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Altera_Forum
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17 years ago

Stratix III JTAG Failure

Hi All, I have problem on Stratix III device on my Custom development board. Device: Stratix III - EP3SL340 Download cable : Altera USB Blaster We have provided two configura...
Altera_Forum's avatar
Altera_Forum
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14 years ago

Actually I just fixed a shorted TDO pin to ground by applying 3.8V to it. The pin went from 40 ohm to ground to over 200 ohm and now JTAG works again.

I don't know why it failed, the board has been working fine for weeks. Today JTAG just stopped working. I guess a protection diode blew out and shorted. I just burned it open!