MC68LC040RC25A Datasheet, PDF (17/442 Pages) Freescale Semiconductor, Inc – M68040 Users Manual

Freescale Semiconductor, Inc.
LIST OF ILLUSTRATIONS (Continued)
Figure
Number
Title
Page
Number
7-26
7-27
7-28
7-29
7-30
7-31
7-32
7-33
7-34
7-35
7-36
7-37
7-38
7-39
7-40
7-41
7-42
7-43
7-44
7-45
7-46
7-47
7-48
Word Write Access Terminated with TEA Timing ........................................ 7-39
Line Read Access Terminated with TEA Timing .......................................... 7-40
Retry Read Transfer Timing .........................................................................7-41
Retry Operation on Line Write ......................................................................7-42
M68040 Internal Interpretation State Diagram and
External Bus Arbiter Circuit ........................................................................7-47
Lock Violation Example ................................................................................ 7-49
Processor Bus Request Timing ................................ .................................... 7-50
Arbitration During Relinquish and Retry Timing ........................................... 7-51
Implicit Bus Ownership Arbitration Timing.................................................... 7-52
Dual M68040 Fairness Arbitration State Diagram ........................................7-53
Dual M68040 Prioritized Arbitration State Diagram ..................................... 7-55
M68040 Synchronous DMA Arbitration ........................................................ 7-56
Sample Synchronizer Circuit ........................................................................ 7-57
M68040 Asynchronous DMA Arbitration ......................................................7-58
Snoop-Inhibited Bus Cycle ........................................................................... 7-61
Snoop Access with Memory Response ........................................................ 7-62
Snooped Line Read, Memory Inhibited ........................................................ 7-64
Snooped Long-Word Write, Memory Inhibited ............................................. 7-65
Initial Power-On Reset Timing...................................................................... 7-66
Normal Reset Timing ................................................................................... 7-67
Multiplexed Address and Data Bus (Line Write)........................................... 7-69
DLE Mode Block Diagram ............................................................................ 7-70
DLE versus Normal Data Read Timing ........................................................ 7-71
8-1 General Exception Processing Flowchart ....................................................8-3
8-2 General Form of Exception Stack Frame ..................................................... 8-4
8-3 Interrupt Recognition Examples ...................................................................8-14
8-4 Interrupt Exception Processing Flowchart ....................................................8-16
8-5 Reset Exception Processing Flowchart........................................................ 8-18
8-6 Flowchart of RTE Instruction for Throwaway Four-Word Frame .................. 8-22
8-7 Special Status Word Format ........................................................................ 8-24
8-8 Write-Back Status Format ............................................................................8-26
9-1 Floating-Point User Programming Model ..................................................... 9-2
9-2 Floating-Point Control Register .................................................................... 9-4
9-3 FPSR Condition Code Byte.......................................................................... 9-4
9-4 FPSR Quotient Byte ..................................................................................... 9-5
9-5 FPSR Exception Status Byte ....................................................................... 9-5
9-6 FPSR Accrued Exception Byte .................................................................... 9-6
9-7 Intermediate Result Format.......................................................................... 9-12
9-8 Rounding Algorithm Flowchart .....................................................................9-14
MOTOROLA
M68040 USER’S MANUAL
xix
For More Information On This Product,
Go to: www.freescale.com