MC68LC040RC25A Datasheet, PDF (9/442 Pages) Freescale Semiconductor, Inc – M68040 Users Manual

Freescale Semiconductor, Inc.
TABLE OF CONTENTS (Continued)
Paragraph
Number
Title
Page
Number
7.8.2.3
7.8.2.4
7.9
7.9.1
7.9.2
7.9.3
7.9.4
7.10
7.11
7.11.1
7.11.2
7.11.3
M68040 Synchronous DMA Arbitration ..........................................7-55
M68040 Asynchronous DMA Arbitration ........................................7-57
Bus Snooping Operation .......................................................................7-59
Snoop-Inhibited Cycle........................................................................7-60
Snoop-Enabled Cycle (No Intervention Required) ............................ 7-61
Snoop Read Cycle (Intervention Required) .......................................7-63
Snoop Write Cycle (Intervention Required) .......................................7-63
Reset Operation ....................................................................................7-65
Special Modes of Operation ..................................................................7-68
Output Buffer Impedance Selection ...................................................7-68
Multiplexed Bus Mode .......................................................................7-68
Data Latch Enable Mode ...................................................................7-69
8.1
8.2
8.2.1
8.2.2
8.2.3
8.2.4
8.2.5
8.2.6
8.2.7
8.2.8
8.2.9
8.2.10
8.3
8.4
8.4.1
8.4.2
8.4.3
8.4.4
8.4.5
8.4.6
8.4.6.1
8.4.6.2
8.4.6.3
8.4.6.4
Section 8
Exception Processing
Exception Processing Overview ............................................................8-1
Integer Unit Exceptions ......................................................................... 8-5
Access Fault Exception ..................................................................... 8-6
Address Error Exception.................................................................... 8-8
Instruction Trap Exception .................................................................8-8
Illegal Instruction and Unimplemented Instruction Exceptions .......... 8-9
Privilege Violation Exception .............................................................8-9
Trace Exception .................................................................................8-10
Format Error Exception .....................................................................8-11
Breakpoint Instruction Exception ....................................................... 8-12
Interrupt Exception ............................................................................8-12
Reset Exception.................................................................................8-17
Exception Priorities ...............................................................................8-19
Return From Exceptions........................................................................8-20
Four-Word Stack Frame (Format $0) ................................................8-21
Four-Word Throwaway Stack Frame (Format $1) ............................. 8-21
Six-Word Stack Frame (Format $2) ...................................................8-22
Floating-Point Post-Instruction Stack Frame (Format $3) ................. 8-23
Eight-Word Stack Frame (Format $4)................................................8-23
Access Error Stack Frame (Format $7) .............................................8-24
Effective Address ...........................................................................8-24
Special Status Word (SSW) ...........................................................8-24
Write-Back Status ..........................................................................8-26
Fault Address .................................................................................8-26
MOTOROLA
M68040 USER’S MANUAL
xi
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