Contec SPI-8450-LLVA - Manual (Page 31)

CHAPTER 2 –Hardware Installations
24
SPI-8450-LLVA
2.21 ATX power control Connector: CN21
When used with an ATX-compliant power supply that supports remote power on/off,
the CPU board can turn off the system power through software control.
To enable soft-off control in software, advanced power management must be enabled
in the Setup program and in the operation system. When the system BIOS receives the correct
APM command from the operating system, the BIOS turns off power to the computer.
Pin No.
6
5
4
3
2
1
Function
5VSB
PS_ON
GND
PSWIN
GND
PCI_PME#
CN21
6
5
4
3
2
1
Housing: XHP-6 (JST)
Contact : SXH-001T-P0.6 (JST)
PS-ON
5VSB
5VSB
PS-ON
GND
CN21
6
5
4
3
2
1
ATX Power
Control signal
5VSB : Input 5V standby power from ATX power supply.
PS_ON : Output for ATX power supply On/Off control.
PSWIN : Connect power push switch. The same function as CN1 1pin(PowerBT).
PCI_PMW# : Connect to PME# signal of PCI bus, this CPU board can wake up from the PCI
board which supports PME (Power Management Event) function. When you
do not use this function, please keep open.
2.22 +12V power supply Connector :PW2
The connector that supplies the +12V power for the CPU.
The power supply that conformed for ATX12V is used, this connector connect
4Pin+12V cable directly from power supply. Use the 12V power cable of the
accessories, when other power supplies are used.
PW2 PIN No. Function PIN No. Function
4 +12V 2 GND
3 +12V 1 GND