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PeterToo's avatar
PeterToo
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5 years ago

Cyclone IV FPGA startup issue

I am using the EP4CE40 FPGA with EPCS128 configuration device, and having problem on power up. What happen was it used to power up fine. But after I made some changes to my code and compiled, the F...
JohnT_Altera's avatar
JohnT_Altera
Icon for Regular Contributor rankRegular Contributor
5 years ago

Hi,


Thanks for the update. It looks like your image is working fine. Just that there might be some issue when it is trying to programmed the FPGA from the flash where there is some issue. May I know how do you convert the JIC file?


PeterToo's avatar
PeterToo
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5 years ago

Here are some update on this issue:

We have added the following two components as an alternate part for EPCS128 that used on this board due to obsolescence:
- Intel EPCQ128ASI16N
- ST-Micro M25P128-VME6GB

We tested them on the board with the release FPGA image and they work fine.

However when we made some changes to the FPGA code and release a new image, the problem started to show up. And failure is intermittent, some boards work and some don't.

Attached is the cof file for converting sof to jic.

Thanks, Peter