Production Data
WM8326
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
RTC Alarm time (MSW)
REFER TO
R16419
(4023h)
RTC Alarm
1
RTC_ALM
[15:0]
15:0
0000_0000
_0000_000
0
16 MSBs of RTC_ALM
Register 4023h RTC Alarm 1
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
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
REFER TO
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
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R16422
(4026h)
RTC Trim
RTC_TRIM
[9:0]
RTC frequency trim. Value is a 10bit fixed point <4,6>
2's complement number. MSB Scaling = -8Hz.
9:0
00_0000_0
000
The register indicates the error (in Hz) with respect to
the ideal 32768Hz) of the input crystal frequency.
Protected by security key.
Register 4026h RTC Trim
PD, June 2012, Rev 4.0
165
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
