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Altera_Forum
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14 years ago

AS Verification failed for Cyclone-I

Hello all, I am trying to configure a Cyclone-I FPGA using EPCS4 configuration device. I am using Active Serial programming. The programming is going through fine, but I get the verification fai...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

One possible reason is that AS interface is more susceptible to signal integrity problems than JTAG. If you have a JTAG interface too, you should try to access the EPCS device through indirect JTAG programming (after generating a JIC file).

It would be interesting to know, at which memory location the verify fails, and if it's always the same. Another question is, if the configuration is accepted by the FPGA. It won't, if a CRC error is detected.