Samsung S3C8275X - Manual (Page 76)

CONTROL REGISTERS S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
4-6
BTCON
— Basic Timer Control Register D3H Set 1
Bit Identifier .7 .6 .5 .4 .3 .2 .1 .0
Reset Value 0 0 0 0 0 0 0 0
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Addressing Mode Register addressing mode only
.7–.4 Watchdog Timer Function Disable Code (for System Reset)
1 0 1 0 Disable watchdog timer function
Other values Enable watchdog timer function
.3–.2 Basic Timer Input Clock Selection Bits
0 0 fxx/4096 (3)
0 1 fxx/1024
1 0 fxx/128
1 1 fxx/16
.1 Basic Timer Counter Clear Bit (1)
0 No effect
1 Clear the basic timer counter value
.0 Clock Frequency Divider Clear Bit for Basic Timer and Timer/Counters (2)
0 No effect
1 Clear both clock frequency dividers
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.).