Kontron COMe-cXLi2 - Manual (Page 47)

Kontron COMe-cXLi2 User’s Guide
www.kontron.com
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Specification. PWR_OK is internally pulled up to 3.3V and must be high-level
to power on the module.
Power Button (PWRBTN#)
The power button (pin B12) is available through the module connector as
defined in the pin-out list. To start the module using the power button the
PWRBTN# signal must be at least 50ms (50ms
≤ t < 4sec) at low-level power.
By pressing the power button for at least four seconds, the module can be put
into the power-off mode.
Reset Button (SYS_RESET#)
The reset button (pin B49) is available through the module connector as
defined in the pin-out list. The module stays in reset as long as SYS_RESET#
is grounded.
Power Supply
The COMe-cXLi2 COM has a wide range of power inputs, from 5V to 18V DC. The
supply voltage is applied through 42 pins (VCC) on the module connector.
The module does not support ATX mode. The COMe-cXLi module will auto power
on whenever +5V_Standby or +12V is present without pressing the power on
button.
Single Supply Mode
Single Supply Mode:
In single supply mode the module starts automatically when VCC power is
connected and Power Good input is open or at high-level (internal PU to
3.3V). PS_ON# is not used in single supply mode.
To power on the module from the S5 state, press the power button or reconnect
VCC.
Table 11: Single Supply Mode
State PWRBTN# PWR_OK V5_StdBy VCC
G3 X x x 0
G3 -> S0 High open / high x connecting
VCC
S5 high open / high x VCC