MAC7200 datasheet(12/976 Pages) FREESCALE

12 / 976 page

MAC7200 Microcontroller Family Reference Manual, Rev. 2

xii

Freescale Semiconductor

11.11.2.1.4

BTM in Thumb mode ..........................................................................................169

11.11.2.2

Branch Trace Message Formats (History and Traditional)......................................169

11.11.2.2.1

Indirect Branch Messages (History) ....................................................................169

11.11.2.2.2

Indirect Branch Messages (Traditional) ..............................................................170

11.11.2.2.3

Direct Branch Messages (Traditional).................................................................170

11.11.2.2.4

Resource Full Messages ......................................................................................170

11.11.2.2.5

Program Correlation Messages............................................................................171

11.11.2.2.6

BTM Overflow Error Messages ..........................................................................171

11.11.2.2.7

Program Trace Synchronization Messages..........................................................171

11.11.2.3

BTM Operation........................................................................................................173

11.11.2.3.1

Enabling Program Trace ......................................................................................173

11.11.2.3.2

Addressing ...........................................................................................................174

11.11.2.3.3

Branch/Predicate Instruction History (HIST)......................................................174

11.11.2.3.4

Sequential Instruction Count (I-CNT) .................................................................175

11.11.2.3.5

Program Trace Queueing .....................................................................................175

11.11.2.4

Program Trace Timing Diagrams (2 MDO / 1 MSEO configuration).....................175

11.11.3

Data Trace ....................................................................................................................176

11.11.3.1

Data Trace Messaging (DTM) .................................................................................176

11.11.3.2

DTM Message Formats ...........................................................................................177

11.11.3.2.1

Data Write Messages ...........................................................................................177

11.11.3.2.2

Data Read Messages ............................................................................................177

11.11.3.2.3

DTM Overflow Error Messages ..........................................................................177

11.11.3.2.4

Data Trace Synchronization Messages ................................................................178

11.11.3.3

DTM Operation .......................................................................................................179

11.11.3.3.1

Enabling Data Trace Messaging ..........................................................................179

11.11.3.3.2

DTM Queueing....................................................................................................179

11.11.3.3.3

Relative Addressing.............................................................................................180

11.11.3.3.4

Data Trace Windowing ........................................................................................180

11.11.3.3.5

ARM7 Bus Cycle Cases ......................................................................................180

11.11.3.4

Data Trace Timing Diagrams (8 MDO / 2 MSEO configuration)...........................180

11.11.4

Watchpoint Units .........................................................................................................181

11.11.4.1

Watchpoint Generation ............................................................................................181

11.11.4.1.1

Internal Watchpoint Units 1 and 2 .......................................................................181

11.11.4.1.2

Internal Watchpoint Units 3 - 6 ...........................................................................182

11.11.4.1.3

ARM7 Watchpoints .............................................................................................182

11.11.4.2

Processor Breakpoints .............................................................................................182

11.11.4.3

Watchpoint Messaging (WPM) ...............................................................................182

11.11.4.3.1

Watchpoint Message ............................................................................................182

11.11.4.4

Watchpoint Error Message.......................................................................................183

11.11.4.5

Watchpoint Timing Diagram (2 MDO / 1 MSEO configuration)............................184

11.11.5

Read/Write Access.......................................................................................................184

11.11.5.1

Functional Description.............................................................................................184

11.11.5.2

Read/Write Access to Internal Nexus Registers ......................................................184

11.11.5.3

Memory Mapped Register Access via JTAG ..........................................................185

11.11.5.3.1

Single Write Access.............................................................................................185

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