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Altera_Forum
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12 years ago

USB Blaster, Cyclone III, PS question

For development work, I would like to use a USB Blaster to configure a Cyclone III device in Passive Serial mode. Most of the USB Blaster is powered from the USB's VBUS except the I/O pins that conn...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Dave-

Thanks, I just discovered that paper earlier today. I will definitely check into it.

I'm not going to put a PS header on the board, that would be a bit goofy wouldn't it? As I said, it's only for development, so I'm going to stick some short flywires down and connect them to a header until I can get the micro to load the FPGA.

This being the case, I still don't have an answer to my original question. Why does the Cyclone III manual say to connect the USB Blaster to VCCA instead of VCCIO?

Thanks,

-Randy