The-OpenROAD-Project_OpenROAD/src/odb/test/data/example.3dbx

Header:
  version: "1.0"
  unit: "micron"
  precision: 2000
  include:
    - example.3dbv

Design:
  name: "TopDesign"
  external:
    verilog_file: "top.v"

ChipletInst:
  soc_inst:
    reference: SoC
    external:
      verilog_file: "soc.v"
      sdc_file: "/path/to/soc.sdc"
      def_file: ../fake_macros.def
  soc_inst_duplicate:
    reference: SoC
    external:
      verilog_file: "soc.v"
      sdc_file: "/path/to/soc.sdc"

Stack:
  soc_inst:
    loc: [100.0, 200.0]
    z: 0.0
    orient: R0
  soc_inst_duplicate:
    loc: [100.0, 200.0]
    z: 300.0
    orient: MZ

Connection:
  soc_to_soc:
    top: soc_inst_duplicate.regions.front_reg
    bot: soc_inst.regions.front_reg
    thickness: 0.0
  soc_to_virtual:
    top: soc_inst.regions.back_reg
    bot: ~
    thickness: 0.0