🚀 High-Speed Gigabit Ethernet Interface

Welcome! This repository contains the complete hardware design files for a custom-built, 6-layer Gigabit Ethernet interface board.

The design is centered around the powerful STM32F746NGH6 (an ARM Cortex-M7 MCU) and the DP83867IR Gigabit PHY. The entire layout was planned to meet strict high-speed design rules, featuring a robust multi-rail power supply and controlled impedance routing for 1Gbps performance.

🛠️ Key Features & Components

• Brain (MCU): STM32F746NGH6 (ARM Cortex-M7)
• Translator (PHY): DP83867IRPAPT (10/100/1000 Mbps Gigabit PHY)
• Data Interface: RGMII
• Port (Connector): ARJM11D7-502-AB-EW2 (A shielded Gigabit MagJack with integrated LEDs)
• Power Supply: 5V USB-C input, feeding a "power tree" of four independent LDOs for ultra-clean +3.3V, +2.5V, +1.8V, and +1.1V rails.
• PCB: Custom 6-layer, 80x50mm board with controlled impedance routing.
• Debug: Standard 10-pin ARM SWD (Serial Wire Debug) header.

✅ Hardware Project Status: Complete!

This repository covers the complete hardware design and manufacturing file generation. All phases of the hardware build are finished.

• ✅ Phase 1: Component Selection
  • Selected and verified the core MCU, PHY, MagJack, and all power components for Gigabit-speed requirements.
• ✅ Phase 2: Schematic Design
  • Created the full electronic blueprint, connecting all components and defining all power and signal nets.
• ✅ Phase 3: Pre-Layout Checks
  • Ran a full Electrical Rules Check (ERC) and assigned all physical component footprints.
• ✅ Phase 4: PCB Layout
  • Designed the 6-layer stackup, floorplanned all components, poured all ground and power planes, and hand-routed all 17 critical high-speed differential and RGMII traces.
• ✅ Phase 5: Manufacturing File Generation
  • Generated the final Gerber and Drill files (.zip) required for fabrication.