Time alarm register – Digi NS9215 User Manual
Page 464
R E A L T I M E C L O C K M O D U L E
Time Alarm register
464
Hardware Reference NS9215
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T i m e A l a r m r e g i s t e r
Address: 9006 0010
The Time Alarm register sets the time alarm. BCD is binary coded decimal.
Register
Register bit
assignment
13
12
11
10
9
8
7
6
5
4
3
2
1
0
15
14
31
29
28
27
26
25
24
23
22
21
20
19
18
17
16
30
Rsvd
Rsvd
Rsvd
PM
HR_T
HR_U
M_T
M_U
S_T
S_U
H_T
H_U
Bits
Access
Mnemonic
Reset
Description
D31
N/A
Reserved
N/A
N/A
D30
R/W
PM
0x0
PM
Used in 12 hour mode only.
0
AM
1
PM
D29:28
R/W
HR_T
0x0
Hours, tens, BCD digit (0-2)
D27:24
R/W
HR_U
0x0
Hours, units, BCD digit (0-9)
D23
N/A
Reserved
N/A
N/A
D22:20
R/W
M_T
0x0
Minutes, tens, BCD digit (0-5)
D19:16
R/W
M_U
0x0
Minutes, units, BCD digit (0-9)
D15
N/A
Reserved
N/A
N/A
D14:12
R/W
S_T
0x0
Seconds, tens, BCD digit (0-5)
D11:08
R/W
S_U
0x0
Seconds, units, BCD digit (0-9)
D07:04
R/W
H_T
0x0
Hundredths of a second, tens, BCD digit (0-9)
D03:00
R/W
H_U
0x0
Hundredths of a second, units, BCD digit (0-9)