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AAEON ETX-701 User Manual

Page 53

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E T X C P U M o d u l e

E T X - 7 0 1

Appendix A Programming the Watchdog Timer

A-4

= 10 Power LED pin is a 1Hz toggle pulse

with 50 duty cycle.

= 11 Power LED pin is a 1/4Hz toggle pulse

with 50 duty cycle.

Bit

5-4

: Reserved

Bit

3 : select WDTO count mode.

= 0

second

=

1

minute

Bit

2 : Enable the rising edge of keyboard Reset

(P20) to force Time-out event.

= 0 Disable

= 1 Enable

Bit

1-0

: Reserved

WatchDog Timer Register II (Index=F6h, Default=00h)

Bit

7-0 = 0 x 00 Time-out Disable

= 0 x 01 Time-out occurs after 1

second/minute

= 0 x 02 Time-out occurs after 2

second/minutes

= 0 x 03 Time-out occurs after 3

second/minutes

………………………………..

= 0 x FF Time-out occurs after 255

second/minutes