Specifications

Chapter 2 Connecting Peripherals 29
2.14.2 External speaker (CN17)
CN17 is a 4-pin connector for an extenal speaker. If there is no
external speaker, the PCA-6176 provides an on-board buzzer as an
alternative. To enable the buzzer, set pins 3-4 as closed.
2.14.3 Reset (CN18)
Many computer cases offer the convenience of a reset button. Connect
the wire from the reset button to CN18.
2.14.4 IDE LED (CN19)
You can connect an LED to connector CN19 to indicate when the
HDD is active.
2.14.5 ATX soft power switch (CN21)
If your computer case is equipped with an ATX power supply, you
should connect the power on/off button on your computer case to
CN21. This connection enables you to turn your computer on and off.
2.15 ATX Power Control Connectors
(CN20 and CN21)
Note: Refer to the diagram on the opposite page for the
location of CN21.
2.15.1 ATX feature connector (CN20) and soft power
switch connector (CN21)
The PCA-6176 can support an advanced soft power switch function if
an ATX power supply is used. To enable the soft power switch
function:
CN20