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Motorola MC68030 User Manual

Motorola MC68030
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MOTOROLA
MC68030 USER’S MANUAL
xxxv
TABLE OF CONTENTS
(
Continued
)
Paragraph
Number
Title
Page
Number
11.6.16 Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-49
11.6.17 Exception-Related Instructions and Operations . . . . . . . . . . . . . . . 11-50
11.6.18 Save and Restore Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-51
11.7 Address Translation Tree Search Timing. . . . . . . . . . . . . . . . . . . . . . 11-51
11.7.1 MMU Effective Address Calculation . . . . . . . . . . . . . . . . . . . . . . . . 11-58
11.7.2 MMU Instruction Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-60
11.8 Interrupt Latency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-61
11.9 Bus Arbitration Latency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-62
Section 12
Applications Information
12.1 Adapting the MC68030 to MC68020 Designs . . . . . . . . . . . . . . . . . . 12-1
12.1.1 Signal Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2
12.1.2 Hardware Differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3
12.1.3 Software Differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-4
12.2 Floating-Point Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-5
12.3 Byte Select Logic for the MC68030 . . . . . . . . . . . . . . . . . . . . . . . . . . 12-9
12.4 Memory Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-11
12.4.1 Access Time Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-14
12.4.2 Burst Mode Cycles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-17
12.5 Static RAM Memory Banks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-18
12.5.1 A Two-Clock Synchronous Memory Bank Using SRAMS. . . . . . . . 12-18
12.5.2 A 2-1-1-1 Burst Mode Memory Bank Using SRAMS. . . . . . . . . . . . 12-24
12.5.3 A 3-1-1-1 Burst Mode Memory Bank Using SRAMS. . . . . . . . . . . . 12-27
12.6 External Caches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-30
12.6.1 Cache Implementation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-32
12.6.2 Instruction-Only External Cache Implementations . . . . . . . . . . . . . 12-35
12.7 Debugging Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-35
12.7.1 Status and Refill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-36
12.7.2 Real-Time Instruction Trace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-39
12.8 Power and Ground Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . 12-43
Section 13
Electrical Characteristics
13.1 Maximum Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1
13.2 Thermal Characteristics — PGA Package. . . . . . . . . . . . . . . . . . . . . 13-1

Table of Contents

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Motorola MC68030 Specifications

General IconGeneral
BrandMotorola
ModelMC68030
CategoryComputer Hardware
LanguageEnglish

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