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Altera_Forum
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12 years ago

EPCS config failing advice needed

Morning folks, I have just created my first FPGA (EP3C10E144C8N)board with a config memory (AT25DF321A-SH-B). Whilst I seem to be able to program the device with the jic and then verify it, th...
Altera_Forum's avatar
Altera_Forum
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12 years ago

Hi:

One issue is the size is wrong. Altera doesn't have an EPCS32. Only 16 and 64

http://www.altera.com/literature/hb/cfg/cyc_c51014.pdf

It's probably getting to the device verification and failing. (My guess). Because the size is incorrect. I have had good luck with the M25P family. I have used other manufactures, but I validated them on a board before releasing them for production. Not all serial flashes work even if they are the correct size. I know we had issues with Atmel parts.

Lately we are using external CPU's to do the programming more often, so I haven't looked at this issue recently.

Looking at the Altera site, it looks like they are using quad SPI going forward as the standard. We haven't used any of these yet..

Pete