
Key features:
•
No activity is allowed.
•
All power wells are disabled, except for the suspend and RTC well.
6.2.1.4
S5 – Soft Off
From a hardware perspective, the S5 state is identical to the S4 state. The difference is 
purely software; software does not write system context to hard disk when entering 
S5.
The following table shows the differences in the sleeping states with regards to the 
processor’s output signals.
NOTES:The processor treats S4 and S5 requests the same. The processor does not have PMC_SLP_S5#. 
PMC_SUS_STAT# is required to drive low (asserted) even if core well is left on because 
PMC_SUS_STAT# also warns of upcoming reset. 
NOTES:The processor treats S4 and S5 requests the same. The processor does not have PMC_SLP_S5#. 
PMC_SUS_STAT# is required to drive low (asserted) even if core well is left on because 
PMC_SUS_STAT# also warns of upcoming reset. 
6.2.2
System States
Table 40. Processor Sx-States to SLP_S*#
State
S0
S3
S4
S5
Reset w/o Power 
Cycle
Reset w/ Power 
Cycle
CPU Executing
In C0
OFF
OFF
OFF
No
OFF
PMC_SLP_S3#
HIGH
LOW
LOW
LOW
HIGH
LOW
PMC_SLP_S4#
HIGH
HIGH
LOW
LOW
HIGH
LOW
S0 Power Rails
ON
OFF
OFF
OFF
ON
OFF
PMC_PLTRST#
HIGH
LOW
LOW
LOW
LOW
LOW
PMC_SUS_STAT#
HIGH
LOW
LOW
LOW
HIGH
LOW
PCIe Links
L0, L1
L3
L3
L3
L3 Ready
L3
Table 41. General Power States for System (Sheet 1 of 2)
States/Sub-states
Legacy Name / Description
G0/S0/C0
FULL ON: CPU operating. Individual devices may be shut down to save power. The 
different CPU operating levels are defined by Cx states.
G0/S0/Cx
Cx State: CPU manages C-state itself.
G0/S3
S3 State: Low power platform active state. All DRAM and IOSF traffic are halted. PLL 
are configured to be off.