MC68302 NXP Semiconductors

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Freescale Semiconductor Inc,www freescale com,support freescale com. USA Europe or Locations Not Listed,Freescale Semiconductor. Freescale Semiconductor Inc,Technical Information Center CH370. 1300 N Alma School Road,Chandler Arizona 85224,800 521 6274. 480 768 2130,support freescale com,Europe Middle East and Africa.
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Section 2 MC68000 MC68008 Core,Section 3 System Integration Block SIB. Section 4 Communications Processor CP,Section 5 Signal Description. Section 6 Electrical Characteristics, Section 7 Mechanical Data And Ordering Information. Appendix B Development Tools and Support,Appendix C RISC Microcode from RAM. Appendix D MC68302 Applications,Appendix E SCC Programming Reference.
Appendix F Design Checklist,ELECTRONIC SUPPORT, The Technical Support BBS known as AESOP Application Engineering Support Through. On Line Productivity can be reach by modem or the internet AESOP provides commonly. asked application questons latest device errata device specs software code and many. other useful support functions, Modem Call 1 800 843 3451 outside US or Canada 512 891 3650 on a modem that runs. at 14 400 bps or slower Set your software to N 8 1 F emulating a vt100. Internet This access is provided by telneting to pirs aus sps mot com 129 38 233 1 or. through the World Wide Web at http pirs aus sps mot com. Sales Offices, For questions or comments pertaining to technical information questions and applications. please contact one of the following sales offices nearest you. MC68302 USER S MANUAL iii,For More Information On This Product. Go to www freescale com,Freescale Semiconductor Inc.
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TABLE OF CONTENTS,Paragraph Title Page,Number Number. General Description,1 1 Block Diagram 1 1,1 2 Features 1 3. 1 3 MC68302 System Architecture 1 4,Freescale Semiconductor Inc. 1 4 NMSI Communications Oriented Environment 1 5, 1 5 Basic Rate ISDN or Digital Voice Data Terminal 1 6. MC68000 MC68008 Core,2 1 Programming Model 2 1,2 2 Instruction Set Summary 2 3.
2 3 Address Spaces 2 6,2 4 Exception Processing 2 8. 2 4 1 Exception Vectors 2 8,2 4 2 Exception Stacking Order 2 9. 2 5 Interrupt Processing 2 11,2 6 M68000 Signal Differences 2 11. 2 7 MC68302 IMP Configuration Control 2 12,2 8 MC68302 Memory Map 2 14. 2 9 Event Registers 2 19,System Integration Block SIB.
3 1 DMA Control 3 2,3 1 1 Key Features 3 2, 3 1 2 IDMA Registers Independent DMA Controller 3 3. 3 1 2 1 Channel Mode Register CMR 3 4,3 1 2 2 Source Address Pointer Register SAPR 3 6. 3 1 2 3 Destination Address Pointer Register DAPR 3 6. 3 1 2 4 Function Code Register FCR 3 7,3 1 2 5 Byte Count Register BCR 3 7. 3 1 2 6 Channel Status Register CSR 3 7,3 1 3 Interface Signals 3 8. 3 1 3 1 DREQ and DACK 3 8,3 1 3 2 DONE 3 8,3 1 4 IDMA Operational Description 3 9.
3 1 4 1 Channel Initialization 3 9,3 1 4 2 Data Transfer 3 9. MC68302 USER S MANUAL v,For More Information On This Product. Go to www freescale com,Table of Contents Freescale Semiconductor Inc. Paragraph Title Page,Number Number,3 1 4 3 Address Sequencing 3 10. 3 1 4 4 Transfer Request Generation 3 11,3 1 4 5 Block Transfer Termination 3 12.
3 1 5 IDMA Programming 3 13,3 1 6 DMA Bus Arbitration 3 14. 3 1 7 Bus Exceptions 3 14,3 1 7 1 Reset 3 15,3 1 7 2 Bus Error 3 15. 3 1 7 3 Halt 3 15,3 1 7 4 Relinquish and Retry 3 15. 3 2 Interrupt Controller 3 15,3 2 1 Overview 3 16,Freescale Semiconductor Inc. 3 2 1 1 IMP Interrupt Processing Overview 3 16,3 2 1 2 Interrupt Controller Overview 3 17.
3 2 2 Interrupt Priorities 3 18,3 2 2 1 INRQ and EXRQ Priority Levels 3 18. 3 2 2 2 INRQ Interrupt Source Priorities 3 19,3 2 2 3 Nested Interrupts 3 19. 3 2 3 Masking Interrupt Sources and Events 3 20,3 2 4 Interrupt Vector 3 21. 3 2 5 Interrupt Controller Programming Model 3 24,3 2 5 1 Global Interrupt Mode Register GIMR 3 24. 3 2 5 2 Interrupt Pending Register IPR 3 26,3 2 5 3 Interrupt Mask Register IMR 3 27.
3 2 5 4 Interrupt In Service Register ISR 3 28,3 2 6 Interrupt Handler Examples 3 28. 3 3 Parallel I O Ports 3 29,3 3 1 Port A 3 29,3 3 2 Port B 3 31. 3 3 2 1 PB7 PB0 3 31,3 3 2 2 PB11 PB8 3 32,3 3 3 I O Port Registers 3 32. 3 4 Dual Port RAM 3 33,3 5 Timers 3 35,3 5 1 Timer Key Features 3 36. 3 5 2 General Purpose Timer Units 3 37,3 5 2 1 Timer Mode Register TMR1 TMR2 3 37.
3 5 2 2 Timer Reference Registers TRR1 TRR2 3 38,3 5 2 3 Timer Capture Registers TCR1 TCR2 3 39. 3 5 2 4 Timer Counter TCN1 TCN2 3 39,3 5 2 5 Timer Event Registers TER1 TER2 3 39. 3 5 2 6 General Purpose Timer Example 3 40,3 5 2 6 1 Timer Example 1 3 40. 3 5 2 6 2 Timer Example 2 3 40,3 5 3 Timer 3 Software Watchdog Timer 3 41. vi MC68302 USER S MANUAL,For More Information On This Product.
Go to www freescale com,Freescale Semiconductor Inc Table of Contents. Paragraph Title Page,Number Number,3 5 3 1 Software Watchdog Timer Operation 3 41. 3 5 3 2 Software Watchdog Reference Register WRR 3 41. 3 5 3 3 Software Watchdog Counter WCN 3 42, 3 6 External Chip Select Signals and Wait State Logic 3 42. 3 6 1 Chip Select Logic Key Features 3 45,3 6 2 Chip Select Registers 3 45. 3 6 2 1 Base Register BR3 BR0 3 45,3 6 2 2 Option Registers OR3 OR0 3 47.
3 6 3 Chip Select Example 3 48,3 7 On Chip Clock Generator 3 49. 3 8 System Control 3 50,3 8 1 System Control Register SCR 3 50. Freescale Semiconductor Inc,3 8 2 System Status Bits 3 51. 3 8 3 System Control Bits 3 52,3 8 4 Disable CPU Logic M68000 3 54. 3 8 5 Bus Arbitration Logic 3 56,3 8 5 1 Internal Bus Arbitration 3 56.
MC68302 USER S MANUAL iii PREFACE The complete documentation package for the MC68302 consists of the M68000PM AD MC68000 Family Programmer s Reference Manual MC68302UM AD MC68302 Integrated Multiprotocol Processor User s Manual and the MC68302 D MC68302 Integrated Multipro tocol Processor Product Brief The

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