Industrial MESBox Controller Design

Configure 100Ω Ethernet rules, route the Ethernet pairs first, then run full DRC.
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.
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
U61 TXRX2P_A - J2 TRD1+
U61 TXRX2M_C - J2 TRD3-
U61 TXRX2P_B - J2 TRD2+
J2 ~ - U61 LED2_1
U61 TXRX2M_A - J2 TRD1-
R53 P2 - J2 ~
U61 TXRX2P_C - J2 TRD3+
J2 SHIELD__5 - J1 SHIELD
U61 TXRX2M_D - J2 TRD4-
U61 TXRX2M_B - J2 TRD2-
J1 TRCT4 - J2 TRCT1
J2 ~ - U61 LED2_0
J2 TRCT4 - J3 TRCT1
U61 TXRX2P_D - J2 TRD4+
R54 P2 - J2 ~
J2


Industrial MESBox Controller thumbnail
Industrial 24 V DC MESBox controller with embedded Linux SOM, STM32 real-time I/O, triple RJ45 Ethernet, TFT display, isolated inputs, protected transistor outputs, offline memory, surge/reverse-polarity protection, and EMC-focused layout constraints.

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