Samsung C8274X Manuel D’Utilisation
S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
CONTROL
REGISTER
4-45
TACON
— Timer 1/A Control Register
E6H
Set 1, Bank 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
Timer 1 Operating Mode Selection Bit
0
Two 8-bit timers mode (timer A/B)
1
One 16-bit timer mode (timer 1)
.6–.4
Timer 1/A Clock Selection Bits
0 0 0
fxx/512
0 0 1
fxx/256
0 1 0
fxx/64
0 1 1
fxx/8
1 0 0
fxx
(system
clock)
1 0 1
fxt
(sub
clock)
1 1 0
T1CLK
(external
clock)
1 1 1
Not
available
.3
Timer 1/A Counter Clear Bit
0 No
effect
1
Clear the timer 1/A counter (when write, automatically cleared to "0" after being
cleared basic timer counter)
cleared basic timer counter)
.2
Timer 1/A Counter Operating Enable Bit
0
Disable counting operation
1
Enable counting operation
.1
Timer 1/A Interrupt Enable Bit
0 Disable
interrupt
1 Enable
interrupt
.0
Timer 1/A Interrupt Pending Bit
0
No interrupt pending (when read), clear pending bit (when write)
1
Interrupt is pending (when read)