MPC564EVB Freescale Semiconductor, MPC564EVB Datasheet - Page 685

• 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

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