Motorola MCF5281 ユーザーズマニュアル
MOTOROLA
Chapter 27. Queued Analog-to-Digital Converter (QADC)
27-45
Digital Control Subsystem
Figure 27-30. CCW Priority Situation 8
Figure 27-31. CCW Priority Situation 9
Situations S10 and S11 (Figure 27-32 and Figure 27-33) show that when an additional
trigger event is detected for queue 2 while the queue is suspended, the trigger overrun error
bit is set, the same as if queue 2 were being executed when a new trigger event occurs.
Trigger overrun on queue 2 thus allows the user to know that queue 1 is taking up so much
QADC time that queue 2 trigger events are being lost.
trigger event is detected for queue 2 while the queue is suspended, the trigger overrun error
bit is set, the same as if queue 2 were being executed when a new trigger event occurs.
Trigger overrun on queue 2 thus allows the user to know that queue 1 is taking up so much
QADC time that queue 2 trigger events are being lost.
IDLE
Q1:
Q2:
QS:
IDLE
IDLE
0000
1000
0010
ACTIVE
C1
C2
T1
Q1:
C1
C3
C4
IDLE
Q2:
PF1
PAUSE
ACTIVE
CF1
T1
ACTIVE
SUSPEND
0100
ACTIVE
ACTIVE
0110
1010
C2
C3
C4
CF2
T2
0000
RESUME=1
C2
T1
PAUSE
Q1:
Q2:
QS:
IDLE
ACTIVE
IDLE
ACT
IDLE
0010
0110
1010
0010
ACTIVE
0000
IDLE
Q1:
PF1
C1
C2
0000
1010
0101
ACTIVE
PAUSE
0110
C1
Q2:
T2
C2
PF2
T1
C3
C4
CF1
C4
CF2
SUSPEND ACT
ACTIVE
SUSPEND
T2
C3
C1
RESUME=1
C2
C4