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Altera_Forum
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11 years ago

Arria II reprograms itself from configuration ROM after it warms up

The problem is that I am using an Aria II which is being programmed by a configuration EPROM. The initial load is successful, and the board functions as expected. As the FPGA warms, the device seems ...
Altera_Forum's avatar
Altera_Forum
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11 years ago

Thank you both for the replies. Actually, I have been looking into both of these. We had our manufacturer re-ball and reflow the FPGA, and I am awaiting return of the boards. I also looked at the power supply issue, and I somewhat suspect the 0.9V power supply. I used the same design that was used on the Aria II development board, and that design includes the use of a switcher (TPS40140 with two MOSFETs (CSD16411)) to generate the 0.9V. Still, I see some significant switching noise that I am having trouble filtering.