Samsung S3C84I8 User Manual page 78

CONTROL REGISTERS
BTCON
— Basic Timer Control Register
Bit Identifier
RESET Value
Read/Write
Addressing Mode
.7–.4
.3–.2
.1
.0
NOTES:
1. When you write a "1" to BTCON.1, the basic timer counter value is cleared to "00H". Immediately following the write
operation, the BTCON.1 value is automatically cleared to "0".
2. When you write a "1" to BTCON.0, the corresponding frequency divider is cleared to "00H". Immediately following the
write operation, the BTCON.0 value is automatically cleared to "0".
3. The fxx is selected clock for system (main OSC. or sub OSC.).
4-6
.7 .6
0 0
R/W R/W
Register addressing mode only
Watchdog Timer Function Disable Code (for System Reset)
1 0 1 0 Disable watchdog timer function
Other Vaules Enable watchdog timer function
Basic Timer Input Clock Selection Bits
(3)
0 0
fxx/4096
0 1 fxx/1024
1 0 fxx/128
1 1 fxx/1 (Not used)
Basic Timer Counter Clear Bit
0 No effect
1 Clear the basic timer counter value
Clock Frequency Divider Clear Bit for Basic Timer
0 No effect
1 Clear both clock frequency dividers
.5 .4
0 0
R/W R/W R/W
(1)
S3C84I8/F84I8/C84I9/F84I9
D3H
.3 .2 .1
0 0 0
R/W R/W
(2)
Set 1
.0
0
R/W