Rainbow Electronics W90P710CDG User Manual
Page 429
W90P710CD/W90P710CDG
Publication Release Date: September 19, 2006
- 429 -
Revision B2
Continued
BITS
DESCRIPTIONS
Example 1
Frequency counter measurement: 32773.65Hz
Integer part: 32773 => FCR [11:8] = 0xc
Fraction part: 0.65 X 60 = 39(0x27) => FCR[5:0]=0x27
FCR Calibration
Example 2
Frequency counter measurement: 32765.27Hz
Integer part: 32765=> FCR [11:8] = 0x4
Fraction part: 0.27 X 60 = 16.2(0x10) => FCR [5:0] = 0x10
RTC Time Loading Register (RTC_TLR)
REGISTER ADDRESS R/W
DESCRIPTION
RESET
VALUE
RTC_TLR
0xFFF8_400C
R/W
RTC Time Loading Register
0X0000_0000
31
30
29
28
27
26
25
24
Reserved
23
22
21
20
19
18
17
16
Reserved
Hi_hr Lo_hr
15
14
13
12
11
10
9
8
Reserved
Hi_min Lo_min
7
6
5
4
3
2
1
0
Reserved
Hi_sec Lo_sec
Note: TLR is a BCD digit counter and RTC will not check loaded data.
BITS
DESCRIPTIONS
[21:20]
Hi_hr
10 hour time digit
[19:16]
Lo_hr
1 hour time digit
[14:12]
Hi_min
10 min time digit
[11:8]
Lo_min
1 min time digit
[6:4]
Hi_sec
10 sec time digit
[3:0]
Lo_sec
1 sec time digit