Motorola Command One Manuel d'utilisateur télécharger pdf (Page 11)

Motorola Functional Description 2-1

Chapter 2

Functional Description

The Suite56 Parallel Port Command Converter interacts with the target DSP with the

assistance of the Suite56 Software Development Tools Debugger and the user's host

system. The host system interface consists of a program written in the C language that

sends commands via a parallel port to the Suite56 Parallel Port Command Converter.

Commands entered from the host system's keyboard are parsed, and a series of low-level

command packets are sent to the Suite56 Parallel Port Command Converter. The Suite56

Parallel Port Command Converter translates these low-level command packets into one or

more JTAG signals and OnCE commands that are transferred to the target DSP via its

JTAG port. The JTAG port provides the necessary control to the target so programs may

be loaded or saved, registers read or modified, and hardware breakpoints set or cleared.

2.1 Command Converter Interface Connector

The target application board must have a 14-pin connector to interface to the command

converter controller. This interface comprises eight signals and three ground connections

on a 7-row

2-column male pin header, which are spaced on one-tenth inch centers as

illustrated in Figure 2-1 on page 2-1.

Figure 2-1. Target V

System JTAG/OnCE™ Interface Connector

TDI/DSI

TDO/DSO

TCK/DSCK

CC_RESET

KEY (No Connect)

GND

Vcc

DSP

RESET

TARGET

GND

10K

TOP VIEW

TARGET V

DEZ

10K

RESET

CIRCUIT

TMS0 (For JTAG Devices)

TRST

(For JTAG Devices)

DSP

TRST

Vcc

10K

AA2037

(No Connect)

eescale S

emiconduct

, I

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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Motorola Command One Manuel d'utilisateur Page 11

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