S3C84E5/C84E9/P84E9CONTROL REGISTER

TACON — Timer A Control Register

E1H Set 1, Bank 1

Bit Identifier

Reset Value

Read/Write Addressing Mode

.7–.6

.7

 

.6

.5

 

.4

.3

.2

.1

.0

 

 

 

 

 

 

 

 

 

 

 

0

 

0

0

 

0

0

0

0

0

R/W

 

R/W

R/W

R/W

R/W

R/W

R/W

R/W

Register addressing mode only

 

 

 

 

 

Timer A Input Clock Selection Bits

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

0

fxx/1024

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

1

fxx/256

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

0

fxx/64

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

1

External clock (TACK)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

.5–.4

Timer A Operating Mode Selection Bits

 

0

0

Interval mode (TAOUT mode)

 

 

 

 

 

0

1

Capture mode (capture on rising edge, counter running, OVF can occur)

 

 

 

 

 

1

0

Capture mode (capture on falling edge, counter running, OVF can occur)

 

 

 

 

 

1

1

PWM mode (OVF interrupt can occur)

 

 

 

 

.3

Timer A Counter Clear Bit

 

0

No effect

 

 

 

 

1

Clear the timer A counter (Auto-clear bit)

 

 

 

.2

Timer A Overflow Interrupt Enable Bit

 

 

 

 

0

Disable overflow interrupt

 

 

 

 

1

Enable overflow interrupt

 

 

 

.1

Timer A Match/Capture Interrupt Enable Bit

 

 

 

 

0

Disable interrupt

 

 

 

 

1

Enable interrupt

 

 

 

.0

Timer A Start/Stop Bit

 

0

Stop timer A

 

 

 

 

1

Start timer A

 

 

 

4-35

Page 104
Image 104
Samsung S3C84E5 user manual Tacon Timer a Control Register E1H Set 1, Bank