J-Link problems when connecting to RVDS3.0

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  • J-Link problems when connecting to RVDS3.0

    Hello, everyone,

    I have borrowed a J-link from my friend. I want to connect it to an ARM-926EJ core processor developed by my company. I find that, if I try ADS1.2+J-link, it works well. However, if I try RVDS3.0+ J-link, it failed. Can somebody tell me how to solve this?

    In my preview FPGA verification on ARM920T and ARM926-EJ integrator, I also found some interesting things:

    1)ADS1.2+J-link+ ARM920T or ARM926EJ integrator, the connections was always successful.

    2)RVDS3.0+J-link+ARM926EJ integrator was always successful If I set JTAG baud to 4800K. RVDS3.0+J-link+ARM920T integrator was sometimes successfully, in some cases, I had to press reset button on integrator before connectiong J-link USB cable to PC,BTW, I tried almost all baud rate.

    So I am wondering what is the difference between ADS1.2 and RVDS3.0 when using J-link. Maybe timing, wait state transition, or someting else....