C H A P T E R I I - J T A G I C E I N T E R F A C E S

SEGGER MICROCONTROLLER SYSTEME GMBH

J-LINK

CONTACTS

GERMANY

Segger Microcontroller

Systeme GmbH

Heinrich-Hertz-Str. 5

40721 Hilden - Germany

Phone: (+49) 2103-2878-0

Fax: (+49) 2103-2878-28

e-mail: info@segger.com

USA

Segger Microcontroller

Systems LLC

9 Bartherick Road

Westminster, MA 01473 - USA

Phone: (+1) 978-874-0299

Fax: (+1) 978-874-0599

e-mail: shane@segger.com

J-Linkis a small USB to JTAG debug device, designed for ARM cores. It connects via USB to the Windows PC host.

J-Mem, a small (app. 50 kb) stand-alone application for Microsoft Windows 2000 and Windows XP is included. It requires a J-Linkconnected to the USB port and an ARM system connected to J-Linkvia the JTAG interface.

J-Mem displays memory contents of ARM- systems and allows modifications of RAM and SFRs (Special Function Registers) while target is running. It makes it possible to look into the memory of an ARM chip at run time; RAM can be modified and SFRs can be written. The type of access for both read and write access can be selected to be 8/16/32 bit.

It works nicely when modifying SFRs, especially because it writes the SFR only after the complete value has been entered.

J-Flash is a PC software running on Windows 2000/XP systems, which enables you to program your Flash EEPROM devices via the On-Chip Debug connector (JTAG) on your target system.

A J-Linkdevice, which connects via USB interface with the PC, is needed. J-Flash

works with any ARM7/9 system and supports all common external flashes, as well as the programming of internal flash of ARM microcontrollers.

It allows you to ERASE, FILL, Program BLANK CHECK, CHECKSUM, UPLOAD flash content, and VIEW MEMORY functions of the software with your flash devices. Purchasing a license will turn off the time limitation.

•Any ARM7/9 core supported, including Thumb mode

•Download speed up to150kb/s

•No power supply required, powered through USB

•Auto speed recognition

•All JTAG signals can be monitored, target voltage can be measured

•Support for multi core debugging

•RDI flash breakpoints available

•RDI software available

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