Acpi Suspend Modes And Resume Events; Low Voltage Memory (Ddr3L) - Congatec COM Express conga-TC87 User Manual

8.3

ACPI Suspend Modes and Resume Events

conga-TC87 supports S3 (STR= Suspend to RAM). For more information about S3 wake events, see section 11.4.6 "ACPI Configuration
Submenu".
S4 (Suspend to Disk) is not supported by the BIOS (S4_BIOS) but it is supported by the following operating systems (S4_OS= Hibernate):
• Windows 8, Windows 7, Windows Vista, Linux.
This table lists the "Wake Events" that resume the system from S3 unless otherwise stated in the "Conditions/Remarks" column:
Wake Event
Power Button
Onboard LAN Event
SMBALERT#
PCI Express WAKE#
PME#
USB Mouse/Keyboard Event
RTC Alarm
Watchdog Power Button Event Wakes unconditionally from S3-S5.
8.4

Low Voltage Memory (DDR3L)

The Haswell ULT processor featured on the conga-TC87 supports low voltage system memory interface. The memory interface I/O voltage
is 1.35V and supports non-ECC, unbuffered DDR3L SO-DIMMs. With this low voltage system memory interface on the processor, the conga-
TC87 offers a system optimized for lowest possible power consumption. The reduction in power consumption due to lower voltage subsequently
reduces the heat generated.
Caution
The usage of DDR3@1.5V SO-DIMM modules may affect the stability or boot-up of the conga-TC87. Therefore use only non-ECC, unbuffered
DDR3L SO-DIMM memory modules up to 1600 MT/s on the conga-TC87.
Copyright © 2013 congatec AG
Conditions/Remarks
Wakes unconditionally from S3-S5.
Device driver must be configured for Wake On LAN support.
Wakes unconditionally from S3-S5.
Wakes unconditionally from S3-S5.
Activate the wake up capabilities of a PCI device using Windows Device Manager configuration options for this device OR set Resume On
PME# to Enabled in the Power setup menu.
When Standby mode is set to S3, USB hardware must be powered by standby power source.
Set USB Device Wakeup from S3/S4 to ENABLED in the ACPI setup menu (if setup node is available in BIOS setup program).
In Device Manager look for the keyboard/mouse devices. Go to the Power Management tab and check 'Allow this device to bring the computer
out of standby'.
Activate and configure Resume On RTC Alarm in the Power setup menu. Only available in S5.
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