Aaeon PCM-QM77 Manual do Utilizador descarregar pdf (Página 132)

Compact Board PCM-QM77

Appendix A Programming the Watchdog Timer A-2

A.1 Programming

PCM-QM77 utilizes FINTEK 81866 chipset as its watchdog timer

controller. Below are the procedures to complete its configuration

and the AAEON initial watchdog timer program is also

attached based on which you can develop customized

program to fit your application.

Configuring Sequence Description

After the hardware reset or power-on reset, the FINTEK 81866

enters the normal mode with all logical devices disabled

except KBC. The initial state (enable bit ) of this logical device

(KBC) is determined by the state of pin 121 (DTR1#) at the falling

edge of the system reset during power-on reset.

1 2 ... 127 128 129 130 131 132 133 134 135 136 137 ... 171 172

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Aaeon PCM-QM77 Manual do Utilizador Página 132