11/2/95
SECTION 1: OVERVIEW
UM Rev.1.0
vi
MC68340 USER'S MANUAL
MOTOROLA
TABLE OF CONTENTS (Continued)
Paragraph
Page
Number
Title
Number
3.4
CPU Space Cycles...........................................................................................3-21
3.4.1
Breakpoint Acknowledge Cycle.................................................................3-22
3.4.2
LPSTOP Broadcast Cycle...........................................................................3-23
3.4.3
Module Base Address Register Access....................................................3-27
3.4.4
Interrupt Acknowledge Bus Cycles............................................................3-27
3.4.4.1
Interrupt Acknowledge Cycle—Terminated Normally........................3-27
3.4.4.2
Autovector Interrupt Acknowledge Cycle .............................................3-29
3.4.4.3
Spurious Interrupt Cycle..........................................................................3-30
3.5
Bus Exception Control Cycles........................................................................3-32
3.5.1
Bus Errors.......................................................................................................3-34
3.5.2
Retry Operation .............................................................................................3-36
3.5.3
Halt Operation ...............................................................................................3-38
3.5.4
Double Bus Fault ..........................................................................................3-39
3.6
Bus Arbitration...................................................................................................3-40
3.6.1
Bus Request...................................................................................................3-43
3.6.2
Bus Grant........................................................................................................3-43
3.6.3
Bus Grant Acknowledge..............................................................................3-43
3.6.4
Bus Arbitration Control.................................................................................3-44
3.6.5
Show Cycles..................................................................................................3-44
3.7
Reset Operation ................................................................................................3-46
Section 4
System Integration Module
4.1
Module Overview..............................................................................................4-1
4.2
Module Operation.............................................................................................4-2
4.2.1
Module Base Address Register Operation...............................................4-2
4.2.2
System Configuration and Protection Operation....................................4-3
4.2.2.1
System Configuration ..............................................................................4-5
4.2.2.2
Internal Bus Monitor .................................................................................4-6
4.2.2.3
Double Bus Fault Monitor........................................................................4-6
4.2.2.4
Spurious Interrupt Monitor ......................................................................4-6
4.2.2.5
Software Watchdog ..................................................................................4-6
4.2.2.6
Periodic Interrupt Timer ...........................................................................4-7
4.2.2.6.1
Periodic Timer Period Calculation.....................................................4-8
4.2.2.6.2
Using the Periodic Timer as a Real-Time Clock .............................4-9
4.2.2.7
Simultaneous Interrupts by Sources in the SIM40.............................4-9
4.2.3
Clock Synthesizer Operation......................................................................4-9
4.2.3.1
Phase Comparator and Filter .................................................................4-11
4.2.3.2
Frequency Divider ....................................................................................4-12
4.2.3.3
Clock Control.............................................................................................4-13
4.2.4
Chip Select Operation .................................................................................4-13
4.2.4.1
Programmable Features..........................................................................4-14
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Freescale Semiconductor, Inc.
For More Information On This Product,
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