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Altera_Forum
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13 years ago

Programming FPGA failing

I m trying to debug a custom built FPGA board developed in my institution, that contains Cyclone IV EP4CE1022C8 FPGA. When programmed using UrJTAG software, it returns a warning: TDO may be stuck at ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

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The warning says it all, don't You think? TDO signal may be shorted to VCC, check that.

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Thanks for the fast reply Socrates, but i ve double checked whether any of the supply pins are getting shorted with the TDO pin, and i ve just rechecked it and its NOT . So what is the next step that i should do in the debugging. There are three supply voltages for the device, 1.2,2.5 and 3.3. Supply voltages are also not shorted, nor are they shorted to the TDO pin, as i ve just said.And one more thing, What is the obvious method to check whether the FPGA has gone faulty?

Regards

Jeebu