MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 528

• Manufacturer Part Number: MPC555CME
• Description: KIT EVALUATION FOR MPC555
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

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

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