MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 524

• 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

14.9.4 QSCI1 Additional Transmit Operation Features
MPC555
USER’S MANUAL
SCI1 Non-Queue Operation
• Available on a single SCI channel (SCI1) implemented by the queue transmit en-
• When the queue is disabled (QTE = 0), the SCI functions in single buffer transfer
• Programmable queue up to 16 transmits (SCTQ[0:15]) which may allow for infi-
• Available transmit wrap function to prevent message breaks for transmits greater
/
able (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).
mode where the queue size is set to one (QTSZ = 0000), and TDRE and TC func-
tion as previously defined. Locations SCTQ[0:15] can be used as general pur-
pose 9-bit registers. All other bits pertaining to the queue should be ignored by
software.
nite and continuous transmits.
MPC556
Queue Control
Figure 14-15 Queue Transmitter Block Enhancements
Transmitter
Baud Rate
Clock
QUEUED SERIAL MULTI-CHANNEL MODULE
Queue Status
Rev. 15 October 2000
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
SCTQ[0]
SCTQ[1]
SCTQ[15]
TxD
MOTOROLA
data bus
14-62