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Altera_Forum
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19 years ago

Cyclone III AS configuration bizarreness

I am using a cyclone III (EP3C25F324C8N) with an EPCS16 configuration device. I am programming the configuration device through the FPGA with the serial flash loader. The problem is that the Cyc...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Hi all,

I encounter exactly the same "bizarre" problem, using an EP3Q240C8 on a homemade board.The reconfig in AS mode (with an EPCS16) is only effective when the dclk pin from the fpga is link to the usb blaster dclk pin, or to a probe, or just to a wire. I can't understand at all why disturb the dclk wire fix the problem. Morover when i see this topic it's not a totally isolate unique lucky fix.