Freescale Semiconductor NXP CodeWarrior USB TAP Manuale utente

CodeWarrior™

USB TAP Users Guide

Revised: 11 November 2005

USB_TAP.book Page 1 T hursd a y , November10,2005 2:27 PM

Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. CodeWarrior is a trademark or reg-

istered trademark of Freescale Semiconductor, Inc. in the United States and/or other countries. All other product or ser-

vice names are the property of their respective owners.

Information in this document is provided solely to enable system and software implementers to use Freescale Semicon-

ductor products. There are no express or implied copyright licenses granted hereunder to design or fabricate any inte-

grated circuits or integrated circuits based on the information in this document.

Freescale Semiconductor reserves the right to make changes without further notice to any products herein. Freescale

Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any partic-

ular purpose, nor does Freescale Semiconductor assume any liability arising out of the application or use of any product

or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental dam-

ages. “Typical” parameters that may be provided in Freescale Semiconductor data sheets and/or specifications can and

do vary in different applications and actual performance may vary over time. All operating parameters, including “Typ-

icals”, must be validated for each customer application by customer's technical experts. Freescale Semiconductor does

not convey any license under its patent rights nor the rights of others. Freescale Semiconductor products are not de-

signed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other

applications intended to support or sustain life, or for any other application in which the failure of the Freescale Semi-

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How to Contact Us

Corporate Headquarters Freescale Semiconductor, Inc.

7700 West Parmer Lane

Austin, TX 78729

U.S.A.

World Wide Web http://www.freescale.com/codewarrior

Technical Support http://www.freescale.com/support

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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 Connecting to the Target and your Host Computer 11

Debug Port Connector Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Target Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Setting the Debug Port Clock Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Connecting to your Host Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

What To Do Next . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3 Using the USB TAP 15

USB TAP System Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Notes on Using the USB TAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Run/Pause/Mixed Mode States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Breakpoints in Exception/Interrupt Handlers . . . . . . . . . . . . . . . . . . . . . . . . 16

4 Hardware Specifications 17

Connectors and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Run/Pause Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Transmit/Receive Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

USB Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Debug Port Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

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Table of Contents

USB TAP Users Guide

USB TAP Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Physical Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

A JTAG/COP Connector Information 21

B DPI Connector Information 27

C BDM Connector Information 31

D OnCE Connector Information 37

E ARM® JTAG Connector Information 41

F USB TAP Firmware (Loader) 47

The USB TAP Internal Software Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Loader Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Dispatcher Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Reprogramming the USB TAP Firmware Image . . . . . . . . . . . . . . . . . . . . . . . .48

What To Do Next . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

G Troubleshooting 51

Index 53

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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.

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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 Windows®NT/2000/XP and the following Linux operating systems: Red

Hat® Linux®version 8.0 or 9.0, Fedora™ Core 3 or Core 4, and

Mandrake®Linux®10.0.

• 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.

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Introducing the CodeWarrior™ USB TAP Emulator

What is the USB TAP Emulator?

USB TAP Users Guide

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

• 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™ 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.

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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).

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Introducing the CodeWarrior™ USB TAP Emulator

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