XC9500 JTAG Initialize problem

Feb 26, 2006 3 Replies
C

Hai



XC9500 is not initialized and .log file directing me to look for hardwar config problems. I have Connected Parallel cable and using JTAG interface(assembled). Al of JTAG Connections and VCC, GND connections were made properly The Part Iam tring to use :PLCC84-15. The software ( ISE3.3i) has been tried on both win-98 an Win-2000.Hardware working with Pentium IV processor.



When observed on scope, I have seen glitches on TDI TDO and TCk pins.A suggested in Parallel III cable, I am using HC125 ICs. How to kill them.



Any suggestions!



Thanks Chelam


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B

Whereabouts are you using the HC125 devices? Are you sure you haven't inadvertantly inverted the signals? A schematic or pinout would be helpful... (post it online somewhere and link to it)

Like Antii says, a quick solution is potentially an RC to remove the glitches, but it would nice to know exactly what's going on.

BTW: You should try moving away from the old foundation software... but I guess your cable isn't supported for newer versions... In any event I use a Parallel Cable IV with the XC9500, still using ISE7.1, will upgrade to 8 when it settles down. It works very well.

Ben

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I was able to program my first XC9572 using a parallel jtag and ISE8.1. Of course ISE8.1 crash often but you can live with that (it does usually when u exit a tool ... )

Benjam> Whereabouts are you using the HC125 devices? Are you sure you haven't

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