Fan Headers; Lan Wake Capabilities; Instantly Available Pc Technology - Intel DB85FL Specification

Intel Desktop Board DB85FL Technical Product Specification
1.12.2.2

Fan Headers

The function/operation of the fan headers is as follows:
The fans are on when the board is in the S0 state
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The fans are off when the board is off or in the S3, S4, or S5 state
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Each fan header is wired to a fan tachometer input of the SIO
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All fan headers support closed-loop fan control that can adjust the fan speed or
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switch the fan on or off as needed
All fan headers have a +12 V DC connection
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The fan headers are controlled by Pulse Width Modulation
•
For information about
The location of the fan headers
The location of the fan headers and sensors for thermal monitoring
1.12.2.3

LAN Wake Capabilities

CAUTION
For LAN wake capabilities, the +5 V standby line for the power supply must be capable
of providing adequate +5 V standby current. Failure to provide adequate standby
current when implementing LAN wake capabilities can damage the power supply.
LAN wake capabilities enable remote wake-up of the computer through a network.
The LAN subsystem PCI bus network adapter monitors network traffic at the Media
Independent Interface. Upon detecting a Magic Packet* frame, the LAN subsystem
asserts a wake-up signal that powers up the computer. Table 10 on page 34 lists the
devices and events that can wake the computer from the S3 state. Depending on the
LAN implementation, the board supports LAN wake capabilities with ACPI in the
following ways:
The PCI Express WAKE# signal
•
• By Ping
Magic Packet
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The onboard LAN subsystem
•
1.12.2.4

Instantly Available PC Technology

CAUTION
For Instantly Available PC technology, the +5 V standby line for the power supply must
be capable of providing adequate +5 V standby current. Failure to provide adequate
standby current when implementing Instantly Available PC technology can damage the
power supply.
Instantly Available PC technology enables the board to enter the ACPI S3 (Suspend-to-
RAM) sleep-state. While in the S3 sleep-state, the computer will appear to be off (the
power supply is off, and the front panel LED is amber if dual colored, or off if single
colored.) When signaled by a wake-up device or event, the system quickly returns to
36
Refer to
Figure 9, page 42
Figure 6, page 30