IEI Integration WAFER-LX v1.0 - Manual (Page 59)

WAFER-LX User Manual
JP1 (AT/ATX Mode Selector)
This jumper block controls the way you connect to a power supply
The CN13 connector is used to connect a chassis power On/Off button using an adapter cable.
The CN13 connector is configured through the JP1 jumper. The use of this connector is
briefed as follows:
1. Using ATX power: CN13 connects to an externally implemented power switch, and
the JP1 jumper should be left open.
2. Using AT power: The pins on JP1 are shorted by a jumper cap. The reason why
JP1 should be shorted is because the AMD Southbridge is
designed without the consideration for a power button signal and
the shorted JP1 provides a hardware feedback to initiate the
system. The power on/off function is then managed by the AT
power switch button.
JP1 Pin Configuration
Table 3-1 JP1 Pin Configuration
JP1 Power Mode Selector
1 AUTO_SW#
2 PWRBTN#
JP2: COM3 Serial Port Operation Mode Selector
This jumper block allows you to select an operation mode for the COM2 serial port (Default:
1-2).
Table 3-2 JP2 Pinouts
PIN
COMBINATION
DESCRIPTION
1-2 RS-422 (default)
2-3 RS-485
3-6 3-6
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