Digi Rabbit 5000, User Manual

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Table of Contents
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ABLE OF
C
ONTENTS
Chapter 1. The Rabbit 5000 Processor 13
1.1 Introduction.........................................................................................................................................13
1.2 Features...............................................................................................................................................14
1.3 Block Diagram....................................................................................................................................16
1.4 Basic Specifications ............................................................................................................................17
1.5 Comparing Rabbit Microprocessors ...................................................................................................18
Chapter 2. Clocks 21
2.1 Overview.............................................................................................................................................21
2.1.1 Block Diagram ...........................................................................................................................22
2.1.2 Registers .....................................................................................................................................22
2.2 Dependencies ......................................................................................................................................23
2.2.1 I/O Pins ......................................................................................................................................23
2.2.2 Other Registers ...........................................................................................................................23
2.3 Operation ............................................................................................................................................24
2.3.1 Main Clock .................................................................................................................................24
2.3.2 Spectrum Spreader .....................................................................................................................25
2.3.3 Clock Doubler ............................................................................................................................27
2.3.4 32 kHz Clock .............................................................................................................................30
2.4 Register Descriptions ..........................................................................................................................32
Chapter 3. Reset and Bootstrap 37
3.1 Overview.............................................................................................................................................37
3.1.1 Block Diagram ...........................................................................................................................38
3.1.2 Registers .....................................................................................................................................38
3.2 Dependencies ......................................................................................................................................39
3.2.1 I/O Pins ......................................................................................................................................39
3.2.2 Clocks .........................................................................................................................................39
3.2.3 Other Registers ...........................................................................................................................39
3.2.4 Interrupts ....................................................................................................................................39
3.3 Operation ............................................................................................................................................40
3.3.1 Asynchronous Serial Bootstrap ..................................................................................................42
3.3.2 Serial Flash Bootstrap ................................................................................................................42
3.3.3 Parallel Bootstrap .......................................................................................................................43
3.4 Register Descriptions ..........................................................................................................................44
Chapter 4. System Management 45
4.1 Overview.............................................................................................................................................45
4.1.1 Block Diagram ...........................................................................................................................46
4.1.2 Registers .....................................................................................................................................47
4.2 Dependencies ......................................................................................................................................48
4.2.1 I/O Pins ......................................................................................................................................48
4.2.2 Clocks .........................................................................................................................................48
4.2.3 Interrupts ....................................................................................................................................48