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| author | Eddie Hung <eddie@fpgeh.com> | 2019-12-27 12:03:19 -0800 |
|---|---|---|
| committer | Eddie Hung <eddie@fpgeh.com> | 2019-12-30 14:35:10 -0800 |
| commit | eb4e767053f4731c9f4b82c4dd53504e5fe50802 (patch) | |
| tree | 2b369b2897e4538b6bdf20d5bf00f27af9f97481 /techlibs | |
| parent | 3cbbae251fc4a4b10abe21fde9c7316bb940a957 (diff) | |
| download | yosys-eb4e767053f4731c9f4b82c4dd53504e5fe50802.tar.gz yosys-eb4e767053f4731c9f4b82c4dd53504e5fe50802.tar.bz2 yosys-eb4e767053f4731c9f4b82c4dd53504e5fe50802.zip | |
Do not offset FD* box timings due to -46ps Tsu
Diffstat (limited to 'techlibs')
| -rw-r--r-- | techlibs/xilinx/abc9_xc7.box | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/techlibs/xilinx/abc9_xc7.box b/techlibs/xilinx/abc9_xc7.box index a2d119284..16606d14e 100644 --- a/techlibs/xilinx/abc9_xc7.box +++ b/techlibs/xilinx/abc9_xc7.box @@ -53,50 +53,59 @@ $__ABC9_ASYNC0 1000 1 2 1 $__ABC9_ASYNC1 1001 1 2 1 0 764 -# The following FD*.{CE,R,CLR,PRE) are offset by 46ps to -# reflect the -46ps Tsu -# https://github.com/SymbiFlow/prjxray-db/blob/23c8b0851f979f0799318eaca90174413a46b257/artix7/timings/slicel.sdf#L237-L251 -# https://github.com/SymbiFlow/prjxray-db/blob/23c8b0851f979f0799318eaca90174413a46b257/artix7/timings/slicel.sdf#L265-L277 +# Max delays from https://github.com/SymbiFlow/prjxray-db/blob/23c8b0851f979f0799318eaca90174413a46b257/artix7/timings/slicel.sdf#L237-L251 +# https://github.com/SymbiFlow/prjxray-db/blob/23c8b0851f979f0799318eaca90174413a46b257/artix7/timings/slicel.sdf#L265-L277 + +# NB: Inputs/Outputs must be ordered alphabetically +# (with exception for \$currQ) # Inputs: C CE D R \$currQ # Outputs: Q FDRE 1100 1 5 1 -0 151 0 446 0 +#0 109 -46 404 0 +0 109 0 404 0 # Clamp -46ps Tsu # Inputs: C CE D R \$currQ # Outputs: Q FDRE_1 1101 1 5 1 -0 151 0 446 0 +#0 109 0 -46 404 +0 109 0 0 404 # Clamp -46ps Tsu # Inputs: C CE CLR D \$currQ # Outputs: Q FDCE 1102 1 5 1 -0 151 806 0 0 +#0 109 764 -46 0 +0 109 764 0 0 # Clamp -46ps Tsu # Inputs: C CE CLR D \$currQ # Outputs: Q FDCE_1 1103 1 5 1 -0 151 806 0 0 +#0 109 764 -46 0 +0 109 764 0 0 # Clamp -46ps Tsu # Inputs: C CE D PRE \$currQ # Outputs: Q FDPE 1104 1 5 1 -0 151 0 806 0 +#0 109 -46 764 0 +0 109 0 764 0 # Clamp -46ps Tsu # Inputs: C CE D PRE \$currQ # Outputs: Q FDPE_1 1105 1 5 1 -0 151 0 806 0 +#0 109 -46 764 0 +0 109 0 764 0 # Clamp -46ps Tsu # Inputs: C CE D S \$currQ # Outputs: Q FDSE 1106 1 5 1 -0 151 0 446 0 +#0 109 -46 446 0 +0 109 0 446 0 # Clamp -46ps Tsu # Inputs: C CE D S \$currQ # Outputs: Q FDSE_1 1107 1 5 1 -0 151 0 446 0 +#0 109 -46 446 0 +0 109 0 446 0 # Clamp -46ps Tsu # SLICEM/A6LUT # Box to emulate comb/seq behaviour of RAMD{32,64} and SRL{16,32} |