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Power Up Sequencing

  1. Connect your cable to your host computer.

  2. Turn the power to your target system off, if possible.

  3. The power for the drivers is derived from the target system. Connect the cable's GND wire to the corresponding signal on the target board. Next, connect VCC to the corresponding signal on the target board.

    NOTE

    Download cables will not operate if the target system`s power is turned off before or during JTAG Programmer operations. Make certain that this power connection is on and stable. Your system's power should be on during JTAG Programmer operations.

    NOTE

    JTAG Programmer will always initiate operations using a JTAG TAP controlled reset sequence. This performs the exact same operation as the assertion of the TRST pin; it initializes all devices` JTAG state machines and internal registers.

  4. Next connect the JTAG TAP inputs. Connect TCK, TDI, TMS and TDO to the target board. TRST is not supported by the XC9500 JTAG Download Cables. If any of your JTAG parts have a TRST pin, it should be connected to VCC.

  5. Power up the target system.

    WARNING

    Cable protection ensures that the parallel port cannot be damaged through normal cable operation. For increased safety, please check that the power to the system controller is on before the target system is powered up.

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