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Altera_Forum
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8 years ago

JTAG connection issue

Hi all, I have a board that configured the Cyclone 4 E device JTAG signals with 2.5V with 100 ohm series resistor on all signals and TMS, TDI pulled up to 2.5V through 2.2k resistors. I ob...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

Hi Alex,

The problem is this is an expensive board I purchased from Enclustra a few weeks ago. I do not want to modify it, though I would be nice to prove to them that their product is defective; but I cannot be so sure.

I did try the same blaster with a working Cyclone 3 starter board. The waveforms look like the attached (exactly the same setup).

https://www.alteraforum.com/forum/attachment.php?attachmentid=15688