Samsung S3F401F - Manual (Page 235)

S3F401F_UM_REV1.00 TIMER
11-11
Timer Pre-Scale Register TPRE (0x004) Access: Read/Write
31 30 29 28 27 26 25 24
− − − − − − − −
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
23 22 21 20 19 18 17 16
− − − − − − − −
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
15 14 13 12 11 10 9 8
− − − − − − − −
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
7 6 5 4 3 2 1 0
PRESCALE[7:0]
R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1
W: Write R: Read -0: 0 After reset -1: 1 After reset -U: Undefined after reset
Pre-scale Value for Timer PRESCALE
0x00~ 0xFF
NOTE The PRESCALE register can be changed only when TEN is set to 0, in other words timer should be stop.
Timer input clock frequency (t
CLK
) = PCLK / (pre-scale value + 1)
pre-scale value = 0 – 255
For example)
PCLK = 90MHz
PRESCALE = 11