Technical product specification

Technical Reference
47
2.2.4.4.4 Power Switch Header
Pins 6 and 8 can be connected to a front panel momentary-contact power switch. The
switch must pull the SW_ON# pin to ground for at least 50 ms to signal the power
supply to switch on or off. (The time requirement is due to internal debounce circuitry
on the board.) At least two seconds must pass before the power supply will recognize
another on/off signal.
2.2.4.5 System ID / Custom Solutions Header (2.0 mm Pitch)
The System ID / Customs Solution header is provided to aid customers in developing
custom applications.
• Prog_LED#: general purpose signal output that indicates when an event was
triggered by the operating system. Signal is amplified by a transistor. Intel can
provide sample code for customers who may want to write their own applications
leveraging this signal.
• DMIC_CLK and DMIC_DATA: clock output and data I/O for digital microphone
interface.
• WDTO#: Watchdog timer that provides a general purpose implementation that can
be wired to external systems (i.e., industrial controls) or to the rest pin on the
board. Interested customers usually write their own software for watchdog timer
support.
• 3.3 V Standby: can be used to monitor the presence of 3.3 V standby power.
• HDMI Consumer Electronics Control (CEC): standard communication signal from
the Mini HDMI connector (http://www.hdmi.org/
) - the signal is exposed through
this header for third party solutions to monitor/control CEC activity between
multiple HDMI devices.
• 5 V Standby: can be used to monitor the presence of 5 V Standby power or provide
power from the 5 V Standby rail (up to 2A current rating).
• SCI/SMI GPI: input signal for direct connection to a front panel push-button to
trigger a Windows command. Intel will be adding BIOS support and accompanying
Windows utility to enable Direct Application Launch* feature. General information
about Direct Application Launch can be found at:
http://msdn.microsoft.com/en-us/windows/hardware/gg463078.aspx