FFConfig Fuzzer

Documents the following:

  • FF clock inversion
  • FF primitive mapping
  • FF initialization value

Clock inversion is per slice (as BEL CLKINV)Vivado GUI is misleading as it often shows it per FF, which is not actually true

| |FFSYNC|LATCH|ZRST | |——|——|—–|—–| |Sample| 00_48|30_32|30_12| |FDPE | | | | |FDSE | X | | | |FDRE | X | | X | |FDCE | | | X | |LDCE | | X | X | |LDPE | | X | |

CLB.SLICE_X0.A5FF.ZINIT 31_06
CLB.SLICE_X0.A5FF.ZRESET 01_07
CLB.SLICE_X0.AFF.ZINIT 31_03
CLB.SLICE_X0.AFF.ZRESET 30_12
CLB.SLICE_X0.B5FF.ZINIT 31_22
CLB.SLICE_X0.B5FF.ZRESET 01_19
CLB.SLICE_X0.BFF.ZINIT 31_28
CLB.SLICE_X0.BFF.ZRESET 30_30
CLB.SLICE_X0.C5FF.ZINIT 31_41
CLB.SLICE_X0.C5FF.ZRESET 01_47
CLB.SLICE_X0.CFF.ZINIT 31_33
CLB.SLICE_X0.CFF.ZRESET 30_33
CLB.SLICE_X0.CLKINV 01_51
CLB.SLICE_X0.D5FF.ZINIT 31_51
CLB.SLICE_X0.D5FF.ZRESET 01_55
CLB.SLICE_X0.DFF.ZINIT 31_58
CLB.SLICE_X0.DFF.ZRESET 30_50
CLB.SLICE_X0.FFSYNC 00_48
CLB.SLICE_X0.LATCH 30_32
CLB.SLICE_X1.A5FF.ZINIT 31_05
CLB.SLICE_X1.A5FF.ZRESET 01_03
CLB.SLICE_X1.AFF.ZINIT 31_04
CLB.SLICE_X1.AFF.ZRESET 31_15
CLB.SLICE_X1.B5FF.ZINIT 31_23
CLB.SLICE_X1.B5FF.ZRESET 00_16
CLB.SLICE_X1.BFF.ZINIT 31_29
CLB.SLICE_X1.BFF.ZRESET 31_30
CLB.SLICE_X1.C5FF.ZINIT 31_42
CLB.SLICE_X1.C5FF.ZRESET 00_44
CLB.SLICE_X1.CFF.ZINIT 31_34
CLB.SLICE_X1.CFF.ZRESET 30_34
CLB.SLICE_X1.CLKINV 00_52
CLB.SLICE_X1.D5FF.ZINIT 31_52
CLB.SLICE_X1.D5FF.ZRESET 00_56
CLB.SLICE_X1.DFF.ZINIT 31_59
CLB.SLICE_X1.DFF.ZRESET 31_50
CLB.SLICE_X1.FFSYNC 01_31
CLB.SLICE_X1.LATCH 31_32