TABLE OF CONTENTS
(Continued)
Paragraph
Title
Page
6.2.1.2
6.2.1.3
6.2.2
Freeze Operation ........................................................................... 6-3
QSM Interrupts ............................................................................... 6-3
QSM Pin Control Registers ....................................................................6-4
6.3
6.3.1
Queued Serial Peripheral Interface ................................................................6-5
QSPI Registers .......................................................................................6-6
Control Registers ........................................................................... 6-7
Status Register ............................................................................... 6-7
QSPI RAM ..............................................................................................6-7
Receive RAM ................................................................................. 6-8
Transmit RAM ................................................................................ 6-8
Command RAM .............................................................................. 6-8
QSPI Pins ...............................................................................................6-8
QSPI Operation ......................................................................................6-9
QSPI Operating Modes ........................................................................6-10
Master Mode ................................................................................ 6-17
Master Wraparound Mode ........................................................... 6-19
Slave Mode .................................................................................. 6-20
Slave Wraparound Mode ............................................................. 6-21
Peripheral Chip Selects ........................................................................6-21
Serial Communication Interface ...................................................................6-22
SCI Registers .......................................................................................6-22
Control Registers ......................................................................... 6-22
Status Register ............................................................................. 6-25
Data Register ............................................................................... 6-25
SCI Pins ...............................................................................................6-25
SCI Operation .......................................................................................6-25
Definition of Terms ....................................................................... 6-26
Serial Formats .............................................................................. 6-26
Baud Clock ................................................................................... 6-26
Parity Checking ............................................................................ 6-27
Transmitter Operation .................................................................. 6-27
Receiver Operation ...................................................................... 6-29
Idle-Line Detection ....................................................................... 6-29
Receiver Wakeup ......................................................................... 6-30
Internal Loop ................................................................................ 6-31
QSM Initialization .........................................................................................6-31
6.3.1.1
6.3.1.2
6.3.2
6.3.2.1
6.3.2.2
6.3.2.3
6.3.3
6.3.4
6.3.5
6.3.5.1
6.3.5.2
6.3.5.3
6.3.5.4
6.3.6
6.4
6.4.1
6.4.1.1
6.4.1.2
6.4.1.3
6.4.2
6.4.3
6.4.3.1
6.4.3.2
6.4.3.3
6.4.3.4
6.4.3.5
6.4.3.6
6.4.3.7
6.4.3.8
6.4.3.9
6.5
SECTION 7GENERAL-PURPOSE TIMER
7.1
7.2
7.3
General ...........................................................................................................7-1
GPT Registers and Address Map ...................................................................7-2
Special Modes of Operation ...........................................................................7-3
MC68331
MOTOROLA
USER’S MANUAL
vii
MOTOROLA [ MOTOROLA ]
