Motorola DSP56305 Manuel d'utilisateur Page 100
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- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
MOTOROLA Optimizing DSP56300/DSP56600 Applications B-1
This section
describes way to
optimize the
application for
minimal power
consumption.
Appendix B
DEBUG AND TEST SUPPORT
The DSP56300 and DSP56600 families provide board and chip-level
testing capability through the On-Chip Emulation (OnCE) module
and the Test Access Port (TAP) commonly referred to as the JTAG
port. These two ports are both accessed through the JTAG port pins.
The DE
pin is the only direct access to the OnCE module.
The presence of the JTAG interface allows the user to insert the DSP
chip into a target system while retaining debug control. This
capability is especially important for high speed devices, because it
eliminates the need for a costly cable to bring out the footprint of the
chip, as required by a traditional emulator system.
B.1 OnCE PORT FEATURES
The OnCE port is a Motorola-designed module used in DSP chips to
debug application software used with the chip. The port allows
non-intrusive interaction with the DSP and is accessible through the
pins of the JTAG interface. The OnCE module supports a special
debug environment that makes it possible to examine the contents
of registers, memory, or on-chip peripheral. This avoids sacrificing
other user-accessible on-chip resources to perform debugging. The
capabilities of the OnCE Port include:
• Generate Debug Event on a program memory address (fetch,
read, write or access)
• Generate Debug Event on a data memory address (read,
write, or access)
• Generate Debug Event on an on-chip peripheral register
access (read, write or access)
• Generate Debug Event using a special instruction
• Display/modify the contents of any DSP core register
• Display/modify the contents of any peripheral
memory-mapped registers
• Display/modify any desired sections of program or data
memory
- DSP56300/DSP56600 1
- Digital Signal 1
- Processors 1
- TABLE OF CONTENTS 2
- LIST OF FIGURES 6
- LIST OF TABLES 7
- INTRODUCTION 8
- 1.2 DSP56600 CORE FAMILY 9
- Table 1-1 11
- Introduction 12
- Description and Use 13
- Application Note Structure 14
- 1.4.3 Appendixes 15
- DATA OPERATIONS 16
- DSP56300 Family Manual 21
- 2.3 THE MAX INSTRUCTION 22
- 2.4 USING THE BARREL SHIFTER 23
- Data Operations 24
- Using the barrel shifter 24
- DSP56300 26
- DSP56600 Family 26
- Double precision arithmetic 27
- INSTRUCTIONS 28
- PROGRAM CONTROL 30
- Program Control 31
- Hardware Loops 31
- 3.2 THE HARDWARE STACK 32
- DSP56600 Family Manuals 35
- 3.3 USING THE STACK EXTENSION 36
- Using the Stack Extension 37
- EXTENSION 39
- Conditional DALU Instructions 40
- 3.6 PC RELATIVE INSTRUCTIONS 42
- DSP56600 Family Manual 43
- 3.7 USING FAST INTERRUPTS 46
- Using Fast Interrupts 48
- USING THE DMA 50
- Using the DMA 51
- Using Slow, Low-Cost Memories 54
- 4.4 SERVICING A PERIPHERAL 55
- Servicing a Peripheral 56
- Section 5 62
- 5.1 THE INSTRUCTION CACHE 62
- 5.1.1 Cache Sectors 64
- The Instruction Cache 65
- 5.1.3 Cache Burst Mode 67
- 5.2 MEMORY SWITCH 70
- Memory Switch 71
- 5.3 USING THE BOOTSTRAP ROM 72
- Using the Bootstrap ROM 73
- PIPELINE INTERLOCKS 74
- Pipeline Interlocks 75
- Data ALU Pipeline Interlocks 75
- DSP56000 Family Manual 76
- INTERLOCKS 80
- Interlocks 80
- 6.3 STACK EXTENSION DELAYS 81
- Interlocks? 83
- COMPACT OPCODE USE 86
- Instructions 87
- Compact Opcode Use 89
- Cycle Count of an Instruction 89
- 7.2 ADDRESSING MODES 90
- 7.2.2 Short Addressing Mode 91
- 7.2.3 Short Immediate Mode 91
- 7.2.5 Register Addressing 92
- 7.2.6 Word Count 92
- 7.3 PERIPHERAL ADDRESSING 92
- 7.4 SPECIAL INSTRUCTIONS 93
- 7.4.1 Dual Data Spaces 93
- 7.4.3 Clearing Registers 94
- Special Instructions 95
- SAVING POWER 96
- A.1.2 Stop Standby Mode 97
- A.1.3 Low-Power Clock Divider 97
- Saving Power 98
- Disabling Functional Blocks 98
- DEBUG AND TEST SUPPORT 100
- B.2 JTAG PORT FEATURES 101
- B.3 ADDRESS TRACING 102
- Debug and Test Support 103
- Address Tracing 103
- USING THE PROFILER 104
- C.3 THE PROFILING REPORT 105
- C.3.1 Basic Report 105
- C.3.2 Symbol Report 106
- Using the Profiler 107
- C.3.4 Code Coverage Report 108
- C.3.5 Basic Subroutine Report 109
- C.3.8 Subroutine Call Report 111
- C.4 USING THE PROFILE REPORT 111
- How to reach us: 112
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