MPC564EVB Freescale Semiconductor, MPC564EVB Datasheet - Page 592

• Manufacturer Part Number: MPC564EVB
• Description: KIT EVAL FOR MPC561/562/563/564
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC564EVB

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC56x
• Data Bus Width: 32 bit
• Interface Type: RS-232, Ethernet
• For Use With/related Products: MPC561, 562, 563, 564
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

QADC64E Enhanced Mode Operation
14.4.6
The on-chip periodic/interval timer can be used to generate trigger events at a programmable interval,
initiating execution of queue 1 and/or queue 2. The periodic/interval timer stays reset under the following
conditions:
The following two conditions will cause a pulsed reset of the periodic/interval timer during use:
During the low power stop mode, the periodic timer is held in reset. Since low power stop mode causes
QACR1 and QACR2 to be reset to zero, a valid periodic or interval timer mode must be written after stop
mode is exited to release the timer from reset.
When the IMB3 internal FREEZE line is asserted and a periodic or interval timer mode is selected, the
timer counter is reset after the conversion in progress completes. When the periodic or interval timer mode
has been enabled (the timer is counting), but a trigger event has not been issued, the freeze mode takes
effect immediately, and the timer is held in reset. When the internal FREEZE line is negated, the timer
counter starts counting from the beginning. Refer to
IMB3
14-50
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•
•
•
•
•
•
Interface” for more information.
Both queue 1 and queue 2 are programmed to any mode which does not use the periodic/interval
timer
IMB3 system reset or the master reset is asserted
Stop mode is selected
Freeze mode is selected
A queue 1 operating mode change to a mode which uses the periodic/interval timer, even if queue
2 is already using the timer
A queue 2 operating mode change to a mode which uses the periodic/interval timer, provided queue
1 is not in a mode which uses the periodic/interval timer
Roll over of the timer
Periodic/Interval Timer
Example
Number
Interval timer single-scan mode does not use the periodic/interval timer
until the single-scan enable bit is set.
1
2
3
Control Register 0 Information
Frequency
20 MHz
40 MHz
56 MHz
Table 14-22. QADC64E Clock Programmability
MPC561/MPC563 Reference Manual, Rev. 1.2
PRESCALER
0x1B
0x09
0x13
NOTE
Section 14.4.7, “Configuration and Control Using the
QCLK
(MHz)
Input Sample Time (IST) =0
2.0
2.0
2.0
Conversion Time
(µs)
7.0
7.0
7.0
Freescale Semiconductor