Table of Contents
Advertisement
17.2.7. Watchdog Timer Register WTIM
The Watchdog Timer Register is used to set up and to trigger the watchdog logic.
Table 35: Watchdog Timer Register WTIM
0x10C
Bit
7
Name
WTE
Access
Reset PS
0
WTE:
Watchdog timer expired status bit – This bit if set reports Watchdog timer has expired. This status bit
iscleared by writing a one to this bit.
0 = Watchdog timer has not expired
1 = Watchdog timer has expired
WMD[1:0]: Watchdog Mode – This bit field selects the Watchdog operation mode. The default setting after power up
is Timer only mode.
00 = Timer only mode
01 = Reset mode
10 = Interrupt mode
11 = Cascaded mode (dual-stage)
WEN/WTR: Watchdog timer enable / trigger. This bit is used to enable and trigger the Watchdog timer.
0 = Watchdog timer not enabled. Prior to the Watchdog being enabled, this bit acts as the WEN (Watchdog
timer enable). After the Watchdog is enabled by writing a one to WEN, this bit acts as WTR (Watchdog timer
trigger). Once the Watchdog timer has been enabled, this bit cannot be cleared. As long as the Watchdog
timer is enabled, WTR will be read as one.
1 = Watchdog timer enabled. Writing a one to this bit (WTR) causes the Watchdog to be retriggered to the
timer value indicated by bit field WTM[3:0].
WTM[3:0]: Watchdog timeout settings – This bit field selects one of sixteen possible Watchdog timeout delays.
0000 = 0,125 sec
0001 = 0,25 sec
0010 = 0,5 sec
0011 = 1 sec
0100 = 2 sec
0101 = 4 sec
0110 = 8 sec
0111 = 16 sec
1000 = 32 sec
1001 = 64 sec
1010 = 128 sec
1011 = 256 sec
1100 = 512 sec
1101 = 1024 sec
1110 = 2048 sec
1111 = 4096 sec
www.kontron.com
Watchdog Timer Register WTIM
6
5
WMD[1:0]
WEN/WTR
%00
4
3
0
KBox C-102 - User Guide, Rev. 1.0
2
1
WTM[3:0]
%0000
0
// 132
Advertisement
Table of Contents
