Industrial MESBox Controller Design
Worked for 15 mins
Completed the Ethernet placement.
Accomplished:
- Placed J1/J2/J3 evenly along the bottom board edge.
- Placed D2–D13 ESD arrays directly behind the RJ45s by port.
- Placed U61 / KSZ9477 centered behind the ESD row.
- Placed X1, C37, and C38 close to U61.
- Kept the Ethernet section on the top layer and inside the 160 × 100 mm board.
- Post-placement layout review shows routing congestion is cleared for the inspected placement.
Open items:
- Design checks still report many unrouted connections; that is expected because traces have not been routed yet.
- Ethernet differential pairs still need controlled-impedance routing.
Suggested next steps:
- Configure/confirm 100 Ω Ethernet differential-pair routing rules.
- Route Ethernet pairs first, with shortest paths from RJ45 → ESD → KSZ9477.
- Route power/ground and remaining control signals.
- Run full DRC after routing.
Configure 100Ω Ethernet rules, route the Ethernet pairs first, then run full DRC.
Thought for 11 sec
I’ll configure the Ethernet nets for 100 Ω differential routing, route the Ethernet pairs first, then run a full DRC and report the remaining board issues.
Thought for 15 sec
I’m blocked because the account has no available ACUs, so I can’t configure routing rules, route traces, or run DRC right now.
Accomplished before this request:
- Ethernet schematic support was completed: RJ45 center taps, LEDs, ESD arrays, KSZ9477 straps/clock/reset/MDIO, and CM4 uplink.
- Ethernet block placement was completed: RJ45s on the board edge, ESD arrays behind them, KSZ9477 behind the protection row, and crystal/load caps near U61.
- Ethernet layout constraints were documented in the project file.
Remaining work when ACUs are available:
- Configure 100 Ω differential-pair rules for all Ethernet pairs.
- Route Ethernet pairs first from RJ45 → ESD → KSZ9477.
- Route remaining power/control nets.
- Run full DRC and fix/report remaining layout violations.
Review constraints
List Ethernet pairs
Manual routing checklist
Estimate pair geometry
