PAR网表切片实例化两次有不同的LUT功能初始值

你好，
我正在使用ISE 14.2来实现我的设计。
我还生成了一个Post Place和Route Simulation模型。
我在编辑器中打开了这个vhdl网表，看看它。
在那里你可以看到LUT实例。
每个Slice包含4个LUT，因此Slices可用于最多4个功能块。
但是为什么64位Init值设置Slice的所有4个LUT的功能（在下面的例子中标记为红色）总是在切片的每个LUT实例中完全改变，而不仅仅是为一个LUT保留的16位？
例：
lut19353_3449：X_LUT6通用映射（LOC =>“SLICE_X22Y75”，INIT => X“D1C0000000000000”）端口映射（ADR5 => lut18520_36_42230，ADR4 => lut3525_15_43412，ADR1 => i_ecc_FPGA_i_ecc_i_cntr_prgr（0），ADR3 => lut18467_3031_45712，ADR0 =>
lut3523_13_42257，ADR2 => lut18752_3203_45747，O => lut19353_3449_45707）;
lut19276_3394：X_LUT6通用映射（LOC =>“SLICE_X22Y75”，INIT => X“0000001000100010”）端口映射（ADR4 => i_ecc_fpga_i_ecc_i_cntr_prgr（0），ADR0 => i_ecc_fpga_i_ecc_i_cntr_prgr（1），ADR2 => i_ecc_fpga_i_ecc_i_cntr_state（2），ADR1 =
> lut3523_13_42257，ADR3 => lut19265_3383_45401，ADR5 => lut19252_34_45396，O => lut19276_3394_45399）;
提前致谢。
问候
托马斯



以下为原文

Hello,

I am using ISE 14.2 implementing my designs. I also generate a Post Place and Route Simulation model. I opened this vhdl netlist in an editor to have a look at it. There you can see the LUT instances. Every Slice contains 4 LUTs so the Slices could be used for up to 4 functional blocks.

But why the 64 bit Init Value setting the functionality of all 4 LUTs of a Slice (marked red in the example below)  is always changing completely for every LUT instance of a slice and not only in the 16 bit reserved for one LUT?

Example:

lut19353_3449 : X_LUT6
generic map(
LOC => "SLICE_X22Y75",
INIT => X"D1C0000000000000"
)
port map (
ADR5 => lut18520_36_42230,
ADR4 => lut3525_15_43412,
ADR1 => i_ecc_fpga_i_ecc_i_cntr_prgr(0),
ADR3 => lut18467_3031_45712,
ADR0 => lut3523_13_42257,
ADR2 => lut18752_3203_45747,
O => lut19353_3449_45707
);

lut19276_3394 : X_LUT6
generic map(
LOC => "SLICE_X22Y75",
INIT => X"0000001000100010"
)
port map (
ADR4 => i_ecc_fpga_i_ecc_i_cntr_prgr(0),
ADR0 => i_ecc_fpga_i_ecc_i_cntr_prgr(1),
ADR2 => i_ecc_fpga_i_ecc_i_cntr_state(2),
ADR1 => lut3523_13_42257,
ADR3 => lut19265_3383_45401,
ADR5 => lut19252_34_45396,
O => lut19276_3394_45399
);

Thanks in advance.

Regards

Thomas