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Altera_Forum
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13 years ago

Cyclone IV JTAG Working, Configuration Not

This is the first time I have had a design around an Altera part not load properly. I am sure it is my fault, but I am running out of things to check. This is with a Cyclone IV EP4CE10E22C8N. Both of...
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Altera_Forum
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13 years ago

Hello Carlhermann

I think we can ignore the voltage to configuration device as the JTAG configuration itself is not happening properly. To isolate this issue, I have even removed the EPCS Flash and tried the JTAG configuration still the result is same.

As skrasms pointed out, the difference I find here is that the configuration (JTAG and AS) banks are powered from 2.5V instead of 3.3V. Does this kind of a situation require any special consideration?