Interrupt-Enable Register (Rtcienr) - Motorola DragonBall MC68328 User Manual

SW FLAG
If enabled, the stopwatch flag is set when the stopwatch minute countdown experiences
a time out.
1 = Stopwatch timed out
0 = No stopwatch time out

5.1.4.5 INTERRUPT-ENABLE REGISTER (RTCIENR).

15 14 13 12
Address: $(FF)FFFB10
UNUSED
These unused bits read 0.
1-Hz INTERRUPT-ENABLE
This bit enables an interrupt at a 1 Hz rate.
1 = 1-Hz interrupt enabled
0 = 1-Hz interrupt disabled
24-HOUR INTERRUPT-ENABLE
This bit enables an interrupt at midnight rollover.
1 = 24-hour interrupt enabled
0 = 24-hour interrupt disabled
ALARM INTERRUPT ENABLE
This bit enables the alarm interrupt.
1 = Alarm interrupt enabled
0 = Alarm interrupt disabled
MIN INT ENABLE
This bit enables the minute-tick interrupt.
1 = Minute tick interrupt enables
0 = Minute tick interrupt disabled
SW INTERRUPT ENABLE
This bit enables the stopwatch interrupt. The stopwatch counts down and remains at dec-
imal -1 until it is reprogrammed. Note: If this bit is enabled with -1 (decimal) in the stop-
watch register, an interrupt will be posted on the next minute tick.
MOTOROLA MC68328 DRAGONBALL PROCESSOR USER'S MANUAL
11 10 9 8
UNUSED
Figure 5-6. Interrupt-Enable Register
7 6 5 4
1HZ
Enable
Real-Time Clock
3 2 1 0
24 Hr Alarm MIN INT SW
Enable Enable Enable Enable
Reset Value: $0000
5-5