Article ID: 000081470 Content Type: Troubleshooting Last Reviewed: 11/15/2011

PLL Sharing Problem for LVDS Channels

Environment

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

    Critical Issue

    Description

    In designs containing multiple PMA Blocks with LVDS I/O, the LVDS channels from different Triple-Speed Ethernet MegaCore functions fail to share a common PLL.

    This issue affects designs that contain the Stratix II, Stratix II GX, Stratix III and Stratix IV E/GX device families.

    Resolution

    No workaround.This issue is fixed in version 11.0 of the Triple-Speed Ethernet MegaCore function.

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