16
ICOP Embedded 386SX PC/104 AIO CPU Module User's Manual
3-0
Other function
Do not modify the value of these bits!
Watchdog timer - INDEX 39H, 3AH, 3BH
Index
3Bh 3Ah 39h
Bits
D7
……
D0 D7
……
D0 D7
……
D0
counter
[VSB
……………
.
…………………
...
………
..LSB]
For example
Index 3Bh
3Ah
39h
Time out
00h
00h
01h
30.5µs
00h
00h
02h
61µs
00h
01h
00h
7.8
ms
00h
02h
00h
15.6
ms
01h
00h
00h
2
s
02h
00h
00h
4
s
FFh
FFh
FFh
512
s
Timeout Status & Reset - INDEX 3CH
Bit Value
Action
7 0
1
Timeout has not occurred
Timeout has occured
6 1
0
Reset timer
Has no meaning
5-0
Other function, do not modify these bits
Programming the watchdog
To perform any operation on the M6117D configuration registers you
always
have to unlock first and lock the registers afterwards
Unlock configuration register
Lock configuration register
