Commell LS-372 + USDC20D shutdown controller
My project run its way but I have some problems.
I have got a problem with Commell LS-372 and USDC20D shut down controller.
The USDC20D shutdown controller use "short to ground" when sending signal to the motherboard power button.
But my Commell LS-372 Motherboard seems to need +5V signal on power button to power up.
I made all tests.
When the motherboard is powered but off, first pin of the power button header is nothing (not grounded, tested with multimeter) and the second is +5V.
If I short to ground the first pin, the second or both, nothing happen. But if I supply +5V to first pin, the motherboard wake up.
My shut down controller do not short pin together, it shorts pins to ground.
But ground , this is not +5V so the motherboard do not wake up.
Can someone help me with a little schema?
When the input in grounded, the output is +5V (or the 2 outputs are connecting together).
Thank you for help.