MC68020FC16 查看數據表（PDF） - Motorola => Freescale

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MC68020FC16

MICROPROCESSORS USER’S MANUAL

Motorola => Freescale 

9/29/95

SECTION 1: OVERVIEW

UM Rev 1

LIST OF ILLUSTRATIONS (Continued)

Figure

Number

Title

Page

Number

5-24

5-25

5-26

5-27

5-28

5-29

5-30

5-31

5-32

5-33

5-34

5-35

5-36

5-37

5-38

5-39

5-40

5-41

5-42

5-43

5-44

5-45

5-46

5-47

5-48

5-49

5-50

5-51

5-52

Write Cycle Flowchart ......................................................................................5-33

Read-Write-Read Cycles—32-Bit Port .............................................................5-34

Byte and Word Write Cycles—32-Bit Port ........................................................5-35

Long-Word Operand Write—8-Bit Port ............................................................5-36

Long-Word Operand Write—16-Bit Port...........................................................5-37

Read-Modify-Write Cycle Flowchart .................................................................5-40

Byte Read-Modify-Write Cycle—32-Bit Port (TAS Instruction) ........................ 5-41

MC68020/EC020 CPU Space Address Encoding ............................................5-45

Interrupt Acknowledge Cycle Flowchart ...........................................................5-46

Interrupt Acknowledge Cycle Timing................................................................5-47

Autovector Operation Timing ...........................................................................5-49

Breakpoint Acknowledge Cycle Flowchart .......................................................5-50

Breakpoint Acknowledge Cycle Timing ............................................................5-51

Breakpoint Acknowledge Cycle Timing (Exception Signaled) ..........................5-52

Bus Error without DSACK1/DSACK0 .............................................................5-57

Late Bus Error with DSACK1/DSACK0 ..........................................................5-58

Late Retry.........................................................................................................5-59

Halt Operation Timing ......................................................................................5-61

MC68020 Bus Arbitration Flowchart for Single Request ..................................5-64

MC68020 Bus Arbitration Operation Timing for Single Request ......................5-65

MC68020 Bus Arbitration State Diagram .........................................................5-67

MC68020 Bus Arbitration Operation Timing—Bus Inactive .............................5-69

MC68EC020 Bus Arbitration Flowchart for Single Request ............................. 5-71

MC68EC020 Bus Arbitration Operation Timing for Single Request ................. 5-72

MC68EC020 Bus Arbitration State Diagram ....................................................5-73

MC68EC020 Bus Arbitration Operation Timing—Bus Inactive ........................ 5-75

Interface for Three-Wire to Two-Wire Bus Arbitration ......................................5-76

Initial Reset Operation Timing ..........................................................................5-77

RESET Instruction Timing ................................................................................5-78

6-1 Reset Operation Flowchart ..............................................................................6-5

6-2 Interrupt Pending Procedure ............................................................................6-12

6-3 Interrupt Recognition Examples .......................................................................6-13

6-4 Assertion of IPEND (MC68020 Only) ...............................................................6-14

6-5 Interrupt Exception Processing Flowchart ........................................................6-15

6-6 Breakpoint Instruction Flowchart ......................................................................6-18

6-7 RTE Instruction for Throwaway Four-Word Frame ..........................................6-20

6-8 Special Status Word Format ............................................................................6-22

7-1 F-Line Coprocessor Instruction Operation Word..............................................7-3

7-2 Asynchronous Non-DMA M68000 Coprocessor Interface Signal Usage ......... 7-5

7-3 MC68020/EC020 CPU Space Address Encodings ..........................................7-6

MOTOROLA

M68020 USER’S MANUAL

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