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Thread: TC277 JTAG locked

  1. #1
    Beginner Beginner abhinand is on a distinguished road
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    TC277 JTAG locked

    Hello All,

    I am facing problem with respect to JTAG while trying to connect using UDE debugger.
    Error says JTAG Interface is locked. This microcontroller is a new device which has not been programmed before.
    How do i unlock this JTAG?
    ?????? ?????? JTAG Locked.JPG‎  

  2. #2
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    Hello,
    I expect that the device is in bootstrap loader mode.
    Which state has the ESR0?
    Which device step you use?
    Which board you use? Which Connections you have on P14.3, P10.5 and P10.6?
    The views expressed here are my personal opinions, have not been reviewed or authorized by Infineon and do not necessarily represent the views of Infineon.

  3. #3
    Beginner Beginner abhinand is on a distinguished road
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    Hello,

    I am using TC277 C Step. I am using an application board which is similar to HybridPACK™2 Enhanced SIL Logic Board v3.1.

    Connections:
    P14.3- 5V
    P10.5- 5V
    P10.6- 5V

    And ESR0 pin reads 5V.

  4. #4
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    The device is not locked. The device is in any bootstrap loader. If possible then connect P14.3 to ground and check if you can access then the device.
    The views expressed here are my personal opinions, have not been reviewed or authorized by Infineon and do not necessarily represent the views of Infineon.

  5. #5
    Beginner Beginner abhinand is on a distinguished road
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    I tried by connecting P14.3 to ground. Still not able to access the device.

    My question is if the device is never programmed before is it possible to enter bootstrap loader mode?
    If it is in any of the bootstrap loader mode why i cant access the device via Internal flash by changing HWCFG pins?
    How do i get out of bootstrap loader mode?

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