J-LINK communication Error

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  • J-LINK communication Error

    Hi All,


    I am using STR735 MCU and J-Link-ks(Yellow one). Whenever I try to connect with target it gives following error "Bad J-Tag communication: write IR: expected x01 got x0f ( TAP command :15) @ Off x05"

    Please help me to know what could be the cause??

    Another question: If I use vcc-5V target, do I need to use segger 5V adapter?

    Thanks and regards
    Venak

    The post was edited 2 times, last by Venkat ().

  • Hello Venkat,

    a little more information about this problem would be useful:
    Which J-Link software version do you use?
    Does the J-Link connect to your target if you use JLink.exe?
    Do you use an eval board or a custom hardware?

    >>Another question: If I use vcc-5V target, do I need to use segger 5V adapter?
    The J-Link 5V adapter is required when your target has JTAG signals at voltage levels higher than 3.3V
    Since hardware version 5.4 the JTAG interface of J-Link is 5V tolerant.
    For more information about the J-Link 5V adapter and how to determine your hardware version, please refer
    to the J-Link / J-Trace User Guide chapter 7.5 "5 Volt adapter" and 7.6 "How to determine the hardware version".

    Best regards,

    Alex
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