WM8321
Production Data
REFER TO
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
RTC Seconds counter (LSW)
R16418
(4022h)
RTC Time 2
RTC_TIME
[15:0]
15:0
0000_0000
_0000_000
0
RTC_TIME increments by 1 every second. This is the
16 LSBs.
Register 4022h RTC Time 2
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
REFER TO
REFER TO
R16419
(4023h)
RTC Alarm
1
RTC_ALM
[15:0]
RTC Alarm time (MSW)
16 MSBs of RTC_ALM
15:0
0000_0000
_0000_000
0
Register 4023h RTC Alarm 1
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R16420
(4024h)
RTC Alarm
2
RTC_ALM
[15:0]
RTC Alarm time (LSW)
16 LSBs of RTC_ALM
15:0
0000_0000
_0000_000
0
Register 4024h RTC Alarm 2
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R16421
RTC_VALID
RTC Valid status
15
0
(4025h)
RTC Control
0 = RTC_TIME has not been set since Power On Reset
1 = RTC_TIME has been written to since Power On
Reset
RTC_SYNC_B
USY
RTC Busy status
0 = Normal
14
0
1 = Busy
The RTC registers should not be written to when
RTC_SYNC_BUSY = 1.
RTC_ALM_EN
A
RTC Alarm Enable
0 = Disabled
1 = Enabled
10
0
RTC_PINT_FR
EQ [2:0]
RTC Periodic Interrupt timeout period
000 = Disabled
001 = 2s
6:4
000
010 = 4s
011 = 8s
100 = 16s
101 = 32s
110 = 64s
111 = 128s
Register 4025h RTC Control
PD, February 2012, Rev 4.0
164
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
