4-bit divider settings (prescaler = 1) (prescaler = 255) (TCNTBn = 65535) 1/2 ( MCLK = 66 MHz ) 0.030 us (33.0 MHz ) 7.75 us (58.6 KHz ) 0.50 sec 1/4 ( MCLK = 66 MHz ) 0.060 us (16.5 MHz ) 15.5 us (58.6 KHz ) 1.02 sec 1/8 ( MCLK = 66 MHz ) 0.121 us (8.25 MHz ) 31.0 us (29.3 KHz ) 2.03 sec 1/16 ( MCLK = 66 MHz) 0.242 us (4.13 MHz) 62.1 us (14.6 KHz ) 4.07 sec 1/32 ( MCLK = 66 MHz) 0.485 us (2.06 MHz) 125 us (7.32 KHz ) 8.13 sec 这个是S3C44B0X 手册PWM TIMER的那张表,请教一下大家,这个表是怎么计算出来的。知道的能帮我解释一下吗,谢谢! |