s3c2410a Samsung Semiconductor, Inc., s3c2410a Datasheet - Page 435
s3c2410a
Manufacturer Part Number
s3c2410a
Description
16/32-bit Risc Arm Microprocessor
Manufacturer
Samsung Semiconductor, Inc.
Datasheet
1.S3C2410A.pdf
(599 pages)
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S3C2410A
WATCHDOG TIMER SPECIAL REGISTERS
WATCHDOG TIMER CONTROL (WTCON) REGISTER
The WTCON register allows the user to enable/disable the watchdog timer, select the clock signal from 4 different
sources, enable/disable interrupts, and enable/disable the watchdog timer output.
The Watchdog timer is used to resume the S3C2410A restart on mal-function after its power on; if controller restart
is not desired, the Watchdog timer should be disabled.
If the user wants to use the normal timer provided by the Watchdog timer, enable the interrupt and disable the
Watchdog timer.
WTCON
Prescaler Value
Reserved
Watchdog Timer
Clock Select
Interrupt Generation
Reserved
Reset
Enable/Disable
Register
WTCON
0x53000000
Address
[15:8]
[7:6]
[4:3]
Bit
[5]
[2]
[1]
[0]
Prescaler value.
The valid range is from 0 to (2
Reserved.
These two bits must be 00 in normal operation.
Enable or disable bit of Watchdog timer.
0 = Disable
1 = Enable
Determine the clock division factor.
00: 16
10: 64
Enable or disable bit of the interrupt.
0 = Disable
1 = Enable
Reserved.
This bit must be 0 in normal operation.
Enable or disable bit of Watchdog timer output for reset signal.
1: Assert reset signal of the S3C2410A at watchdog time-out
0: Disable the reset function of the watchdog timer.
R/W
R/W
Watchdog timer control register
01: 32
11: 128
Description
8
-1).
Description
WATCHDOG TIMER
Reset Value
Initial State
0x8021
0x80
00
00
1
0
0
1
18-3
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