MPC564EVB Freescale Semiconductor, MPC564EVB Datasheet - Page 685
![KIT EVAL FOR MPC561/562/563/564](/photos/39/39/393946/mpc564evbimage_sml.jpg)
MPC564EVB
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
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15.8.6
Figure 15-36
QTPNT and QPEND. The italic type indicates the action just performed by hardware. Regular type
indicates the actions that should be performed by software before the next event.
Freescale Semiconductor
1
QTSZ=0000 (1 Data Frame)
QTPNT
QTPNT
3
0000
0111
1000
1111
0000
0001
0111
1000
1111
Transmit Queue Enabled
QTSZ=1111 (16 Data Frames)
QBHE Interrupt Received
(Wrap Occurred)
Load QPEND with QTSZ (0)
Clear QTWE
Reset QTPNT
Example QSCI1 Transmit for 17 Data Bytes
below shows a transmission of 17 data frames. The bold type indicates the current value for
SCTQ15
SCTQ0
SCTQ0
SCTQ7
SCTQ8
SCTQ15
SCTQ7
SCTQ8
Figure 15-36. Queue Transmit Example for 17 Data Bytes
QPEND
1000
1111
0111
0000
QPEND
0000
1111
MPC561/MPC563 Reference Manual, Rev. 1.2
QTPNT
2
0000
0111
1000
1111
QTSZ=1111 (16 Data Frames)
QTHE Interrupt Received
Data to be transferred
Available register space
QTSZ=0 (16+1=17),Set QTWE, Clear QTHE
Write New QTSZ for When Wrap Occurs
Write SCTQ0 for 17th Transfer
SCTQ0
SCTQ8
SCTQ15
SCTQ7
QPEND
1111
1000
0111
0000
Queued Serial Multi-Channel Module
15-67
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