Freescale Semiconductor MMDS0508 4.10.4 Viewing Collected Data

MMDS Target Component

4.10 Bus Analyzer

4–47MMDS0508 Target Interface

4.10.3.7 Recording Bus Data

When data collection begins, the bus analyzer starts recording bus data into the buffer.

When it reaches the end of the buffer, the Bus analyzer wraps around to the first buffer

frame and continues recording. This process continues until you disarm the analyzer,

until the analyzer records the specified number of frames, or until the analyzer records

the specified number of post-trigger cycles following the trigger event.

4.10.3.8 Trigger Event

When the analyzer detects a trigger event, it latches the event cycle into the buffer and

continues recording data until it collects the specified number of post-trigger cycles.

Then the bus analyzer stops collecting data, and its status changes to Disarmed.

At the same time the analyzer records the first post-trigger cycle, it automatically

begins searching for the next trigger event.

Subsequent events can occur while the bus analyzer collects post-trigger cycles for the

first event. In such a case, the analyzer continues collecting post-trigger cycles, but

marks the cycles for the subsequent events.

4.10.4 Viewing Collected Data

4.10.4.1 View Cycles

The bus analyzer provides several views of the collected cycles. At the end of cycle

collection, the trace buffer contains as many as 8192 of the most recently stored

frames. Those that have the highest numbers usually are the post-trigger frames. Those

that have the lowest numbers are the frames stored before the trigger occurred, if any.

When the bus analyzer is not in the Analyzing state, it displays data in the Trace

window.

4.10.4.2 Textual, Graphical or Instructions

To specify the type of bus-data display, select Textual, Graphical, or Instructions from

the Trace popup menu.

NOTE If the sequencer did not specify collection of all frames (for example,

if it specified an events-only mode) the menu may not include the

Instructions selection.

Freescale Semiconductor, Inc.

For More Information: www.freescale.com

Contents

Main How to Contact Metrowerks Table of Contents 1 General Description 5 2Installation 9 3 Connector Information 17 4 MMDS Target Component 23 A Appendix 59 General Description 1.1 Introduction 1.2 MMDS Features 1.3 System Components Page Page Installation Installation 2.1 Introduction Page 2.2 Configuring the Platform Board 2.2.1 Factory Test Header (J1) 2.2.2 Port Voltage Control Headers (J2J4) 2.3 Installing the EM 2.4 Removing the EM 2.5 Making Cable Connections 2.5.1 Host Computer Connection 2.5.2 Bus State Analyzer Connection 2.5.3 Target Cable Connection 2.5.4 Power Connection Page Connector Information 3.1 Introduction 3.2 Reset Switch 3.3 RS232 Serial Connector 3.4 Logic Cables and Connectors Page 3.5 Power Supply Fuse Replacement Page Page MMDS Target Component 4.1 Introduction 4.2 General 4.2.1 MMDS0508 4.2.2 Configuration 4.3 Definitions, Acronyms and Abbreviations 4.4 Interfacing Your System and the Target 4.5 Loading the MMDS0508 Target 4.6 Communication Configuration 4.6.1 Communication Device Specification 4.6.2 Data Format 4.7 The Debugger Status Bar for the MMDS 4.8 MMDS0508 Menu Entries 4.8.1 Communication Baud Rate 4.8.1.1 Communication 4.8.1.2 Maximum Baud Rate 4.8.1.3 Show Protocol 4.8.2 Memory Configuration 4.8.3 Personality (.MEM) Files Page 4.8.3.1 Dual-Port RAM 4.8.3.2 Memory 4.8.4 Signals Emulation 4.8.4.1 MCU Clock 4.8.4.2 Reset 4.8.5 Bus Tracing 4.9 Default Target Setup 4.9.1 Motorola ESL Parameters 4.9.1.1 COMDEV 4.9.1.2 BAUDRATE 1200, 2400, 4800, 9600, 19200, 28800, 38400, 57600, 115200. 4.10 Bus Analyzer 4.10.1 Introduction to the Bus Analyzer 4.10.1.1 Watchpoints 4.10.1.2 Trace Modes 4.10.1.3 Trace Buffer 4.10.2 Using the Bus Analyzer 4.10.2.1 The Trace window popup menu 4.10.2.2 Trigger Setup 4.10.2.3 Sequencer Setup 4.10.2.4 Non-Triggered Modes 4.10.2.5 Counted Modes 4.10.2.6 Triggered Modes/Sequential Event Mode 4.10.2.7 Counted/Sequential Recording Mode 4.10.2.8 Time Tag Clock Setup 4.10.3 Collecting Data 4.10.3.7 Recording Bus Data 4.10.3.8 Trigger Event 4.10.4 Viewing Collected Data 4.10.4.1 View Cycles 4.10.4.2 Textual, Graphical or Instructions 4.10.4.3 Textual Display 4.10.4.4 Instructions Only Display 4.10.4.5 Graphical Display Page Page 4.10.5 Scrolling the Display 4.10.5.1 Search for a Frame 4.10.5.2 Search for Events 4.10.5.3 Search for a Pattern Page 4.10.6 Dumping the Bus analyzer data to a file 4.10.6.1 Dump File Page A Appendix A.1 MMDS Commands A.1.1 Baud Rate Command BAUD A.1.1.1 Short Description A.1.2 Trigger Commands CT A.1.2.1 Short Description A.1.2.2 Syntax A.1.2.3 Description ST A.1.2.4 Short Description A.1.2.5 Syntax A.1.2.6 Description Page Page TD A.1.2.7 Short Description A.1.2.8 Syntax A.1.2.9 Description TE A.1.2.10 Short Description A.1.2.11 Syntax A.1.2.12 Description A.1.3 Bus Analyzer Commands Page Page A.1.3.15 Description LT A.1.3.16 Short Description A.1.3.17 Syntax A.1.3.18 Description SC A.1.3.19 Short Description A.1.3.20 Syntax A.1.3.21 Description SP A.1.3.22 Short Description A.1.3.23 Description A.1.3.24 Syntax Page Page SQ A.1.3.25 Short Description A.1.3.26 Syntax A.1.3.27 Description TT A.1.3.28 Short Description A.1.3.29 Syntax A.1.3.30 Description VA A.1.3.31 Short Description A.1.3.32 Syntax A.1.3.33 Description A.1.4 Target Signal Emulation Commands A.1.5 Reset Commands A.1.6 Other Commands A.1.6.3 Description MEM A.1.6.4 Short Description A.1.6.5 Syntax A.1.6.6 Description OSC A.1.6.7 Short Description A.1.6.8 Syntax A.1.6.9 Description Page A.1.6.15 Description Index Symbols A B C M N O P R T V W Z