WM8321 Datasheet, PDF (164/253 Pages) Wolfson Microelectronics plc – Processor Power Management Subsystem

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