On-Chip Emulation Module
OnCE Trace Logic
MOTOROLA
DSP56309UM/D 10-15
breakpoint logic is reset and that no previous events can affect the new breakpoint event
selected. The breakpoint counter is cleared by a hardware RESET signal.
10.5.6.8
Reserved Bits 12-15
Bits 12Ð15 are reserved for future use. They are read as 0 and should be written with 0 for
future compatibility.
10.6
OnCE TRACE LOGIC
Using the OnCE trace logic, execution of instructions in single or multiple steps is
possible. The OnCE trace logic causes the chip to enter debug mode after the execution
of one or more instructions and wait for OnCE commands from the debug serial port.
The OnCE trace logic block diagram is shown in
Trace mode has a counter associated with it so that more than one instruction can be
executed before returning back to debug mode. The objective of the counter is to allow
the user to take multiple instruction steps real time before entering debug mode. This
feature helps the software developer debug sections of code that do not have a normal
flow or are getting hung up in infinite loops. The OTC also enables the user to count the
number of instructions executed in a code segment.
To enable trace mode, the counter is loaded with a value, the program counter is set to
the start location of the instruction(s) to be executed real time, the TME bit is set in the
Figure 10-8
OnCE Trace Logic Block Diagram
TDI
TDO
TCK
Trace Counter
DEC
End of Instruction
Count = 0
ISTRACE
AA0708
Содержание DSP56309
Страница 25: ...xxii DSP56309UM D MOTOROLA Figure D 25 Port E Registers PCRE PRRE PDRE D 39 ...
Страница 30: ...MOTOROLA DSP56309UM D 1 1 SECTION 1 DSP56309 OVERVIEW ...
Страница 47: ...1 18 DSP56309UM D MOTOROLA DSP56309 Overview DSP56309 Architecture Overview ...
Страница 48: ...MOTOROLA DSP56309UM D 2 1 SECTION 2 SIGNAL CONNECTION DESCRIPTIONS ...
Страница 85: ...2 38 DSP56309UM D MOTOROLA Signal Connection Descriptions OnCE JTAG Interface ...
Страница 86: ...MOTOROLA DSP56309UM D 3 1 SECTION 3 MEMORY CONFIGURATION ...
Страница 104: ...MOTOROLA DSP56309UM D 4 1 SECTION 4 CORE CONFIGURATION ...
Страница 124: ...MOTOROLA DSP56309UM D 5 1 SECTION 5 GENERAL PURPOSE I O ...
Страница 125: ...5 2 DSP56309UM D MOTOROLA General Purpose I O 5 1 INTRODUCTION 5 3 5 2 PROGRAMMING MODEL 5 3 ...
Страница 128: ...MOTOROLA DSP56309UM D 6 1 SECTION 6 HOST INTERFACE HI08 ...
Страница 166: ...MOTOROLA DSP56309UM D 7 1 SECTION 7 ENHANCED SYNCHRONOUS SERIAL INTERFACE ESSI ...
Страница 212: ...MOTOROLA DSP56309UM D 8 1 SECTION 8 SERIAL COMMUNICATION INTERFACE SCI ...
Страница 241: ...8 30 DSP56309UM D MOTOROLA Serial Communication Interface SCI GPIO Signals and Registers ...
Страница 242: ...MOTOROLA DSP56309UM D 9 1 SECTION 9 TRIPLE TIMER MODULE ...
Страница 269: ...9 28 DSP56309UM D MOTOROLA Triple Timer Module Timer Operational Modes ...
Страница 270: ...MOTOROLA DSP56309UM D 10 1 SECTION 10 ON CHIP EMULATION MODULE ...
Страница 302: ...MOTOROLA DSP56309UM D 11 1 SECTION 11 JTAG PORT ...
Страница 369: ...C 22 DSP56309UM D MOTOROLA DSP56309 BSDL Listing ...
Страница 370: ...MOTOROLA DSP56309UM D D 1 APPENDIX D PROGRAMMING REFERENCE ...
Страница 405: ......
Страница 409: ......