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CONTROL REGISTERS S3C9228/P9228
4-38
WTCON — Watch Timer Control Register DAH
Bit Identifier .7 .6 .5 .4 .3 .2 .1 .0
RESETRESET Value
0 0 0 0 0 0 0 –
Read/Write
R/W R/W R/W R/W R/W R/W R/W –
.7 Watch Timer Clock Selection Bit
0
Select main clock divided by 2
7
(fx/128)
1
Select sub clock (fxt)
.6 Watch Timer Interrupt Enable Bit
0
Disable watch timer interrupt
1
Enable watch timer interrupt
.5-.4 Buzzer Signal Selection Bits
0 0
0.5 kHz
0 1
1 kHz
1 0
2 kHz
1 1
4 kHz
.3-.2 Watch Timer Speed Selection Bits
0 0
Set watch timer interrupt to 1s
0 1
Set watch timer interrupt to 0.5s
1 0
Set watch timer interrupt to 0.25s
1 1
Set watch timer interrupt to 3.91ms
.1 Watch Timer Enable Bit
0
Disable watch timer; Clear frequency dividing circuits
1
Enable watch timer
.0
Not used for S3C9228/P9228