WATCHDOG
20.4.3.14.2.2 Subsequence – Disable the Watchdog Timer
lists the steps to disable the watchdog timer.
Table 20-109. Disable the Watchdog Timer
Step
Register/Bit Field/Programming Model
Value
Write disable sequence Data1.
WDT_WSPR
XXXX AAAAh
Write disable sequence Data2.
WDT_WSPR
XXXX 5555h
20.4.3.14.2.3 Subsequence – Enable the Watchdog Timer
lists the steps to enable the watchdog timer.
Table 20-110. Enable the Watchdog Timer
Step
Register/Bit Field/Programming Model
Value
Write enable sequence Data1.
WDT_WSPR
XXXX BBBBh
Write enable sequence Data2.
WDT_WSPR
XXXX 4444h
20.4.4 Watchdog Registers
CAUTION
The watchdog timers registers are limited to 32-bit and 16-bit data accesses; 8-
bit access is not allowed and can corrupt register content.
NOTE:
•
The WDT_WISR and WDT_WIRQSTATRAW registers have the same functionality. The
WDT_WISR register is used for software backward compatibility.
•
The WDT_WIER and WDT_WIRQENSET/WDT_WIRQENCLR registers have the same
functionality. The WDT_WIER register is used for software backward compatibility.
•
The WDT_WIRQSTATRAW and WDT_WIRQSTAT registers give the same information
when read. The WDT_WIRQSTATRAW register is used for debug.
20.4.4.1 WATCHDOG_TIMER Registers
lists the memory-mapped registers for the WATCHDOG_TIMER. All register offset
addresses not listed in
should be considered as reserved locations and the register contents
should not be modified.
Table 20-111. WATCHDOG_TIMER REGISTERS
Offset
Acronym
Register Name
Section
0h
WDT_WIDR
Watchdog Identification Register
10h
WDT_WDSC
Watchdog System Control Register
14h
WDT_WDST
Watchdog Status Register
18h
WDT_WISR
Watchdog Interrupt Status Register
1Ch
WDT_WIER
Watchdog Interrupt Enable Register
24h
WDT_WCLR
Watchdog Control Register
28h
WDT_WCRR
Watchdog Counter Register
2Ch
WDT_WLDR
Watchdog Load Register
3680Timers
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated