MC68040V datasheet(8/442 Pages) MOTOROLA

tên linh kiện	MC68040V

Giải thích chi tiết về linh kiện	M68000-compatible, high-performance, 32-bit microprocessors

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nhà sản xuất	MOTOROLA [Motorola, Inc]

Trang chủ	http://www.freescale.com

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M68040 USER’S MANUAL

MOTOROLA

TABLE OF CONTENTS (Continued)

Paragraph

Page

Number

Title

Number

6.2.2

HIGHZ ............................................................................................... 6-4

6.2.3

SAMPLE/PRELOAD.......................................................................... 6-4

6.2.4

DRVCTL.T ......................................................................................... 6-4

6.2.5

SHUTDOWN .....................................................................................6-5

6.2.6

PRIVATE ........................................................................................... 6-5

6.2.7

DRVCTL.S......................................................................................... 6-5

6.2.8

BYPASS ............................................................................................ 6-6

6.3

Boundary Scan Register ....................................................................... 6-6

6.4

Restrictions ...........................................................................................6-12

6.5

Disabling The IEEE Standard 1149.1A Operation ................................ 6-13

6.6

Motorola M68040 BSDL Description (Version 2.2) ............................... 6-15

6.7

MC68040, MC68LC040, MC68EC040

JTAG Electrical Characteristics ..........................................................6-21

Section 7

Bus Operation

7.1

Bus Characteristics ............................................................................... 7-1

7.2

Data Transfer Mechanism..................................................................... 7-3

7.3

Misaligned Operands ............................................................................ 7-6

7.4

Processor Data Transfers ..................................................................... 7-9

7.4.1

Byte, Word, and Long-Word Read Transfers .................................... 7-10

7.4.2

Line Read Transfer ............................................................................7-12

7.4.3

Byte, Word, and Long-Word Write Transfers .................................... 7-20

7.4.4

Line Write Transfers .......................................................................... 7-22

7.4.5

Read-Modify-Write Transfers (Locked Transfers) ............................. 7-26

7.5

Acknowledge Bus Cycles ......................................................................7-29

7.5.1

Interrupt Acknowledge Bus Cycles ....................................................7-29

7.5.1.1

Interrupt Acknowledge BUS Cycle (Terminated Normally) ............ 7-31

7.5.1.2

Autovector Interrupt Acknowledge bus Cycle ................................ 7-33

7.5.1.3

Spurious Interrupt Acknowledge Bus Cycle................................... 7-34

7.5.2

Breakpoint Interrupt Acknowledge Bus Cycle ....................................... 7-35

7.6

Bus Exception Control Cycles............................................................... 7-36

7.6.1

Bus Errors ......................................................................................... 7-37

7.6.2

Retry Operation ................................................................................. 7-41

7.6.3

Double Bus Fault ............................................................................... 7-43

7.7

Bus Synchronization ............................................................................. 7-43

7.8

Bus Arbitration And Examples .............................................................. 7-44

7.8.1

Bus Arbitration ................................................................................... 7-45

7.8.2

Bus Arbitration Examples .................................................................. 7-52

7.8.2.1

Dual M68040 Fairness Arbitration .................................................7-52

7.8.2.2

Dual M68040 Prioritized Arbitration ............................................... 7-54

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

Số phần tương tự - MC68040V

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Motorola, Inc	MC68040V	3Mb / 442P	Freescale Semiconductor, Inc.

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