Cypress CY62158EV30 Instrukcja Użytkownika Pobierz pdf (Strona 23)

September 5, 2010 23

Using the In-Circuit Debugger Interface

The Stellaris® LM3S9B96 Development Kit can operate as an In-Circuit Debugger Interface

(ICDI). ICDI acts as a USB to the JTAG/SWD adaptor, allowing debugging of any external target

board that uses a Stellaris microcontroller. See “Debugging Modes” on page 16 for a description of

how to enter ICDI Out mode.

Figure 4-1. ICD Interface Out Mode

The debug interface operates in either serial-wire debug (SWD) or JTAG mode, depending on the

configuration in the debugger IDE.

The IDE/debugger does not distinguish between the on-board Stellaris microcontroller and an

external Stellaris microcontroller. The only requirement is that the correct Stellaris device is

selected in the project configuration.

The Stellaris target board should have a 2x10 0.1” pin header with signals as indicated in

Table C-1 on page 35. This applies to both an external Stellaris microcontroller target (Debug

Output mode) and to external JTAG/SWD debuggers (Debug Input mode).

ICDI does not control RST (device reset) or TRST (test reset) signals. Both reset functions are

implemented as commands over JTAG/SWD, so these signals are usually not necessary.

LM3S9B96 Dev Board

Target

Board

Stellaris

MCU

USB

JTAG/

SWD

PC with IDE/

debugger

Stellaris

MCU

JTAG or SWD connects to the

external microcontroller

Remove jumpers to use ICDI Out Feature

TC K

TMS

TDI

TDO

Target

Cable

VDD

+3 .3 V

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Cypress CY62158EV30 Instrukcja Użytkownika Strona 23