LatticeXP2 问题

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LatticeXP2 问题 [复制链接]

Family: LatticeXP2
Part name: LFXP2-5E-5QN208C

代码:
    ODDRX2B ud_0 (
 .DA0(Data[0]),
 .DB0(Data[1]),
 .DA1(Data[2]),
 .DB1(Data[3]),
 .ECLK(EClk),
 .SCLK(SClk),
 .RST(scuba_vlo),
 .Q(buf_Q0))/*synthesis GSR="DISABLED" */;
 

    OB buf_Q0_out_inst (.I(buf_Q0), .O(out_LVDS_CLK));

运行 Map Timing Checkpoint 的错误信息:
================================================================================
Internal Preference: Timing Rule Check
            5 items scored, 5 timing errors detected.
--------------------------------------------------------------------------------
This section of the Trace report will identify any inherent timing rule violations
in the design. These rules may be independent of preferences.

Error: out_LVDS_CLK_MGIOL exceeds CLK to ECLKO skew range from -4.121ns to -0.312ns

   Max skew of 0.000ns exceeds timing requirement of -0.312ns by 0.312ns

请问问题怎么解决？

eeleader

自己顶一下!