8.12.00 J-LINK ARM-PRO Segger Microcontroller Systems, 8.12.00 J-LINK ARM-PRO Datasheet - Page 207
8.12.00 J-LINK ARM-PRO
Manufacturer Part Number
8.12.00 J-LINK ARM-PRO
Description
JTAG EMULATOR USB ETHERNET ARM
Manufacturer
Segger Microcontroller Systems
Type
Emulatorr
Specifications of 8.12.00 J-LINK ARM-PRO
Contents
Emulation Module
For Use With/related Products
ARM7, ARM9, ARM11, Cortex
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
8.12.00 J-LINK ARM-PRO
899-1007
899-1007
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11.2 Troubleshooting
11.2.1 General procedure
11.2.2 Typical problem scenarios
J-Link / J-Trace (UM08001)
If you experience problems with J-Link / J-Trace, you should follow the steps below to
solve these problems:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. Re-connect J-Link / J-Trace with the host system (attach the USB cable).
11. Enable power supply on the target.
12. Start JLink.exe .
13. If JLink.exe displays the J-Link / J-Trace serial number and the target proces-
14. If JLink.exe is unable to read the target processor’s core ID you should analyze
15. If the problem persists and you own an original product (not an OEM version),
J-Link / J-Trace LED is off
Meaning:
The USB connection does not work.
Remedy:
Check the USB connection. Try to re-initialize J-Link / J-Trace by disconnecting and
reconnecting it. Make sure that the connectors are firmly attached. Check the cable
connections on your J-Link / J-Trace and the host computer. If this does not solve the
problem, check if your cable is defect. If the USB cable is ok, try a different host
computer.
J-Link / J-Trace LED is flashing at a high frequency
Meaning:
J-Link / J-Trace could not be enumerated by the USB controller.
Most likely reasons:
a.) Another program is already using J-Link / J-Trace.
b.) The J-Link USB driver does not work correctly.
Remedy:
a.) Close all running applications and try to reinitialize J-Link / J-Trace by disconnect-
ing and reconnecting it.
b.) If the LED blinks permanently, check the correct installation of the J-Link USB
driver. Deinstall and reinstall the driver as shown in chapter Setup on page 61.
Close all running applications on your host system.
Disconnect the J-Link / J-Trace device from USB.
Disable power supply on the target.
Re-connect J-Link / J-Trace with the host system (attach USB cable).
Enable power supply on the target.
Try your target application again. If the problem remains continue the following
procedure.
Close all running applications on your host system again.
Disconnect the J-Link / J-Trace device from USB.
Disable power supply on the target.
sor’s core ID, the J-Link / J-Trace is working properly and cannot be the cause of
your problem.
the communication between your target and J-Link / J-Trace with a logic analyzer
or oscilloscope. Follow the instructions in section 11.3.
see section Contacting support on page 210.
© 2004-2011 SEGGER Microcontroller GmbH & Co. KG
207
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