Labels Milestones
BackGrid, 19x19mm package, 0.8mm pitch; https://www.xilinx.com/support/documentation/user_guides/ug475_7Series_Pkg_Pinout.pdf#page=270, NSMD pad definition Appendix A Spartan-7 BGA, 26x26 grid, 27x27mm package, 1mm pitch; https://www.xilinx.com/support/documentation/user_guides/ug475_7Series_Pkg_Pinout.pdf#page=302, NSMD.
- 75x9mm^2 drill 1.3mm pad 2.6mm.
- * (360/RingMarkings)] cube([RingWidth*.5, MarkingWidth, 2], center=true); if.