ADSP-BF537 Blackfin Processor Hardware Reference
18-3
Real-Time Clock
The RTC has dedicated power supply pins that power the clock functions
at all times, including when the core power supply is turned off.
provides a block diagram of the RTC.
Description of Operation
The following sections describe the operation of the RTC.
Figure 18-1. RTC Block Diagram
DAYS
COUNTER
DAY
ALARM
EVENT
24 HOURS
EVENT
1
0
9
RTC_ALARM REGISTER
RTC_PREN
EQUAL?
HOURS
COUNTER
MINUTES
COUNTER
SECONDS
COUNTER
HOURS
EVENT
MINUTES
EVENT
SECONDS
EVENT
PRESCALE
COUNTER
5
6
6
9
5
6
6
ALARM
EVENT
Y
Y
Y
Y
RTXI
32.768 kHz
1 Hz
TICK
SET
RST
STOPWATCH
EVENT
STOPWATCH
ENABLE
Y
16
STOPWATCH
COUNTER
WRITE
RTC_SWCNT
EQUAL?
EQUAL 0?
EQUAL?
EQUAL?
Summary of Contents for Blackfin ADSP-BF537
Page 42: ...Contents xlii ADSP BF537 Blackfin Processor Hardware Reference ...
Page 90: ...Development Tools 1 32 ADSP BF537 Blackfin Processor Hardware Reference ...
Page 138: ...Programming Examples 4 26 ADSP BF537 Blackfin Processor Hardware Reference ...
Page 340: ...SDC Programming Examples 6 84 ADSP BF537 Blackfin Processor Hardware Reference ...
Page 606: ...Programming Examples 9 94 ADSP BF537 Blackfin Processor Hardware Reference ...
Page 660: ...Programming Examples 10 54 ADSP BF537 Blackfin Processor Hardware Reference ...
Page 720: ...Electrical Specifications 11 60 ADSP BF537 Blackfin Processor Hardware Reference ...
Page 840: ...Programming Examples 13 42 ADSP BF537 Blackfin Processor Hardware Reference ...
Page 876: ...Programming Examples 14 36 ADSP BF537 Blackfin Processor Hardware Reference ...
Page 938: ...Programming Examples 15 62 ADSP BF537 Blackfin Processor Hardware Reference ...
Page 958: ...Programming Examples 17 12 ADSP BF537 Blackfin Processor Hardware Reference ...
Page 986: ...Programming Examples 18 28 ADSP BF537 Blackfin Processor Hardware Reference ...
Page 1162: ...G 26 ADSP BF537 Blackfin Processor Hardware Reference ...
Page 1218: ...Index I 56 ADSP BF537 Blackfin Processor Hardware Reference ...