MITWELL PSMC-C301 User’s Guide (Official R2.0)
Copyright © MITWELL 2017
PSMC-C301 User's Guide
36
6 Additional Features
6.1 Power Button
The SMARC module performs a power up sequence when you press this button. The power
button is connected to the SMARC
module’s POWER_BTN# signal.
6.2 Reset Button
When you press this button, the SMARC module and all components
connected on the SMARC will perform a hard reset. The reset button is
connected to the SMARC
module’s RESET_OUT# signal.
6.3 Sleep Button
The SMARC module enters a sleep state when you press this button. The
sleep button is connected to the SMARC
module’s SLEEP# signal.
6.4 Force Recovery Button
Low on this pin allows non-protected segments of Module boot device to be
rewritten / restored from an external USB Host on Module USB0. The Module
USB0 operates in Client Mode when Force Recovery function is invoked. Pull
high on the Module for SOCs that do not implement a USB based Force
Recovery functions, then a low on the Module FORCE_RECOV# pin may
invoke the SOC native Force Recovery mode
– such as over a Serial Port.
For x86 systems this signal may be used to load BIOS defaults.
6.5 LID Button
Pressing the LID button creates a low active signal used by the ACPI operating
system to detect a LID switch and to bring the system into either a sleep state
or to wake it up again. The LID button is connected to the Qseven®
module’s
LID_BTN# signal.
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