S&T Kontron Mini ITX Skylake S/C236, Руководство пользователя

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mITX-SKL-S-C236 Doc. Rev. 1.6
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7.3. Power Management
Processor supports ACPI 4.0a C0, C1, C1E, C3, C6, C7, C8, C9, C10 states. All power management handshakes are made
on the DMI interface. None of the ‘Power State’ status signals can be observed on the board directly.
Table 30: Power States
State Description
G0/S0/C0 Full On: Processor operating. Individual devices may be shut down or be placed into
lower power states to save power.
G0/S0/Cx Cx State: Cx states are processor power states within the S0 system state that
provide for various levels of power savings. The processor initiates C-state entry
and exit while interacting with the PCH. The PCH will base its behavior on the
processor state.
G1/S3
Suspend-To-RAM (STR): The system context is maintained in system DRAM, but
power is shut off to non-critical circuits. Memory is retained and refreshes
continued. All external clocks stop except RTC.
G1/S4 Suspend-To-Disk (STD): The context of the system is maintained on the disk. All
power is then shut off to the system except for the logic required to resume.
G2/S5 Soft Off (SOFF): System context is not maintained. All power is shut off except for
the logic required to restart. A full boot is required when waking.
G3 Mechanical OFF (MOFF): System context not maintained. All power is shut off
except for the RTC. No Wake
events are possible. This state occurs if the user
removes the main system batteries in a mobile system, turns off a mechanical
switch, or if the system power supply is at a level that is insufficient to power the
waking
logic.
7.4. Real-Time Clock
An on-board battery maintains power to the Real Time Clock (RTC) when the board is in a mechanical off state. A
CR2032 battery is installed on the board.
7.5. Trusted Platform Module (TPM)
The boards include one Infineon SLB9665TT2.0FW5.00 Trusted Platform Module (TPM). The Trusted Platform
Module (TPM) is a specific protected and encapsulated microcontroller security chip. He is used to defend the
internal data structures against attacks. The nature of this security chip ensures that informations like keys,
password and digital certificates are stored within.