Rainbow Electronics W90N740 User Manual
Page 174
W90N740
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Watchdog Timer Control Register (WTCR)
Register Address
R/W/C
Description
Reset
Value
WTCR
0xFFF8.101C
R/W
Watchdog Timer Control Register
0x0000.0000
31
30
29
28
27
26
25
24
RESERVED
23
22
21
20
19
18
17
16
RESERVED
15
14
13
12
11
10
9
8
RESERVED nDBGACK_EN
RESERVED
7
6
5
4
3
2
1
0
WTE WTIE WTIS WTIF WTRF
WTRE
WTR
nDBGACK_EN [9]: ICE debug mode acknowledge enable
0 = When DBGACK is high, the timer clock will be held
1 = No matter what DBGACK is high or not, the timer clock will not be held
RESERVED [8]:
0 = Put the watchdog time in the normal operating mode
WTE [7]: Watchdog Timer Enable
0 = Disable the watchdog timer
1 = Enable the watchdog timer
WTIE [6]: Watchdog Timer Interrupt Enable
0 = Disable the watchdog timer interrupt
1 = Enable the watchdog timer interrupt
WTIS [5:4]: Watchdog Timer Interval Select
These two bits select the interval for the watchdog timer. No matter which interval is chosen, the reset
time-out is always occurred 512 clocks later than the interrupt time-out.