Motorola MCF5281 用户手册
27-24
MCF5282 User’s Manual
MOTOROLA
Register Descriptions
Interval timer continuous-scan
Pauses
Yes
Software-initiated single-scan
Continues
Yes
Software-initiated continuous-scan
Continues
Yes
Externally gated single-scan
Continues
No
Externally gated continuous-scan
Continues
No
Table 27-12. 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
Table 27-11. CCW Pause Bit Response (continued)
Scan Mode
Queue Operation
PF Asserts?