Rabbit 2000 - 17.2 Reading and Writing I;O Registers

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164 Rabbit 2000 Microprocessor

Table of Contents

Default Chapter3
- Table of Contents3
Chapter 1. Introduction7
- Features and Specifications7
- Summary of Rabbit Advantages11
Chapter 2. Rabbit Design Features13
- The Rabbit 8-Bit Processor Vs. 16-Bit and 32-Bit Processors14
- Overview of On-Chip Peripherals14
- Design Standards18
  - Programming Port18
  - Standard BIOS18
- Dynamic C Support for the Rabbit18
Chapter 3 . Details on Rabbit19
- Processor Registers19
- Memory Mapping21
- Instruction Set Outline28
- How to Do It in Assembly Language-Tips and Tricks37
- Interrupt Structure41
Chapter 4. Rabbit Capabilities47
- Precisely Timed Output Pulses47
  - Pulse Width Modulation to Reduce Relay Power49
- Open-Drain Outputs Used for Key Scan50
- Cold Boot51
- The Slave Port52
  - Slave Rabbit as a Protocol UART53
Chapter 5. Pin Assignments and Functions55
- Package Schematic and Pinout55
- Package Mechanical Dimensions56
- Rabbit Pin Descriptions58
- Bus Timing64
- Description of Pins with Alternate Functions65
- DC Characteristics67
  - Volts68
  - Volts69
- I/O Buffer Sourcing and Sinking Limit70
Chapter 6. Rabbit Internal I/O Registers71
- Default Values for All the Peripheral Control Registers71
Chapter 7. Miscellaneous I/O Functions77
- Processor Identification77
- Rabbit Oscillators and Clocks78
- Clock Doubler80
- Controlling Power Consumption82
- Output Pins CLK, STATUS, /WDTOUT, /BUFEN83
- Time/Date Clock (Real-Time Clock)84
- Watchdog Timer86
- System Reset88
- Rabbit Interrupt Structure90
  - External Interrupts92
  - Interrupt Vectors: INT0 - Eir,0X00/Int1 - Eir,0X0893
- Bootstrap Operation94
Chapter 8. Memory Mapping and Interface97
- Memory-Mapping Unit97
- Memory Interface Unit99
- Memory Control Unit Registers100
- Allocation of Extended Code and Data102
- How Compiler Compiles to Memory103
Chapter 9. Parallel Ports105
- Parallel Port a106
- Parallel Port B107
- Parallel Port C108
- Parallel Port D109
- Parallel Port E112
Chapter 10. I/O Bank Control Registers115
Chapter 11. Timers117
- Timer a118
  - Timer a I/O Registers119
  - Practical Use of Timer a120
- Timer B121
  - Using Timer B123
Chapter 12. Rabbit Serial Ports125
- Serial Port Register Layout126
- Serial Port Interrupt129
- Transmit Serial Data Timing130
- Receive Serial Data Timing130
- Clocked Serial Ports131
- Clocked Serial Timing134
  - Clocked Serial Timing with Internal Clock134
  - Clocked Serial Timing with External Clock134
- Serial Port Software Suggestions135
Chapter 13. Rabbit Slave Port143
- Hardware Design of Slave Port Interconnection149
- Slave Port Registers149
- Applications and Communications Protocols for Slaves151
  - Slave Applications151
  - Master-Slave Messaging Protocol152
Chapter 14. Rabbit 2000 Clocks155
- Low-Power Design156
- Clock Spectrum Spreader Module156
Chapter 15. AC Timing Specifications157
- Memory Access and I/O Read/Write Times160
- Current Consumption168
Chapter 16. Rabbit BIOS and Virtual Driver171
- The BIOS171
  - BIOS Services171
  - BIOS Assumptions172
- Virtual Driver172
  - Periodic Interrupt172
  - Watchdog Timer Support172
Chapter 17. Other Rabbit Software175
- Power Management Support175
- Reading and Writing I/O Registers176
  - Using Assembly Language176
  - Using Library Functions176
- Shadow Registers177
- Timer and Clock Usage178
Chapter 18. Rabbit Instructions181
- Load Immediate Data184
- Load & Store to Immediate Address184
- 8-Bit Indexed Load and Store184
- 16-Bit Indexed Loads and Stores184
- 16-Bit Load and Store 20-Bit Address185
- Register to Register Moves185
- Exchange Instructions186
- Stack Manipulation Instructions186
- 16-Bit Arithmetic and Logical Ops186
- 8-Bit Arithmetic and Logical Ops187
- 8-Bit Bit Set, Reset and Test188
- 8-Bit Increment and Decrement188
- 8-Bit Fast a Register Operations189
- 8-Bit Shifts and Rotates189
- Instruction Prefixes190
- Block Move Instructions190
- Control Instructions - Jumps and Calls191
- Miscellaneous Instructions191
- Privileged Instructions192
Chapter 19. Differences Rabbit Vs. Z80/Z180 Instructions193
Chapter 20. Instructions in Alphabetical Order with Binary Encoding195
Appendix203
- The Rabbit Programming Port203
- Use of the Programming Port as a Diagnostic/Setup Port204
- Alternate Programming Port204
- Suggested Rabbit Crystal Frequencies205
Appendix207
- Rabbit 2000 Revisions207
- Discussion of Fixes and Improvements209
Notice to Users225
Index227

Other manuals for Rabbit 2000

Designers Handbook45 pages

Instruction & Reference Manual174 pages

Reference Manual120 pages

Getting Started Manual54 pages

Getting Started43 pages