ISE时序约束,求指点
打开ISE中的时序报告后,找到最慢的路径,基本信息如下:Slack (setup path): 18.892ns (requirement - (data path - clock path skew + uncertainty))
Source: U_ila_pro_0/U0/I_YES_D.U_ILA/U_CAPSTOR/I_CASE1.I_YES_TB.U_TRACE_BUFFER/U_RAM/I_V6.U_CS_BRAM_CASCADE_V6/I_DEPTH_EQ_48K_OR_64K.U_SBRAM_0/I_B36KGT0.G_RAMB36.u_ramb36/U_RAMB36 (RAM)
Destination: U_icon_pro/U0/U_ICON/U_TDO_reg (FF)
Requirement: 30.000ns
Data Path Delay: 11.073ns (Levels of Logic = 6)
Clock Path Skew: 0.000ns
Source Clock: icon_control0<0> rising at 0.000ns
Destination Clock: icon_control0<0> rising at 30.000ns
Clock Uncertainty: 0.035ns
然后想优化这个东西,结果source 和destination那里那么长一串东西,完全不知道对应程序中的哪一块,怎么破啊!!!help。
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