4.6.3. Powering the interface unit using the 14-way JTAG adaptor, HPI-0027

To connect to a running target using the optional 14-way adaptor:

  1. Ensure that the Multi-ICE interface unit is not already powered from the target.

  2. You must remove the link on connector J3 of the 14-way adaptor and connect a 5V power supply to the +5V and 0V pins. The VTref signal is permanently connected to the target power supply.

  3. The JTAG input lines TDI, TMS, nSRST, and nTRST must have pull-up resistors (normal practice) and TCK must have a pull-down resistor so that when the adaptor is disconnected from the target these lines are in their quiescent state.

  4. Switch on the power between Vsupply and GND. The power light on the Multi-ICE interface unit glows brightly.

  5. Configure the Multi-ICE server. You must either manually configure the server or autoconfigure using a separate test system. Leave the server running.


    Do not use autoconfigure on the target that must be debugged. Doing so resets the processor.

  6. Plug the 20-way JTAG cable into the target.

  7. Start the debugger. The debugger can then stop the processor and display the stopped state.

    To get a high-level (source code) view of the problem, you must load the symbol table for your target program into the debugger. For AXD, use File ? Load debug symbols.... For ADW or ADU, use File ? Load symbols only....

  8. Press the Go or Run button and unplug the JTAG connector to restart the system. Then exit the debugger.

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