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Altera_Forum's avatar
Altera_Forum
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15 years ago

Passive Serial & Fast Passive Parallel Configuration for Cyclone IV

Hi,

Can any one guide me to get the 'C' Source code to perform a PS and FPP configuration for my Cyclone 4 device. I am using a freescale processor & an external flash memory.

Basically I am looking for source code that the microprocessor can execute to configure the FPGA device via PS ot FPP configuration. Also I would need the configuration source code to configure via JTAG interface.

Thanks a lot in advance !!!

Thanks,

Sunil.

5 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    Hi,

    Thanks for your reponse. But, I am looking for the C Source code which does the FPGA configuration using the host proecessor !

    Thanks,

    Sunil
  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    I did this recently for cyclone iii so I will outline the steps. This is for parallel loading scheme.

    - Convert SOF into a TTF and RBF and select the programming mode. TTF is a comma separated value text file. RBF is a raw binary file. I used rbf becuase it smaller file size and easier to work with in C/C++.

    - DRIVE DCLK LOW

    - DRIVE NCONFIG HIGH

    - DRIVE NCONFIG LOW

    - DRIVE NCONFIG HIGH

    - Sleep 1 ms (Delay to allow NSTATUS to pull high)

    - CONF_DONE should be LOW and NSTATUS shoud be high

    - For each byte in the rbf file, drive data to fpga data config inputs and pulse DCLK hi

    - While loading CONF_DONE should remain low / NSTATUS should remain high

    - After all bytes are loaded pulse DCLK a few extra times (read data book on device for specific extra clocking requirements ).

    - To verify config if complete/success verify CONF_DONE is high and NSTATUS is high.

    - Optionally cpu can monitor the NSTATUS pin for errors (Goes LOW), however it can be ignored util the end of loading the entire file to the part.
  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    Hi kito,

    Thanks for your response. I will try it out.

    Thanks,

    Sunil