Hardware Specification
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ACPI Power Management States
The Vector supports the ACPI specification. Unlike previous power standards that were BIOS-based,
ACPI allows OS-directed power management. It specifies an industry-standard interface for both
hardware and software that facilitates power and thermal management. This section describes how
the Vector makes use of the ACPI low power modes.
The ACPI specification defines the low power states for ACPI-compliant systems. The following table
describes the states supported by the Vector.
State
Mode
Description
S0
Full Operation
All devices are operational with dynamic power management functions active.
S3
Standby or Sleep Most devices are powered down. DRAM is retained using low-power self-
refresh. Wake events are active and enable a transition back to full operation.
S4
Hibernation
All devices are powered down. Operating system context is saved to disk
storage prior to powering down system voltage rails. Limited wake events are
active. Resume to full operation is dependent on numerous system
components including the disk storage device.
S5
Power down
All devices are powered down. The embedded controller is active but may be
in low-power mode. No operating system context is preserved. Limited wake
events are active.
Table 7. Low Power States
The Vector can be "awakened" and returned to full operation by initiating a system wakeup. The
following are some of the methods that can wake the system. The actual method implemented
depends on your application.
•
Sleep/Wake input (JP2 or J9 pin 3)
•
Keypad/GPIO
•
Ethernet
•
USB
Mechanical
The Vector conforms to the EPIC form factor. This section describes mounting and dimensions of the
board.
Mounting Holes
The Vector includes two sets of four mounting holes that enable the following mountings:
•
SATA disk drive to Vector
•
Vector to enclosure
The four mounting holes for the enclosure connect electrically to the ground plane using 0Ω resistors.
For reliable ground connections, use locking washers and make sure that washers do not extend
beyond the limits of the pads provided.
Per IPC-A-610D section 4.2.3, secure the board using a flat washer against the board with a split
washer on top between the flat washer and the screw head or nut. Do not use toothed star washers,
as they cut into the plating and laminations of the board over time and will not produce an attachment
that will withstand vibration and thermal cycling.
For applications in high shock and vibration environments, Eurotech recommends using all eight
mounting holes to secure the Vector to an enclosure.
