Analog Devices SHARC ADSP-214 Series Hardware Reference Manual page 695

RTC CORE VOLTAGE
INTERRUPT CONTROL
Interrupts and Status
Figure 18-2. Functional Partitioning
Operating Modes
The following sections provide information on the operating modes avail-
able to the real-time clock.
Alarm
The RTC provides two alarm features, programmed with the RTC alarm
register (
RTC_ALARM
second). When the alarm interrupt is enabled, the RTC generates an inter-
rupt each day at the time specified. The second alarm feature allows the
application to specify a day as well as a time. When the day alarm
ADSP-214xx SHARC Processor Hardware Reference
www.BDTIC.com/ADI
RTC CONTROL
Shadow Registers,
Read/Write Logic
DM/PM BUS
). The first is a time of day alarm (hour, minute, and
Real-Time Clock—ADSP-2147x
LEVEL SHIFTER
I/O TO CORE
RTC I/O VOLTAGE
ALARM
COUNTER
OSCILLATOR 0
OSCILLATOR 1
POWER
SWITCHING
CIRCUITRY
18-7