AT91SAM7X512 datasheet(45/687 Pages) ATMEL

Part #	AT91SAM7X512

Description	AT91 ARM Thumb-based Microcontrollers

PDF	687 Pages

Scroll/Zoom	100%

Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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6120H–ATARM–17-Feb-09

AT91SAM7X512/256/128 Preliminary

12. Debug and Test Features

12.1

Description

The AT91SAM7X Series features a number of complementary debug and test capabilities. A

common JTAG/ICE (In-Circuit Emulator) port is used for standard debugging functions, such as

downloading code and single-stepping through programs. The Debug Unit provides a two-pin

UART that can be used to upload an application into internal SRAM. It manages the interrupt

handling of the internal COMMTX and COMMRX signals that trace the activity of the Debug

Communication Channel.

A set of dedicated debug and test input/output pins gives direct access to these capabilities from

a PC-based test environment.

12.2

Block Diagram

Figure 12-1. Debug and Test Block Diagram

ICE

PDC

DBGU

DRXD

DTXD

TST

TMS

TCK

TDI

JTAGSEL

TDO

Boundary

TAP

ICE/JTAG

TAP

ARM7TDMI

Reset

and

Test

POR

AT91SAM7X512 Datasheet(PDF) 45 Page - ATMEL Corporation