Freescale Semiconductor Metrowerks CodeWarrior Manuale utente

Freescale Semiconductor Company

CodeWarrior™

USB TAP Users Guide

Revised 10 March 2005

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or other countries. CodeWarrior is a trademark or registered trademark of Metrowerks Corporation in the United States

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Metrowerks reserves the right to make changes to any product described or referred to in this document without further

notice. Metrowerks makes no warranty, representation or guarantee regarding the merchantability or fitness of its prod-

ucts for any particular purpose, nor does Metrowerks assume any liability arising out of the application or use of any

product described herein and specifically disclaims any and all liability. Metrowerks software is not authorized for

and has not been designed, tested, manufactured, or intended for use in developing applications where the fail-

ure, malfunction, or any inaccuracy of the application carries a risk of death, serious bodily injury, or damage

to tangible property, including, but not limited to, use in factory control systems, medical devices or facilities,

nuclear facilities, aircraft navigation or communication, emergency systems, or other applications with a simi-

lar degree of potential hazard.

How to Contact Metrowerks

Corporate Headquarters Metrowerks Corporation

7700 West Parmer Lane

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World Wide Web http://www.metrowerks.com

Sales United States Voice: 800-377-5416

United States Fax: 512-996-4910

International Voice: +1-512-996-5300

Email: [email protected]

Technical Support United States Voice: 800-377-5416

International Voice: +1-512-996-5300

Email: [email protected]

USB TAP Users Guide

Table of Contents

1 Introducing the CodeWarrior™ USB TAP Emulator 5

What is the USB TAP Emulator? . . . . . . . . . . . . . . . . . . . . . 5

Product Highlights . . . . . . . . . . . . . . . . . . . . . . . . . 6

The Debugging Environment . . . . . . . . . . . . . . . . . . . . . 7

USB TAP Emulator Benefits . . . . . . . . . . . . . . . . . . . . . 7

Target Connections . . . . . . . . . . . . . . . . . . . . . . . . . 7

Operating Requirements . . . . . . . . . . . . . . . . . . . . . . . . 8

Standard Electrostatic Precautions . . . . . . . . . . . . . . . . . . . 8

Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . 8

Operating Temperature. . . . . . . . . . . . . . . . . . . . . . . . 8

Target Requirements. . . . . . . . . . . . . . . . . . . . . . . . . 9

Related Documentation. . . . . . . . . . . . . . . . . . . . . . . . . 9

2 Setting up the USB TAP Emulator 11

Unpacking the USB TAP Emulator . . . . . . . . . . . . . . . . . . . 11

Identifying the Components . . . . . . . . . . . . . . . . . . . . . . 12

Installing the CodeWarrior USB TAP Device Drivers . . . . . . . . . . . . 12

Connecting to the Target and your Host Computer . . . . . . . . . . . . . 14

Debug Port Connector Information . . . . . . . . . . . . . . . . . . 14

Target Connection . . . . . . . . . . . . . . . . . . . . . . . . 15

Setting the Debug Port Clock Frequency. . . . . . . . . . . . . . . . 16

Connecting to your Host Computer . . . . . . . . . . . . . . . . . . 16

What To Do Next . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3 Using the USB TAP 19

USB TAP System Startup . . . . . . . . . . . . . . . . . . . . . . . 19

Notes on Using the USB TAP . . . . . . . . . . . . . . . . . . . . 19

Run/Pause/Mixed Mode States . . . . . . . . . . . . . . . . . . . 20

Breakpoints in Exception/Interrupt Handlers . . . . . . . . . . . . . . 20

Table of Contents

USB TAP Users Guide

4 Hardware Specifications 21

Connectors and LEDs . . . . . . . . . . . . . . . . . . . . . . . . 21

Run/Pause Indicator . . . . . . . . . . . . . . . . . . . . . . . . 22

Transmit/Receive Indicator . . . . . . . . . . . . . . . . . . . . . 22

USB Connector . . . . . . . . . . . . . . . . . . . . . . . . . 23

Debug Port Connector . . . . . . . . . . . . . . . . . . . . . . . 23

USB TAP Specifications . . . . . . . . . . . . . . . . . . . . . . . 24

Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . 24

Physical Considerations . . . . . . . . . . . . . . . . . . . . . . 25

A JTAG/COP Connector Information 27

B DPI Connector Information 33

C BDM Connector Information 37

D OnCE Connector Information 43

E ARM JTAG Connector Information 47

F USB TAP Firmware (Loader) 53

The USB TAP Internal Software Overview . . . . . . . . . . . . . . . . 53

Loader Software . . . . . . . . . . . . . . . . . . . . . . . . . 53

Dispatcher Software . . . . . . . . . . . . . . . . . . . . . . . . 53

Reprogramming the USB TAP Firmware Image . . . . . . . . . . . . . . 54

What To Do Next . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Index 57

USB TAP Users Guide

Introducing the

CodeWarrior™ USB TAP

Emulator

The CodeWarrior USB TAP emulator is a cost-effective tool that helps you develop

and debug a number of processors and microcontrollers.

