AnsweredAssumed Answered

JTAG error caused by PLLBP?

Question asked by lakerhy on Sep 27, 2010
Latest reply on May 23, 2011 by Mitesh

Hi there:

 

I am using an ADSP-21369 EZ-KIT for my project. It works all right. But this afternoon, when I initialize the PLL, it just lost communication with the board. I have tried the basic timer example in the code example folder for 21369 ez-kit and step the InitPLL function, the JTAG lost communication just after setting the bypass mode  in PMCTL register:

 

   pmctlsetting |= PLLBP;

   *pPMCTL = pmctlsetting;

 

The "The target has requested to disconnect from the IDDE" message pops out and let you choose to disconnect from the board.

 

I tried to restart and reconnect the board and run the timer project a couple of times, but the same problem persists.

 

Any idea what is going on with my board and how to get rid of this problem? Without setting up the clock, I can not do anything useful.

 

Thanks in advance.

Outcomes