MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 528
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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14.9.6 Example QSCI1 Transmit for 17 Data Bytes
MPC555
USER’S MANUAL
Figure 14-18
the current value for QTPNT and QPEND. The italic type indicates the action just per-
formed by hardware. Regular type indicates the actions that should be performed by
software before the next event.
1
QTSZ=0000 (1 Data Frame)
QTPNT
QTSZ=1111 (16 Data Frames)
QTPNT
3
0000
0111
1000
1111
0000
0001
0111
1000
1111
Transmit Queue Enabled
/
MPC556
QBHE Interrupt Received
(Wrap Occurred)
Reset QTPNT
Load QPEND with QTSZ (0)
Clear QTWE
SCTQ[0]
SCTQ[15]
Figure 14-18 Queue Transmit Example for 17 Data Bytes
SCTQ[7]
SCTQ[0]
SCTQ[8]
SCTQ[15]
SCTQ[7]
SCTQ[8]
below shows a transmission of 17 data frames. The bold type indicates
QPEND
QUEUED SERIAL MULTI-CHANNEL MODULE
1000
1111
0111
0000
QPEND
0000
1111
Rev. 15 October 2000
QTSZ=1111 (16 Data Frames)
QTPNT
2
0000
0111
1000
1111
QTHE Interrupt Received
Data to beTransferred
Available Register Space
Write New QTSZ for When Wrap Occurs
QTSZ=0 (16+1=17),Set QTWE, Clear QTHE
Write SCTQ[0] for 17th Transfer
SCTQ[0]
SCTQ[8]
SCTQ[7]
SCTQ[15]
QPEND
1111
1000
0111
0000
MOTOROLA
14-66
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