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JTAG Reset using TRST pin

Prashant-m

Hello,

I am using DSTREAM-ST currently connected to an FPGA. The nTSRT pin is connected properly. Still, when I try to execute the 'reset jtag' command, I get the error "Error :(CMD463) : The reset capability jtag is not available". Upon executing the 'info capabilities' command, I see that there are 3 resets available 1. hardware reset 2. system reset 3. vector reset. 

What could be the possible reason for this?

1. Is DSTREAM capable of executing the reset jtag command.

2. Does the reset jtag work on FPGA rather than the actual silicon.

  • 0

    Hi

    My name is Stephen and I work at Arm.

    The possible reset options that the Arm DS Debugger can perform for your target are listed by "info capabilities".  If "JTAG Reset" is not listed, then the "reset jtag" will be unavailable to you.

    You say "System Reset" is listed, so you can use the "reset system" command instead.  This performs a system reset, which may meet your requirement.

    I would not expect any difference between FPGA and actual silicon in this respect.

    For more info on reset connections, see developer.arm.com/.../Reset-signals

    Hope this helps

    Stephen