Fujitsu MB91460 SERIES FR60 User Manual page 987

Table 5-1 32kHz : Ideal measurement results depending on measurement duration
The duration of the whole process from writing a 1 into the STRT bit until STRT is reset by
hardware is longer than the actual calibration measurement time, due to synchronization between
the different clock domains. Process Duration < (CUTD + 3)*T
The calibration measurement time is exact CUTD * T
Table 5-2 100kHz : Ideal measurement results depending on measurement duration
The duration of the whole process from writing a 1 into the STRT bit until STRT is reset by
hardware is longer than the actual calibration measurement time, due to synchronization between
the different clock domains. Process Duration < (CUTD + 3)*T
The calibration measurement time is exact CUTD * T
duration of CUTD
calibration value
2 sec 0x0000
1.75 sec 0xE000
1.5 sec 0xC000
1.25 sec 0xA000
1 sec 0x8000
0.75 sec 0x6000
0.5 sec 0x4000
0.25 sec 0x2000
duration of CUTD
calibration value
0.5 sec 0xC350
0.25 sec 0x61A8
0.125 sec 0x30D4
0.1 sec 0x2710
Chapter 50 Subclock Calibration Unit
CUTR
value
0x7A1200
0x6ACFC0
0x5B8D80
0x4C4B40
0x3D0900
0x2DC6C0
0x1E8480
0x0F4240
.
osc32
.
osc32
CUTR
value
0x1E8480
0x0F4240
0x07A120
0x061A80
.
osc100
.
osc100
5.Register Description
971