MC68040RC25V datasheet(6/442 Pages) MOTOROLA

tên linh kiện	MC68040RC25V

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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viii

M68040 USER’S MANUAL

MOTOROLA

TABLE OF CONTENTS (Continued)

Paragraph

Page

Number

Title

Number

Section 4

Instruction and Data Caches

4.1

Cache Operation ................................................................................... 4-2

4.2

Cache Management.............................................................................. 4-5

4.3

Caching Modes ..................................................................................... 4-6

4.3.1

Cachable Accesses ........................................................................... 4-6

4.3.1.1

Write-Through Mode ......................................................................4-6

4.3.1.2

Copyback Mode ............................................................................. 4-6

4.3.2

Cache-Inhibited Accesses ................................................................. 4-7

4.3.3

Special Accesses .............................................................................. 4-7

4.4

Cache Protocol ..................................................................................... 4-7

4.4.1

Read Miss ......................................................................................... 4-8

4.4.2

Write Miss .......................................................................................... 4-8

4.4.3

Read Hit ............................................................................................ 4-8

4.4.4

Write Hit ............................................................................................. 4-8

4.5

Cache Coherency ................................................................................. 4-9

4.6

Memory Accesses for Cache Maintenance........................................... 4-11

4.6.1

Cache Filling...................................................................................... 4-11

4.6.2

Cache Pushes ................................................................................... 4-13

4.7

Cache Operation Summary................................................................... 4-13

4.7.1

Instruction Cache............................................................................... 4-14

4.7.2

Data Cache........................................................................................ 4-15

Section 5

Signal Description

5.1

Address Bus (A31–A0) ......................................................................... 5-4

5.2

Data Bus (D31–D0) ...............................................................................5-5

5.3

Transfer Attribute Signals...................................................................... 5-5

5.3.1

Transfer Type (TT1, TT0) .................................................................. 5-5

5.3.2

Transfer Modifier (TM2–TM0) ........................................................... 5-6

5.3.3

Transfer Line Number (TLN1, TLN0)................................................. 5-6

5.3.4

User-Programmable Attributes (UPA1, UPA0) .................................. 5-7

5.3.5

Read/Write (R/W) .............................................................................. 5-7

5.3.6

Transfer Size (SIZ1, SIZ0) ................................................................ 5-7

5.3.7

Lock (LOCK) ...................................................................................... 5-7

5.3.8

Lock End (LOCKE) ............................................................................ 5-7

5.3.9

Cache Inhibit Out (CIOUT) ................................................................ 5-8

5.4

Bus Transfer Control Signals ................................................................ 5-8

5.4.1

Transfer Start (TS) ............................................................................. 5-8

Freescale Semiconductor, Inc.

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Số phần tương tự - MC68040RC25V

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Freescale Semiconductor...	MC68040RC25V	3Mb / 442P	M68040 Users Manual

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Mô tả tương tự - MC68040RC25V

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