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Altera_Forum's avatar
Altera_Forum
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8 years ago

Arria V PCIe hard IP

Hello everbody, I need help about PCIe configuration.

I work with arria V and i use PCIe hard IP.

My question is , we can have PCIe soft IP in Arria V ?

and my last question is we can drive in FPGA the input signal pin_perst of PCIe ?

thanks

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    8 years ago

    Because in the final card of my project i have affected the wrong signal for the reset pine and the final card is already been manufactured.

    So i have to move the reset pine in the arria 5 but it is impossible because this pin is dedicated pine.

    I thought if i use SOFT core i can chose the all pine who will use the PCIe.

    sorry my english is not very good , i don't know if you understand.

    thanks for your time.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    8 years ago

    For Arria V device, the mapping of nPERST is as below:

    - nPERSTL0 --> bottom Hard IP of pin_perst

    - nPERSTL1 --> top Hard IP of pin_perst

    In your case, try workaround it by changing to use Soft Reset Controller.

    Using Soft Reset Controller doesn't required the connection to pin nPERSTL0. Tie pin_perst to 1 at top level file and nPERSTL0 can be left unconnected at pin assignment.

    Steps to switch to soft reset controller in Qsys:

    1) Edit the .qsys file

    2) Search for the string 'force_src'

    3) Set parameter force_src to 1:

    <parameter name="force_hrc" value=0" />

    <parameter name="force_src" value=1" />

    4) Save the changes to the .qsys file and regenerate the Qsys system.

    5) Use npor input to reset the core and application logic.