Maxim Integrated MAX32665 - Figure 18-4. Internal Implementation of Digital Trim, 4 Khz

MAX32665-MAX32668 User Guide
Maxim Integrated Page 375 of 457
Figure 18-4. Internal Implementation of Digital Trim, 4kHz
RTC_CTRL.enable = 1
TRIM_COUNT
< 1,000,000?
INCREMENT
RTS_SSEC TWICE
TRIM_COUNT
>2,000,000?
DO NOT
INCREMENT
TRIM_COUNT = TRIM_COUNT +
RTC_TRIM
LOOP_COUNT = LOOP_COUNT +1
(INCREMENTS 4kHz)
TRIM_COUNT =
1,000,000
RTC_TRIM = 0?
(TRIM FUNCTION
DISABLED)
INCREMENT
RTS_SSEC
Y
Y
Y
N
N
LOOP_COUNT =
16?
N
LOOP_COUNT = 0
Y
N
[256Hz DOMAIN]
[4kHz DOMAIN]