14-28
MPC561/MPC563 Reference Manual
MOTOROLA
Programming the QADC64E Registers
One or both queues may be in the idle state. When a queue is idle, CCWs are not being
executed for that queue, the queue is not in the pause state, and there is not a trigger
pending.
The idle state occurs when a queue is disabled, when a queue is in a reserved mode, or when
a queue is in a valid queue operating mode awaiting a trigger event to initiate queue
execution.
Table 14-16. Pause Response
Scan Mode
Q Operation
PF Asserts?
External Trigger Single-scan
Pauses
Yes
External Trigger Continuous-scan
Pauses
Yes
Periodic/Interval Timer Trigger Single-scan
Pauses
Yes
Periodic/Interval Timer Continuous-scan
Pauses
Yes
Software Initiated Single-scan
Continues
Yes
Software Initiated Continuous-scan
Continues
Yes
External Gated Single-scan
Continues
No
External Gated Continuous-scan
Continues
No
Table 14-17. Queue Status
QS[9:6]
Queue 1/Queue 2 States
0000
queue 1 idle, queue 2 idle
0001
queue 1 idle, queue 2 paused
0010
queue 1 idle, queue 2 active
0011
queue 1 idle, queue 2 trigger pending
0100
queue 1 paused, queue 2 idle
0101
queue 1 paused, queue 2 paused
0110
queue 1 paused, queue 2 active
0111
queue 1 paused, queue 2 trigger pending
1000
queue 1 active, queue 2 idle
1001
queue 1 active, queue 2 paused
1010
queue 1 active, queue 2 suspended
1011
queue 1 active, queue 2 trigger pending
1100
Reserved
1101
Reserved
1110
Reserved
1111
Reserved