Kontron COMe-cTH6 - Manual (Page 36)

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COMe-cTH6 User’s Guide
www.kontron.com
5.10 Power Control Interface
VCC_12V is allowed to range from 4.75V to 20V. This range is above and beyond the requirements of the COM Express
specification.
5.10.1 Power Good (PWR_OK)
The COMe-cTH6 COM provides an external input for a Power Good signal (pin B24). The implementation of this
subsystem complies with the COM Express® Specification. PWR_OK is internally pulled up to 3.3V and must be
sampled as logic high to power on the module. The module includes a pull-up on Power Good enabling the module to
boot if COM Express PWR_OK is not used on the carrier board.
5.10.2 Power Button (PWRBTN#)
The power button (pin B12) is available through the COM Express connector as defined in the pin-out list. The FCH
handles the timing.
To power-off the module, press and hold the power button for at least four seconds.
5.10.3 5.10.3 Reset Button (SYS_RESET#)
The reset button (pin B49) is available through the COM Express connector as defined in the pin-out list. The module
stays in reset as long as SYS_RESET# is grounded.
DRAFT COPY FOR REVIEW ONLY
DRAFT COPY FOR REVIEW ONLY