Pwm Timer Operation; Prescaler & Divider - Samsung S3C2416 User Manual

S3C2416X RISC MICROPROCESSOR

2 PWM TIMER OPERATION

2.1 PRESCALER & DIVIDER
An 8-bit prescaler and a 4-bit divider make the following output frequencies:
4-bit Divider
Settings
1/2
(PCLK = 50 MHz)
1/4
(PCLK = 50 MHz)
1/8
(PCLK = 50 MHz)
1/16
(PCLK = 50 MHz)
Minimum Resolution
(prescaler = 0)
0.0400 us (25.000 MHz) 10.2400 us (97.6562 kHz)
0.0800 us (12.500 MHz) 20.4800 us (48.8281 kHz)
0.1600 us ( 6.250 MHz) 40.9601 us (24.4140 kHz)
0.3200 us ( 3.125 MHz) 81.9188 us (12.2070 kHz)
Maximum Resolution
(prescaler = 255)
Min. Interval Max. Interval
(TCNTBn = 1) (TCNTBn = 65535)
0.0800 us 0.6710 sec
0.1600 us 1.3421 sec
0.3200 us 2.6843 sec
0.6400 us 5.3686 sec
PWM TIMER
12-3