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TMS320F28033: Error connecting to the target

Kedao Qi
Prodigy 10 points
Part Number: TMS320F28033
Other Parts Discussed in Thread: TMDSEMU200-U 

Issue in Configuring TMS320F28033 in UniFlash

I'm experiencing some problem on programming TMS320F28033, and the debugger is Texas Instruments XDS2xx USB Debug Probe. 
In UniFlash, the error message is:
[ERROR] C28xx: Error connecting to the target: (Error -180 @ 0x0) The controller has detected a target power loss. 
The user must turn-on or connect the power supply for the target. (Emulation package 9.5.0.00141). 

I'm using Uniflash 7.0.0

I believe that means the TVRef pin is not seeing 3.3V. But I'm sure the 3.3V is provided to pin 5 of the debugger which is TVRef. 
And it is reference to the same ground of the 3.3V to the DSP.

Any help would be appreciated! Thanks!
Kedao
  • 0
    TI__Guru 71835 points

    Kedao,

    I would try placing the device in Wait Boot Mode(shown below), before powering the device and then see if this fixes the connection.  The Code Security Module on this device can block JTAG access and will give a similar error to that above.

    Best,

    Matthew

  • 0 in reply to MatthewPate
    Prodigy 10 points

    Hi Matthew,

    Thank you for the reply!

    To my knowledge the Code Security Module was not enabled. But I'll double check to make sure.

    Do you know if there's any other possibility?

    Thanks,

    Kedao

  • 0 in reply to Kedao Qi
    TI__Guru 71835 points

    Would it be possible to share the schematic, at least the power and reset portions?  I would also verify that the 3.3V is within the datasheet limits of 2.97V minimum.  There is some onboard voltage monitoring that can put the device into reset if this power rail is out of spec too much.

    Even on a new device, where the CSM is not programmed if the code is executing from a secure region and the dummy read of the passwords has not been done then the memory will still be secure; so using the Wait Boot will be needed to take care of this.

    Best,

    Matthew

  • +1 in reply to MatthewPate
    Prodigy 10 points

    Hi Matthew,

    We ordered a same debugger (TMDSEMU200-U) from TI. It programmed the microcontroller without problem. I believe the issue was on the previous debugger we use.

    Thank you very much you your help!

    Kedao