This chapter introduces you to the USB TAP emulator.

The sections are:

•What is the USB TAP Emulator?

•Operating Requirements

•Related Documentation

What is the USB TAP Emulator?

The USB TAP emulator uses advanced emulation technology to provide control of

and visibility into your target system. Combined with the CodeWarrior IDE, the USB

TAP emulator (Figure 1.1) speeds the debugging process by letting you interactively

control and examine the state of your target system.

Introducing the CodeWarrior™ USB TAP Emulator

What is the USB TAP Emulator?

USB TAP Users Guide

Figure 1.1 USB TAP for ARM®JTAG with USB 2.0 Cable

Product Highlights

The USB TAP emulator has these features:

• Supports the following systems: PowerPC™ processors, ARM®processors,

ColdFire™ processors, StarCore™ processors, 56800 Hybrid Controllers

(processors and microcontrollers), and RCF base-band controllers.

• Supports all CPU core speeds.

• Lets you control and debug software running in-target, with minimal intrusion

into target operation.

• Lets you debug code in cache, ROM, RAM, and flash memory.

• Provides high performance:

– Split-second single-step execution.

– Capable of download speeds greater than 12 MB per minute from host to

target.

NOTE The actual download speed depends on the target processor, the

debug port’s clock frequency, the network speed, and the debugger.

• Supports one USB 2.0 connection.

• Supports both big and little endian byte-order.

• Automatically supports target signal levels from 1.8V to 3.3V.

Introducing the CodeWarrior™ USB TAP Emulator

What is the USB TAP Emulator?

USB TAP Users Guide

• Software debug capabilities including:

– Controlling instruction execution.

– Display and modify target memory.

– Examine and modify any processor registers.

– Run to breakpoints in ROM, RAM, or flash memory.

– Single-step through source and assembly language code views.

– Single-step into, over, or out of functions.

The Debugging Environment

The USB TAP emulator works with the CodeWarrior™ debugger. The debugger has

been integrated with the USB TAP emulator to give you control over the emulation

functions and your target.

USB TAP Emulator Benefits

The USB TAP emulator provides these key benefits:

•Visibility: The USB TAP emulator makes it possible for you to observe registers

and the current state of target memory. You can halt program execution at

predefined states and examine the data for a particular program state.

•Control: You can conveniently control the state of the target system by

downloading code, manually modifying processor registers and memory, single-

stepping through the code, or setting breakpoints.

Target Connections

The USB TAP connects to your target through the standard debug port for the

processor family. Each USB TAP supports a single target connection. The USB TAPs

are available in the following versions:

• JTAG/COP, for PowerPC™ targets

• DPI, for PowerPC™ 5xx and 8xx targets

• BDM, for ColdFire™ targets

• OnCE, for StarCore™, 56800 Hybrid Controllers, RCF base-band, and

PowerPC™ 5500 targets

•ARM®JTAG, for i.MX and MAC7100 targets

For more details see “Connecting to the Target and your Host Computer” on page 13.

Introducing the CodeWarrior™ USB TAP Emulator

Operating Requirements

USB TAP Users Guide

Operating Requirements

Before setting up your system, you should make sure that the operating environment is

prepared.

Standard Electrostatic Precautions

This instrument contains static-sensitive components that are subject to damage from

electrostatic discharge. Use standard ESD precautions when transporting, handling, or

using the instrument and the target, when connecting/disconnecting the instrument and

the target, and when removing the cover of the instrument.

We recommend that you use the following precautions:

• Use wrist straps or heel bands with a 1 MΩresistor connected to ground.

• On the work surface and floor, use static conductive mats with a 1 MΩresistor

connected to ground.

• Keep high static-producing items, such as non-ESD-approved plastics, tape and

packaging foam, away from the instrument and the target.

The above precautions should be considered as minimum requirements for a static-

controlled environment.

Electrical Requirements

The USB TAP emulator is powered through the USB cable and does not use an

external power supply. The USB TAP emulator is designed to be plugged directly into

a host computer, but also can work with self-powered hubs. Bus powered hubs may be

unable to provide sufficient power for the USB TAP, which requires 200 mA. If

insufficient power is available, your host operating system will indicate this failure

and the USB TAP emulator will go into a low power suspend mode. If your hub is not

able to provide sufficient power, connect the USB TAP directly to your host PC, or

purchase a self-powered USB hub.

Operating Temperature

The USB TAP emulator can operate in a temperature range of 0 to 40 °C (32 to 104

°F).

Introducing the CodeWarrior™ USB TAP Emulator

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