CXD5602 User Manual
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180/1010
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When
WrReg(Post/Pre)Cnt
value is reflected to (Post/Pre)Counter and Write Request
becomes possible to be issued again, this register is cleared to “0” automatically.
3.6.5.2.4
WrIntCtrl(0x18)
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Reserved
-
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved
Edge
Reserved
Busy
-
RW
-
RW
bit[0] : Busy (Request for waiting for External Alarm Flag)
When you write “1” on Busy, the internal RTC comes into the status of waiting for External Alarm Flag.
When the internal RTC detects the edge of the External Alarm Flag during this waiting status,
WrIntPostCnt
value and
WrIntPreCnt
value are reflected on PostCounter and PreCounter separately, and
the internal RTC is synchronized with the external RTC.
You can cancel Request for waiting for External Alarm Flag by writing
“1”
on
WrIntClr register
.
Busy
Description of Functions
0
Writing 0: You cannot write “0”.
1
Writing 1: makes internal RTC come into the status of waiting for the External Alarm
Flag.
When the internal RTC detects the External Alarm Flag during this waiting status
and
WrInt(Post/Pre)Cnt
value is reflected on (Post/Pre)Counter, this register is
cleared to “0” automatically.
bit[8] : Edge (Positive/Negative Edge Detection of the External Alarm Flag)
Edge
Description of Functions
0
Writing 0: detects rising edges of the External Alarm Flag and synchronizes the
internal RTC with the external RTC.
1
Writing 1: detects falling edges of the External Alarm Flag and synchronizes the
internal RTC with the external RTC.
Summary of Contents for CXD5602
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