Motorola MPC533 Reference Manual page 564

Digital Subsystem
Figure 14-21 shows the CCW format and an example of using pause to create sub-queues.
Queue 1 is shown with four CCWs in each sub-queue and queue 2 has two CCWs in each
sub-queue.
CONVERSION COMMAND WORD
(CCW) TABLE
P
00
0 BEGIN Queue 1
0
0
1
PAUSE
0
0
0
1 PAUSE
0
P
0
END OF Queue 1
0
BQ2 0 BEGIN Queue 2
1
PAUSE
0
1
PAUSE
0
PAUSE
1
0
P
1
PAUSE
END OF Queue 2
63 0
Figure 14-21. QADC64E Queue Operation With Pause
The queue operating mode selected for queue 1 determines what type of trigger event
causes the execution of each of the sub-queues within queue 1. Similarly, the queue
operating mode for queue 2 determines the type of trigger event required to execute each
of the sub-queues within queue 2.
When the external trigger rising edge continuous-scan mode is
selected for queue 1, and there are six sub-queues within queue
1, a separate rising edge is required on the external trigger
signal after every pause to begin the execution of each
sub-queue (refer to Figure 14-21). Refer to Section 14.5.4,
"Scan Modes" for information on different scan modes.
14-40
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Channel Select
Sample, Hold
and
A/D Conversion
NOTE
MPC533 Reference Manual
RESULT WORD TABLE
QADC64E CQP
MOTOROLA
00
63