Aaeon EMB-9459T User Manual

Aaeon EMB-9459T User Manual Manual pdf 41 page image

M i n i - I T X E M B - 9 4 5 9 T R e v . BAppendix A Programming the Watchdog Timer A-2A.1 ProgrammingEMB-9459T Rev.B utilizes ITE 8712 chipset as its watchdog timercontroller.Below are the procedures to complete its configuration and theAAEON intial watchdog timer program is also attached based onwhich you can develop customized program to fit your application.Configuring Sequence DescriptionAfter the hardware reset or power-on reset, the ITE 8712 enters thenormal mode with all logical devices disabled except KBC. Theinitial state (enable bit ) of this logical device (KBC) is determinedby the state of pin 121 (DTR1#) at the falling edge of the systemreset during power-on reset.