MPC564EVB Freescale Semiconductor, MPC564EVB Datasheet - Page 681

• 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

15.8.4
Freescale Semiconductor
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Available on a single SCI channel (SCI1) implemented by the queue transmit enable (QTE) bit set
by software. When enabled, (QTE = 1) the TDRE bit should be ignored by software and the TC bit
is redefined (as described later).
When the queue is disabled (QTE = 0), the SCI functions in single buffer transfer mode where the
queue size is set to one (QTSZ = 0000), and TDRE and TC function as previously defined.
Locations SCTQ[0:15] can be used as general purpose 9-bit registers. All other bits pertaining to
the queue should be ignored by software.
Programmable queue up to 16 transmits (SCTQ[0:15]) which may allow for infinite and
continuous transmits.
Available transmit wrap function to prevent message breaks for transmits greater than 16. This is
achieved by the transmit wrap enable (QTWE) bit. When QTWE is set, the hardware is allowed to
SCI1 Non-Queue Operation
QSCI1 Additional Transmit Operation Features
Queue CONTROL
Transmitter
Baud Rate
Clock
Figure 15-33. Queue Transmitter Block Enhancements
MPC561/MPC563 Reference Manual, Rev. 1.2
Queue STATUS
H (8) 7 6 5 4 3 2 1 0 L
SC1DR Tx Buffer
10 (11) - Bit
Tx Shift Register
Queue Control
Logic
4-bits
SCI Interrupt Request
SCTQ0
SCTQ1
SCTQ15
Queued Serial Multi-Channel Module
TxD
Data bus
15-63