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| author | Eddie Hung <eddie@fpgeh.com> | 2019-08-19 12:46:35 -0700 |
|---|---|---|
| committer | Eddie Hung <eddie@fpgeh.com> | 2019-08-19 12:46:35 -0700 |
| commit | b71212ddeaf099fbbf78d65cf64b3f6f75f80aea (patch) | |
| tree | 8937279531b73c7a10185394f76fc96fba73773e /techlibs | |
| parent | e29df7d5fa507657994e974630e89511a205ff1e (diff) | |
| download | yosys-b71212ddeaf099fbbf78d65cf64b3f6f75f80aea.tar.gz yosys-b71212ddeaf099fbbf78d65cf64b3f6f75f80aea.tar.bz2 yosys-b71212ddeaf099fbbf78d65cf64b3f6f75f80aea.zip | |
Add BRAM arrival times
Diffstat (limited to 'techlibs')
| -rw-r--r-- | techlibs/xilinx/xc7_brams_bb.v | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/techlibs/xilinx/xc7_brams_bb.v b/techlibs/xilinx/xc7_brams_bb.v index a682ba4a7..0e8cb406c 100644 --- a/techlibs/xilinx/xc7_brams_bb.v +++ b/techlibs/xilinx/xc7_brams_bb.v @@ -1,3 +1,5 @@ +// Max delays from https://github.com/SymbiFlow/prjxray-db/blob/f8e0364116b2983ac72a3dc8c509ea1cc79e2e3d/artix7/timings/BRAM_L.sdf#L138-L147 + module RAMB18E1 ( input CLKARDCLK, input CLKBWRCLK, @@ -19,10 +21,10 @@ module RAMB18E1 ( input [1:0] WEA, input [3:0] WEBWE, - output [15:0] DOADO, - output [15:0] DOBDO, - output [1:0] DOPADOP, - output [1:0] DOPBDOP + (* abc_arrival=2454 *) output [15:0] DOADO, + (* abc_arrival=2454 *) output [15:0] DOBDO, + (* abc_arrival=2454 *) output [1:0] DOPADOP, + (* abc_arrival=2454 *) output [1:0] DOPBDOP ); parameter INITP_00 = 256'h0000000000000000000000000000000000000000000000000000000000000000; parameter INITP_01 = 256'h0000000000000000000000000000000000000000000000000000000000000000; @@ -143,10 +145,10 @@ module RAMB36E1 ( input [3:0] WEA, input [7:0] WEBWE, - output [31:0] DOADO, - output [31:0] DOBDO, - output [3:0] DOPADOP, - output [3:0] DOPBDOP + (* abc_arrival=2454 *) output [31:0] DOADO, + (* abc_arrival=2454 *) output [31:0] DOBDO, + (* abc_arrival=2454 *) output [3:0] DOPADOP, + (* abc_arrival=2454 *) output [3:0] DOPBDOP ); parameter INITP_00 = 256'h0000000000000000000000000000000000000000000000000000000000000000; parameter INITP_01 = 256'h0000000000000000000000000000000000000000000000000000000000000000; |