Digi BL1800 Computer Hardware User Manual


 
User’s Manual
TABLE OF CONTENTS
Chapter 1. Introduction 1
1.1 Features.................................................................................................................................................1
1.2 Development and Evaluation Tools......................................................................................................2
1.3 How to Use This Manual......................................................................................................................3
1.3.1 Additional Product Information....................................................................................................3
1.3.2 Online Documentation..................................................................................................................3
1.4 CE Compliance.....................................................................................................................................4
1.4.1 Design Guidelines.........................................................................................................................5
1.4.2 Interfacing the Jackrabbit to Other Devices..................................................................................5
Chapter 2. Getting Started 7
2.1 Development Kit Contents....................................................................................................................7
2.2 Development Hardware Connections...................................................................................................8
2.2.1 Attach Jackrabbit to Prototyping Board........................................................................................9
2.2.2 Connect Programming Cable......................................................................................................10
2.2.3 Connect Power............................................................................................................................11
2.3 Installing Dynamic C..........................................................................................................................12
2.4 Run a Sample Program .......................................................................................................................13
2.4.1 Troubleshooting ..........................................................................................................................13
2.5 Where Do I Go From Here? ...............................................................................................................14
2.5.1 Real-Time Clock.........................................................................................................................14
2.5.2 Technical Support .......................................................................................................................14
Chapter 3. Subsystems 15
3.1 Jackrabbit Pinouts...............................................................................................................................16
3.1.1 Headers........................................................................................................................................16
3.2 Digital Inputs/Outputs.........................................................................................................................17
3.2.1 Digital Inputs...............................................................................................................................17
3.2.2 Digital Outputs............................................................................................................................18
3.2.3 Bidirectional I/O .........................................................................................................................20
3.3 A/D Converter.....................................................................................................................................21
3.4 D/A Converters...................................................................................................................................23
3.4.1 DA1.............................................................................................................................................24
3.4.2 DA0.............................................................................................................................................26
3.5 Serial Communication ........................................................................................................................28
3.5.1 RS-232 ........................................................................................................................................28
3.5.2 RS-485 ........................................................................................................................................28
3.5.3 Programming Port.......................................................................................................................30
3.6 Programming Cable............................................................................................................................32
3.6.1 Changing Between Program Mode and Run Mode....................................................................32
3.7 Memory...............................................................................................................................................33
3.7.1 SRAM .........................................................................................................................................33
3.7.2 Flash EPROM .............................................................................................................................33
3.8 Other Hardware...................................................................................................................................34
3.8.1 External Interrupts.......................................................................................................................34
3.8.2 Clock Doubler.............................................................................................................................34
3.8.3 Spectrum Spreader......................................................................................................................35