Connecting The Target System; Power-On Sequence; Verifying Target Device Connection; Problems - Segger J-Link User Manual

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5.1

Connecting the target system

5.1.1

Power-on sequence

In general, J-Link / J-Trace should be powered on before connecting it with the target
device. That means you should first connect J-Link / J-Trace with the host system via
USB and then connect J-Link / J-Trace with the target device via JTAG. Power-on the
device after you connected J-Link / J-Trace to it.
5.1.2

Verifying target device connection

If the USB driver is working properly and your J-Link / J-Trace is connected with the
host system, you may connect J-Link / J-Trace to your target hardware. Then start
JLink.exe which should now display the normal J-Link / J-Trace related information
and in addition to that it should report that it found a JTAG target and the target's
core ID. The screenshot below shows the output of JLink.exe. As can be seen, it
reports a J-Link with one JTAG device connected.
5.1.3

Problems

If you experience problems with any of the steps described above, read the chapter
Support and FAQs on page 305 for troubleshooting tips. If you still do not find appro-
priate help there and your J-Link / J-Trace is an original SEGGER product, you can
contact SEGGER support via e-mail. Provide the necessary information about your
target processor, board etc. and we will try to solve your problem. A checklist of the
required information together with the contact information can be found in chapter
Support and FAQs on page 305 as well.
J-Link / J-Trace (UM08001)
CHAPTER 5
© 2004-2013 SEGGER Microcontroller GmbH & Co. KG
Working with J-Link and J-Trace