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Motorola Espresso Maker MC68340 User Manual

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Page of 441
11/2/95
SECTION 1:  OVERVIEW
UM Rev 1
MOTOROLA
MC68340 USER'S MANUAL
xvii
LIST OF ILLUSTRATIONS
Figure
P a g e
Number
Title
Number
1-1
Block Diagram.........................................................................................................
 1-1
2-1
Functional Signal Groups .....................................................................................
 2-1
3-1
Input Sample Window............................................................................................
 3-2
3-2
MC68340 Interface to Various Port Sizes..........................................................
 3-7
3-3
Long-Word Operand Read Timing from 8-Bit Port............................................
 3-11
3-4
Long-Word Operand Write Timing to 8-Bit Port.................................................
 3-12
3-5
Long-Word and Word Read and Write Timing—16-Bit Port ...........................
 3-13
3-6
Fast Termination Timing........................................................................................
 3-15
3-7
Word Read Cycle Flowchart .................................................................................
 3-16
3-8
Word Write Cycle Flowchart..................................................................................
 3-18
3-9
Read-Modify-Write Cycle Timing .........................................................................
 3-19
3-10
CPU Space Address Encoding............................................................................
 3-21
3-11
Breakpoint Operation Flowchart ..........................................................................
 3-24
3-12
Breakpoint Acknowledge Cycle Timing (Opcode Returned)..........................
 3-25
3-13
Breakpoint Acknowledge Cycle Timing (Exception Signaled) ......................
 3-26
3-14
Interrupt Acknowledge Cycle Flowchart.............................................................
 3-28
3-15
Interrupt Acknowledge Cycle Timing ..................................................................
 3-29
3-16
Autovector Operation Timing................................................................................
 3-31
3-17
Bus Error without 
DSACK
≈
...................................................................................
 3-35
3-18
Late Bus Error with 
DSACK
≈
................................................................................
 3-36
3-19
Retry Sequence ......................................................................................................
 3-37
3-20
Late Retry Sequence .............................................................................................
 3-38
3-21
HALT
 Timing............................................................................................................
 3-39
3-22
Bus Arbitration Flowchart for Single Request....................................................
 3-41
3-23
Bus Arbitration Timing Diagram—Idle Bus Case..............................................
 3-42
3-24
Bus Arbitration Timing Diagram—Active Bus Case .........................................
 3-42
3-25
Bus Arbitration State Diagram..............................................................................
 3-45
3-26
Show Cycle Timing Diagram................................................................................
 3-46
3-27
Timing for External Devices Driving 
RESET
......................................................
 3-47
3-28
Power-Up Reset Timing Diagram........................................................................
 3-48
4-1
SIM40 Module Register Block..............................................................................
 4-3
4-2
System Configuration and Protection Function ................................................
 4-5
4-3
Software Watchdog Block Diagram ....................................................................
 4-7
4-4
Clock Block Diagram for Crystal Operation .......................................................
 4-10
 
   
  
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Freescale Semiconductor, Inc.
For More Information On This Product,
   Go to: www.freescale.com
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