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Problem configuring Arria II GX in AS mode with EPCS128

Altera_Forum
Honored Contributor II
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I'm having some problems getting my FPGA to get the correct configuration from the config flash EPCS128 in AS mode.  

  • I have verified that my build is ok and I can program the FPGA using my .sof. The FPGA is alive and well using my .sof 

  • I can program the EPCS128 using the indirect method with a .jic file. I can program and verify that the flash gets programmed. 

  • I have verified that the MSEL lines are in the AS mode, standard POR. 

  • I have verified that nConfig = pulled high, conf_done = pulled high, STATUSn = pulled high and nCE pulled low. 

  • I've tried to generate my .jic with and without compression. 

  • I've tried both at 20MHz and 40 MHz AS clock. 

 

 

Monitoring the STATUSn line on a scope it seems to try to load over and over again failing at the same place. Since I can program and verify my configuration to the conf flash my interface should be good. I'm at loss of what to try next. Any help would be highly appreciated.  

 

Quartus Version: 13.0 1.dp6 

 

Thanks 

 

/Boris
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Altera_Forum
Honored Contributor II
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Found it! We are actually using a Micron flash chip and not Altera's EPCS and I have to "Disable EPCS ID check" in the "convert programming files" tool. Now I'm generating correct .jic file and everything is working.

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