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Artix 75T is same fabric as 100T, 15T is same fabric as 50T #1871

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@marzoul marzoul commented Mar 5, 2022

Add support for part xc7a75t and xc7a15t
These are actually same fabrics as, respectively, xc7a100t and xc7a50t.

Note: There are 3 ways to confirm this.

  • Xilinx documentation ds181 for Artix-7 DC characteristics
  • Xilinx documentation ug470 for bitstream lengths
  • Manual creation of simple IO planning Vivado projects and observing that chip floorplans are identical.

I confirm the 3 points above for the 2 parts 75t and 15t.

@hansfbaier
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Thanks, that makes sense. Will try.

Signed-off-by: Adrien Prost-Boucle <adrien.prost-boucle@laposte.net>
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