U2 to U4 Connection Plan


  • Set PB20/A0_6's layer to "Top"
  • Set PB20/A0_6's connectedLayers to "Top"
  • Set PB20/A0_6's size to "10mil"
  • Set PB20/A0_6's minKeepOut to "net(20mil) polygon(20mil)"
  • Set PB20/A0_6's autoLayoutPriority to "1"
  • Set PB20/A0_6's preferredTraceWidths to "10mil"
  • Set PA24/A0_3's layer to "Top"
  • Set PA24/A0_3's connectedLayers to "Top"
  • Set PA24/A0_3's size to "10mil"
  • Set PA24/A0_3's minKeepOut to "net(20mil) polygon(20mil)"
  • Set PA24/A0_3's autoLayoutPriority to "1"
  • Set PA24/A0_3's preferredTraceWidths to "10mil"
  • Set PB18/A1_5's layer to "Top"
  • Set PB18/A1_5's connectedLayers to "Top"
  • Set PB18/A1_5's size to "10mil"
  • Set PB18/A1_5's minKeepOut to "net(20mil) polygon(20mil)"
  • Set PB18/A1_5's autoLayoutPriority to "1"
  • Set PB18/A1_5's preferredTraceWidths to "10mil"
  • Set PA26/A0_1 INT TO HOST's layer to "Top"
  • Set PA26/A0_1 INT TO HOST's connectedLayers to "Top"
  • Set PA26/A0_1 INT TO HOST's size to "10mil"
  • Set PA26/A0_1 INT TO HOST's minKeepOut to "net(20mil) polygon(20mil)"
  • Set PA26/A0_1 INT TO HOST's autoLayoutPriority to "1"
  • Set PA26/A0_1 INT TO HOST's preferredTraceWidths to "10mil"
  • Set VDD's layer to "Top"
  • Set VDD's connectedLayers to "Top"
  • Set VDD's size to "10mil"
  • Set VDD's minKeepOut to "net(20mil) polygon(20mil)"
  • Set VDD's autoLayoutPriority to "1"
  • Set VDD's preferredTraceWidths to "10mil"
  • Set PA21/A1_7/VREF-'s layer to "Top"
  • Set PA21/A1_7/VREF-'s connectedLayers to "Top"
  • Set PA21/A1_7/VREF-'s size to "10mil"
  • Set PA21/A1_7/VREF-'s minKeepOut to "net(20mil) polygon(20mil)"
  • Set PA21/A1_7/VREF-'s autoLayoutPriority to "1"
  • Set PA21/A1_7/VREF-'s preferredTraceWidths to "10mil"
  • Set PA23 VREF+'s layer to "Top"
  • Set PA23 VREF+'s connectedLayers to "Top"
  • Set PA23 VREF+'s size to "10mil"
  • Set PA23 VREF+'s minKeepOut to "net(20mil) polygon(20mil)"
  • Set PA23 VREF+'s autoLayoutPriority to "1"
  • Set PA23 VREF+'s preferredTraceWidths to "10mil"
  • Set PB24/A0_5's layer to "Top"
  • Set PB24/A0_5's connectedLayers to "Top"
  • Set PB24/A0_5's size to "10mil"
  • Set PB24/A0_5's minKeepOut to "net(20mil) polygon(20mil)"
  • Set PB24/A0_5's autoLayoutPriority to "1"
  • Set PB24/A0_5's preferredTraceWidths to "10mil"
  • Set PA25 GUARDBAND's layer to "Top"
  • Set PA25 GUARDBAND's connectedLayers to "Top"
  • Set PA25 GUARDBAND's size to "10mil"
  • Set PA25 GUARDBAND's minKeepOut to "net(20mil) polygon(20mil)"
  • Set PA25 GUARDBAND's autoLayoutPriority to "1"
  • Set PA25 GUARDBAND's preferredTraceWidths to "10mil"
  • Set Net 49's layer to "Top"
  • Set Net 49's connectedLayers to "Top"
  • Set Net 49's size to "10mil"
  • Set Net 49's minKeepOut to "net(20mil) polygon(20mil)"
  • Set Net 49's autoLayoutPriority to "1"
  • Set Net 49's preferredTraceWidths to "10mil"
  • Set PA22/A0_7's layer to "Top"
  • Set PA22/A0_7's connectedLayers to "Top"
  • Set PA22/A0_7's size to "10mil"
  • Set PA22/A0_7's minKeepOut to "net(20mil) polygon(20mil)"
  • Set PA22/A0_7's autoLayoutPriority to "1"
  • Set PA22/A0_7's preferredTraceWidths to "10mil"
  • Set PA27/A0_0 I2C or UART/SPI's layer to "Top"
  • Set PA27/A0_0 I2C or UART/SPI's connectedLayers to "Top"
  • Set PA27/A0_0 I2C or UART/SPI's size to "10mil"
  • Set PA27/A0_0 I2C or UART/SPI's minKeepOut to "net(20mil) polygon(20mil)"
  • Set PA27/A0_0 I2C or UART/SPI's autoLayoutPriority to "1"
  • Set PA27/A0_0 I2C or UART/SPI's preferredTraceWidths to "10mil"
Work done
  • Identified the U2↔J10 nets: PB18/A1_5, Net 49, PA21/A1_7/VREF-, PA22/A0_7, PB20/A0_6, PB24/A0_5, PA23 VREF+, PA24/A0_3, PA25 GUARDBAND, PA26/A0_1 INT TO HOST, PA27/A0_0 I2C or UART/SPI, and VDD.
  • Applied Top Layer-only, 10 mil trace width, 20 mil clearance, and highest routing priority constraints to those nets.
  • Verified the stackup is 6-layer with Top as a signal layer, and the existing trace rule remains 10 mil with clearance rules at about 20 mil.
Success criteria review
  • ✅ U2↔J10 nets identified and constrained to Top Layer.
  • ✅ 10 mil trace width and 20 mil clearance were preserved/applied for those nets.
  • ❌ Actual copper routing and clean DRC/airwire closure could not be completed here; the current DRC still reports airwires in the design, including U2↔J10-related airwires.
Next steps
Run the PCB editor routing pass for the constrained U2↔J10 nets, then re-check DRC/airwires. Routing guidance requires resolving airwires, then re-validating DRC after the routing pass .
Show remaining airwires
Check routing blockers
Export DRC report
List layer violations

IPP018C_Schematic-1 wpTi

IPP018C_Schematic-1 wpTi thumbnail