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Altera_Forum's avatar
Altera_Forum
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12 years ago

Cyclone V dev. and USB Blaster II

Hi, I have Cyclone V development kit version E. I have installed the USB Blaster II driver. In the device manager i notices that the driver is unconfigured. I'm tring to download sof file t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Hi, Not sure if this is your precise problem. I also had problems with programming file only loading up to about 85% on my own hardware. I solved the problem by Inserting a 22R in series with TCK. The problem is overshoot on TCK. I added more 22 R on all the lines (in series), removed all snubber capacitors to GND, and a 22R between hps and FPGA tdi tdo. Now programming fine even at 24Mhz. Can also try to reduce USB blaster II clock speed.