UG-549
ADuCM310 Hardware Reference Manual
Rev. C | Page 170 of 192
REGISTER DETAILS: WATCHDOG TIMER
Load Value Register
Address: 0x40002580, Reset: 0x1000, Name: T3LD
Table 248. Bit Descriptions for T3LD
Bits
Bit Name
Description
Reset
Access
[15:0]
LOAD
Load value
0x1000
RW
Current Count Value Register
Address: 0x40002584, Reset: 0x1000, Name: T3VAL
Table 249. Bit Descriptions for T3VAL
Bits
Bit Name
Description
Reset
Access
[15:0]
CCOUNT
Current count value
0x1000
R
Control Register
Address: 0x40002588, Reset: 0x00E9, Name: T3CON
Table 250. Bit Descriptions for T3CON
Bits
Bit Name
Description
Reset
Access
[15:7]
RESERVED
Reserved.
0x1
R
6
MOD
Timer mode. Note that in free running mode, it wraps around at 0x1000.
0x1
RW
0: FREERUN. Cleared by user to operate in free running mode.
1: PERIODIC. Set by user to operate in periodic mode (default).
5
ENABLE
Timer enable.
0x1
RW
0: DIS. Cleared by user to disable the timer.
1: EN. Set by user to enable the timer (default).
4
RESERVED
Reserved.
0x0
R
[3:2]
PRE
Prescaler.
0x2
RW
00: DIV1. Source Clock/1.
01: DIV16. Source Clock/16.
10: DIV256. Source Clock/256 (default).
11: DIV4096. Source Clock/4096
1
IRQ
Timer interrupt.
0x0
RW
0: DIS. Cleared by user to generate a reset on a time out (default).
1: EN. Set by user to generate an interrupt when the timer times out. This
feature is provided for debug purposes and is only available in active mode.
0
PMD
Power mode disable. PMD controls the behavior of the watchdog when in
hibernate mode. If the application requires prolonged periods of time spent
in hibernate mode and it is not desirable to periodically wake up to service the
watchdog timer, the counter within the watchdog timer can be suspended
when entering the hibernate power mode. Regardless of how the PMD bit
is set, it is recommended that the watchdog timer be cleared before
entering hibernate mode.
0x1
RW
0: DIS. The watchdog timer continues its count down while in hibernate mode.
1: EN. When hibernate mode is entered, the watchdog counter suspends
its countdown. As hibernate mode is exited, the countdown resumes from
its current count value (the count is not reset).