Intel BB5520UR Product Specification - Page 73

ACPI Support

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Intel® Server Boards S5520HC, S5500HCV, and S5520HCT TPS Functional Architecture Figure 25. BIOS setting for TXT 6. Press "F10" to save and exit, now Intel® TXT is successfully enabled. 3.14 ACPI Support The Intel® Server Boards S5520HC, S5500HCV and S5520HCT support S0, S1, and S5 states. S1 is considered a sleep state. The Intel® Server Boards S5520HC, S5500HCV and S5520HCT can wake up from S1 state using the USB devices in addition to the sources described in the following paragraph. The wake-up sources are enabled by the ACPI operating systems with cooperation from the drivers; the BIOS have no direct control over the wake-up sources when an ACPI operating system is loaded. The role of the BIOS is limited to describing the wake-up sources to the operating system. The S5 state is equivalent to the operating system shutdown. No system context is saved when going into S5. Revision 1.8 59 Intel order number E39529-013

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Intel® Server Boards S5520HC, S5500HCV, and S5520HCT TPS
Functional Architecture
Revision 1.8
Intel order number E39529-013
59
Figure 25. BIOS setting for TXT
6. Press “F10” to save and exit, now Intel
®
TXT is successfully enabled.
3.14
ACPI Support
The Intel
®
Server Boards S5520HC, S5500HCV and S5520HCT support S0, S1, and S5 states.
S1 is considered a sleep state.
The Intel
®
Server Boards S5520HC, S5500HCV and S5520HCT can wake up from S1 state
using the USB devices in addition to the sources described in the following paragraph.
The wake-up sources are enabled by the ACPI operating systems with cooperation from the
drivers; the BIOS have no direct control over the wake-up sources when an ACPI operating
system is loaded. The role of the BIOS is limited to describing the wake-up sources to the
operating system.
The S5 state is equivalent to the operating system shutdown. No system context is saved when
going into S5.