Article ID: 000084199 Content Type: Troubleshooting Last Reviewed: 11/09/2011

Cyclone IV GX CPRI IP Core REC Master Cannot Achieve Link Synchronization

Environment

  • Quartus® II Subscription Edition
  • BUILT IN - ARTICLE INTRO SECOND COMPONENT

    Critical Issue

    Description

    An REC master that targets a Cyclone IV GX device cannot achieve link synchronization with an RE slave. You can modify some source files to avoid the issue.

    This issue affects all CPRI MegaCore function REC masters that target a Cyclone IV GX device.

    The REC master cannot achieve link synchronization.

    Resolution

    You can modify the source or generated files to fix this issue.

    If you have write access to your IP installation files, before you generate your CPRI MegaCore function, follow these steps.

    1. In a command shell, change directory to <IP installation>/altera/cpri/src/altgx.
    2. Change directory to 614 and type the following command:
    3. qmegawiz -silent -wiz_override=”sim_en_pll_fs_res=true” cyclone4gx_614_s_tx.vhd

    4. Change directory to ../1228 and type the following command:
    5. qmegawiz -silent -wiz_override=”sim_en_pll_fs_res=true” cyclone4gx_1228_s_tx.vhd

    6. Change directory to ../2457 and type the following command:
    7. qmegawiz -silent -wiz_override=”sim_en_pll_fs_res=true” cyclone4gx_2457_s_tx.vhd

    8. Change directory to ../3072 and type the following command:
    9. qmegawiz -silent -wiz_override=”sim_en_pll_fs_res=true” cyclone4gx_3072_s_tx.vhd

    If you do not have write access to your IP installation files, you can run the same commands after you generate your CPRI MegaCore function. After generation, the same files appear in different folders in your project directory. Change directory to the appropriate folders to run the same commands.

    This issue is fixed in version 10.1 SP1 of the CPRI MegaCore function.

    Related Products

    This article applies to 1 products

    Cyclone® IV FPGAs

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