Analog Devices SHARC ADSP-214 Series Hardware Reference Manual page 703

the value written to
these registers before using the flags and interrupts associated with
their values.
The following is a list of flags along with the conditions under which they
are valid:
• Seconds (1 Hz) Event flag – Always set on the positive edge of the
1 Hz clock and after shadow registers have updated after waking
from Deep Sleep. This is valid as long as the RTC 1 Hz clock is
running. Use this flag or interrupt to validate the other flags.
• Write Complete – Always valid.
• Write Pending Status – Always valid.
• Minutes Event flag – Valid only after the second field in
is valid.
• Hours Event flag – Valid only after the minute field in
valid.
• 24 Hours Event flag – Valid only after the hour field in
valid.
• Stopwatch Event flag – Valid only after the
valid.
• Alarm Event flag – Valid only after the
registers are valid.
• Day Alarm Event flag – Same as Alarm.
ADSP-214xx SHARC Processor Hardware Reference
www.BDTIC.com/ADI
Real-Time Clock—ADSP-2147x
. Wait for the writes to complete on
RTC_CLOCK
RTC_STAT
RTC_STAT
RTC_STAT
register is
RTC_SWCNT
and
RTC_STAT RTC_ALARM
is
is
18-15