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Figure
Number
LIST OF ILLUSTRATIONS (Continued)
Title
Page
Number
4-5
MC68340 Crystal Oscillator ....................... , .......................................................... 4-10
4-6
Clock Block Diagram for External Oscillator Operation .................................. .4-11
4-7
Full Interrupt Request Multiplexer ........................................................................ 4-16
4-8
SIM40 Programming Model. ................................................................................. 4-19
5-1
CPU32 Block Diagram ........................................................................................... 5-3
5-2
Loop Mode Instruction Sequence ....................................................................... 5-3
5-3
User Programming Model ..................................................................................... 5-9
5-4
Supervisor Programming Model Supplement .................................................. 5-9
5-5
Status Register ........................................................................................................ 5-10
5-6
Instruction Word General Format ......................................................................... 5-12
5-7
Table Example 1 ..................................................................................................... 5-30
5-8
Table Example 2 ..................................................................................................... 5-31
5-9
Table Example 3 ..................................................................................................... 5-33
5-1 0
Exception Stack Frame .......................................................................................... 5-42
5-11
Reset Operation Flowchart ..... , .............................................................................. 5-45
5-12
Format $O-Four-Word Stack Frame .................................................................. 5-60
5-13
Format $2-Six-Word Stack Frame .................................................................... 5-60
5-14
Internal Transfer Count Register .......................................................................... 5-61
5-15
Format $C-BERR Stack for Prefetches and Operands .................................. 5-62
5-16
Format $C-BERR Stack on MOVEM Operand ................................................ 5-62
5-17
Format $C-Four- and Six-Word BERRStack .................................................. 5-63
5-18
In-Circuit Emulator Configuration ........................................................................ 5-64
5-19
Bus State Analyzer Configuration ....................................................................... 5-64
5-20
BDM Block Diagram ............................................................................................... 5-65
5-21
BDM Command Execution Flowchart ................................................................. 5-68
5-22
Debug Serial
1/0
Block Diagram ...................................
~
...................................... 5-70
5-23
Serial Interface Timing Diagram .......................................................................... 5-71
5-24
BKPT.Timing for Single Bus Cycle ...................................................................... 5-72
5-25
BKPT Timing for Forcing BDM .............................................................................. 5-72
5-26
BKPT/DSCLK Logic Diagram ............................................................................... 5-72
5-27
Command-Sequence Diagram ............... : ............................................................ 5-75
5-28
Functional Model of Instruction Pipeline ............................................................ 5-87
5-29
Instruction Pipeline Timing Diagram ................................................................... 5-88
5-30
Block Diagram of Independent Resources ........................................................ 5-90
5-31
Simultaneous Instruction Execution .................................................................... 5-91
5-32
Attributed Instruction Times ................................................................................... 5-92
5-33
Example 1-lnstruction Stream ........................................................................... 5-95
5-34
Example 2-Branch Taken ................................................................................... 5-95
5-35
Example 2-Branch Not Taken ............................................................................ 5-96
5-36
Example 3-Branch Negative Tail ...................................................................... 5-96
xviii
MC68340 USER'S MANUAL
MOTOROLA
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