| # Max delays from https://github.com/SymbiFlow/prjxray-db/blob/34ea6eb08a63d21ec16264ad37a0a7b142ff6031/artix7/timings/CLBLL_L.sdf |
| # https://github.com/SymbiFlow/prjxray-db/blob/23c8b0851f979f0799318eaca90174413a46b257/artix7/timings/slicel.sdf |
| |
| # NB: Inputs/Outputs must be ordered alphabetically |
| # (with exceptions for carry in/out) |
| |
| # Average across F7[AB]MUX |
| # Inputs: I0 I1 S0 |
| # Outputs: O |
| F7MUX 1 1 3 1 |
| 204 208 286 |
| |
| # Inputs: I0 I1 S0 |
| # Outputs: O |
| MUXF8 2 1 3 1 |
| 104 94 273 |
| |
| # Box containing MUXF7.[AB] + MUXF8, |
| # Necessary to make these an atomic unit so that |
| # ABC cannot optimise just one of the MUXF7 away |
| # and expect to save on its delay |
| # Inputs: I0 I1 I2 I3 S0 S1 |
| # Outputs: O |
| $__MUXF78 3 1 6 1 |
| 294 297 311 317 390 273 |
| |
| # CARRY4 + CARRY4_[ABCD]X |
| # Inputs: CYINIT DI0 DI1 DI2 DI3 S0 S1 S2 S3 CI |
| # Outputs: O0 O1 O2 O3 CO0 CO1 CO2 CO3 |
| # (NB: carry chain input/output must be last |
| # input/output and the entire bus has been |
| # moved there overriding the otherwise |
| # alphabetical ordering) |
| CARRY4 4 1 10 8 |
| 482 - - - - 223 - - - 222 |
| 598 407 - - - 400 205 - - 334 |
| 584 556 537 - - 523 558 226 - 239 |
| 642 615 596 438 - 582 618 330 227 313 |
| 536 379 - - - 340 - - - 271 |
| 494 465 445 - - 433 469 - - 157 |
| 592 540 520 356 - 512 548 292 - 228 |
| 580 526 507 398 385 508 528 378 380 114 |
| |
| # SLICEM/A6LUT |
| # Box to emulate comb/seq behaviour of RAMD{32,64} and SRL{16,32} |
| # Necessary since RAMD* and SRL* have both combinatorial (i.e. |
| # same-cycle read operation) and sequential (write operation |
| # is only committed on the next clock edge). |
| # To model the combinatorial path, such cells have to be split |
| # into comb and seq parts, with this box modelling only the former. |
| # Inputs: A S0 S1 S2 S3 S4 S5 |
| # Outputs: Y |
| $__ABC_LUT6 2000 0 7 1 |
| 0 642 631 472 407 238 127 |
| |
| # SLICEM/A6LUT + F7BMUX |
| # Box to emulate comb/seq behaviour of RAMD128 |
| # Inputs: A S0 S1 S2 S3 S4 S5 S6 |
| # Outputs: DPO SPO |
| $__ABC_LUT7 2001 0 8 1 |
| 0 1047 1036 877 812 643 532 478 |
