MOTOROLA
Chapter 14. QADC64E Enhanced Mode Operation
14-19
Programming the QADC64E Registers
Table 14-11. QACR1 Bit Descriptions
Bits
Name
Description
0
CIE1
Queue 1 Completion Interrupt Enable. CIE1 enables an interrupt upon completion of queue
1. The interrupt request is initiated when the conversion is complete for the CCW in queue
1.
0 Disable the queue completion interrupt associated with queue 1
1 Enable an interrupt after the conversion of the sample requested by the last CCW in
queue 1
1
PIE1
Queue 1 Pause Interrupt Enable. PIE1 enables an interrupt when queue 1 enters the pause
state. The interrupt request is initiated when conversion is complete for a CCW that has the
pause bit set.
0 Disable the pause interrupt associated with queue 1
1 Enable an interrupt after the conversion of the sample requested by a CCW in queue 1
which has the pause bit set
2
SSE1
Queue 1 Single-Scan Enable Bit. SSE1 enables a single-scan of queue 1 to start after a
trigger event occurs. The SSE1 bit may be set to a one during the same write cycle when
the MQ1 bits are set for one of the single-scan queue operating modes. The single-scan
enable bit can be written as a one or a zero, but is always read as a zero. The SSE1 bit
enables a trigger event to initiate queue execution for any single-scan operation on queue
1. The QADC64E clears the SSE1 bit when the single-scan is complete. Refer to
0 Trigger events are not accepted for single-scan modes
1 Accept a trigger event to start queue 1 in a single-scan mode
3:7
MQ1
Queue 1 Operating Mode. The MQ1 field selects the queue operating mode for queue 1.
Table 14-12 shows the bits in the MQ1 field which enable different queue 1 operating mode
8:15
—
Reserved
Table 14-12. Queue 1 Operating Modes
MQ1[3:7]
Operating Modes
00000
Disabled mode, conversions do not occur
00001
Software triggered single-scan mode (started with SSE1)
00010
External trigger rising edge single-scan mode
00011
External trigger falling edge single-scan mode
00100
Interval timer single-scan mode: time = QCLK period x 27
00101
Interval timer single-scan mode: time = QCLK period x 28
00110
Interval timer single-scan mode: time = QCLK period x 29
00111
Interval timer single-scan mode: time = QCLK period x 210
01000
Interval timer single-scan mode: time = QCLK period x 211
01001
Interval timer single-scan mode: time = QCLK period x 212
01010
Interval timer single-scan mode: time = QCLK period x 213
01011
Interval timer single-scan mode: time = QCLK period x 214
01100
Interval timer single-scan mode: time = QCLK period x 215