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Altera_Forum
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14 years ago

Impossible to configure Cyclone III with JTAG

Hello, I have a problem with Cyclone III EP3C25F324 device programming. I'am using a board with 1 cyclone III, a EPCS128 device and a PC28F128P30BF65E flash. Flash Ram is not connected to th...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Thanks for your quick answer.

All my power supplies are good. TCK Hight level is 2V instead of 2.5V).

But some VREF pins are not connected.

Do I have to connect VREF to VCCIO or GND if I don't want to use it ?