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Altera_Forum
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14 years ago

JTAG Programing Cyclone III device

Hello, I`m new in developing boards with Altera, thus i tried to develop the simplest design: just Cyclone III, and a few leds. I`m going to program it with Usb blaster via JTAG, but when ...
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Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Do you have the MSEL3 pin floating? That would be a problem. See attachment and footnote 7.

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When the Quartus Programmer failed, there will be messages displayed in the Quartus II console. So minimized Programmer so you can see what's displayed in the main Quartus II console. That may give you a clue. Also I've seen the same problem before and when I close Quartus II and/or reboot my PC and try again, it'll work. Have you tried that? Also, your JTAG voltage of 2.5V for Cyclone III is correct so do not change that to 3.3V. That'll kill the device.

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