System Front Panel Control; Connector Cn16 Orientation; Watchdog Timer - BOSER Technology HS-7165 Manual

3.16 System Front Panel Control

The HS-7165 has front panel control at location CN116.
CN16: System Front Panel Control
PIN Description
1 220Ω pull VCC
3 HDD LED
5 ATX Power Button
7
9 Reset Switch
11

Connector CN16 Orientation

HDD LED
ATX Power
Button
Reset
Button

3.17 Watchdog Timer

Once the Enable cycle is active a Refresh cycle is requested before the
time-out period. This restarts counting of the WDT period. When the
time counting goes over the period preset of WDT, it will assume that
the program operation is abnormal. A reset system signal will restart
when such error happens.
The HS-7165 custom WDT circuit is implemented using the internal IO
of the Winbond Super I/O W83627UHG which is at 2Eh of LPC.
The following sample programs show how to enable, disable and
refresh the watchdog timer:
18
PIN Description
2
4
6
GND 8
10 220Ω pull 3.3V
GND 12
1 2
3 4
5 6
7 8
9 10
11 12
Speaker
N/C
GND
33Ω pull VCC
GND
Speaker
ATX
Power
LED