clk_div5.fit.eqn

对任意始终进行精确的5分频处理,而且没有毛刺,效果很好.

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--levelr is levelr at LC_X1_Y4_N7
--operation mode is normal

levelr_lut_out = countr[0] & (levelr) # !countr[0] & (countr[2] & (levelr) # !countr[2] & !countr[1]);
levelr = DFFEAS(levelr_lut_out, GLOBAL(clk), VCC, , , , , , );


--levelf is levelf at LC_X1_Y4_N3
--operation mode is normal

levelf_lut_out = countf[2] & (levelf) # !countf[2] & (countf[0] & (levelf) # !countf[0] & !countf[1]);
levelf = DFFEAS(levelf_lut_out, !GLOBAL(clk), VCC, , , , , , );


--A1L3 is clk_div~0 at LC_X1_Y4_N5
--operation mode is normal

A1L3 = levelr # levelf;


--countr[2] is countr[2] at LC_X1_Y4_N1
--operation mode is normal

countr[2]_lut_out = countr[1] & (countr[0] $ countr[2]) # !countr[1] & countr[0] & countr[2];
countr[2] = DFFEAS(countr[2]_lut_out, GLOBAL(clk), VCC, , , , , , );


--countr[0] is countr[0] at LC_X1_Y4_N2
--operation mode is normal

countr[0]_lut_out = !countr[0] & (countr[1] # !countr[2]);
countr[0] = DFFEAS(countr[0]_lut_out, GLOBAL(clk), VCC, , , , , , );


--countr[1] is countr[1] at LC_X1_Y4_N8
--operation mode is normal

countr[1]_lut_out = countr[1] $ countr[0];
countr[1] = DFFEAS(countr[1]_lut_out, GLOBAL(clk), VCC, , , , , , );


--countf[2] is countf[2] at LC_X1_Y4_N6
--operation mode is normal

countf[2]_lut_out = countf[0] & (countf[1] $ countf[2]) # !countf[0] & countf[1] & countf[2];
countf[2] = DFFEAS(countf[2]_lut_out, !GLOBAL(clk), VCC, , , , , , );


--countf[0] is countf[0] at LC_X1_Y4_N4
--operation mode is normal

countf[0]_lut_out = !countf[0] & (countf[1] # !countf[2]);
countf[0] = DFFEAS(countf[0]_lut_out, !GLOBAL(clk), VCC, , , , , , );


--countf[1] is countf[1] at LC_X1_Y4_N9
--operation mode is normal

countf[1]_lut_out = countf[0] $ countf[1];
countf[1] = DFFEAS(countf[1]_lut_out, !GLOBAL(clk), VCC, , , , , , );


--clk is clk at PIN_17
--operation mode is input

clk = INPUT();


--clk_div is clk_div at PIN_27
--operation mode is output

clk_div = OUTPUT(A1L3);