MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 529
MPC555CME
Manufacturer Part Number
MPC555CME
Description
KIT EVALUATION FOR MPC555
Manufacturer
Freescale Semiconductor
Type
Microcontrollerr
Datasheet
1.MPC555CME.pdf
(966 pages)
Specifications of MPC555CME
Contents
Module Board, Installation Guide, Power Supply, Cable, Software and more
Processor To Be Evaluated
MPC555
Data Bus Width
32 bit
Interface Type
RS-232
For Use With/related Products
MPC555
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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14.9.7 Example SCI Transmit for 25 Data Bytes
MPC555
USER’S MANUAL
3
Figure 14-19
1
QTSZ=1000 (9 Data Frames)
QTPNT
QTSZ=1111 (16 Data Frames)
QTPNT
0000
0111
1000
1111
Transmit Queue Enabled
0000
0111
1000
1111
QBHE Interrupt Received
(Wrap Occurred)
/
MPC556
Write SCTQ[8]
Clear QBHE
Load QPEND with QTSZ
Clear QTWE
Reset QTPNT
SCTQ[7]
Figure 14-19 Queue Transmit Example for 25 Data Frames
SCTQ[0]
SCTQ[8]
SCTQ[15]
SCTQ[0]
SCTQ[7]
SCTQ[8]
SCTQ[15]
below is an example of a transmission of 25 data frames.
QUEUED SERIAL MULTI-CHANNEL MODULE
QPEND
1000
0001
0000
QPEND
1111
1000
0111
0000
Rev. 15 October 2000
2
QTSZ=1111 (16 Data Frames)
QTPNT
4
QTSZ=1000 (9 Data Frames)
QTPNT
0000
0111
1000
1001
1111
0000
0111
1000
1111
QTHE Interrupt Received
QTHE Interrupt Received
Write QTSZ = 8 (16 + 9 = 25)
Write SCTQ [0:7] for 8 More Data Frames
Set QTWE
Clear QTHE
SCTQ[7]
SCTQ[0]
SCTQ[8]
SCTQ[15]
SCTQ[0]
SCTQ[7]
SCTQ[8]
SCTQ[15]
QPEND
QPEND
1000
0001
0000
1111
1111
1000
0111
0000
Data to be Transferred
Available Register Space
MOTOROLA
14-67
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