QADC64E Enhanced Mode Operation
MPC561/MPC563 Reference Manual, Rev. 1.2
14-40
Freescale Semiconductor
Figure 14-22. 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.
NOTE
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
). Refer to
” for information on different scan modes.
The choice of single-scan or continuous-scan applies to the full queue, and is not applied to each
sub-queue. Once a sub-queue is initiated, each CCW is executed sequentially until the last CCW in the
sub-queue is executed and the pause state is entered. Execution can only continue with the next CCW,
which is the beginning of the next sub-queue. A sub-queue cannot be executed a second time before the
overall queue execution has been completed. Refer to
Section 14.3.7, “Control Register 2
” for more
information.
QADC64E CQP
00
BEGIN Queue 1
BQ2
63
END OF Queue 1
BEGIN Queue 2
END OF Queue 2
00
63
Channel Select
Sample, Hold
A/D Conversion
CONVERSION COMMAND WORD
(CCW) TABLE
RESULT WORD TABLE
0
P
0
0
1
0
0
0
1
0
0
0
0
1
0
1
0
1
0
P
1
P
0
PAUSE
PAUSE
PAUSE
PAUSE
PAUSE
PAUSE
and
Summary of Contents for MPC561
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Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
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