KSZ9031RNXIA

{
  "slug": "ksz9031rnxia",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Ethernet ICs, QFN-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "communication interface chip-uart-485-232",
    "ksz9031rnxia",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "ksz9031rnxia.kicad_sym",
    "ksz9031rnxia.kicad_mod",
    "ksz9031rnxia.glb",
    "ksz9031rnxia.step",
    "ksz9031rnxia.lbr",
    "docs/hero.png",
    "docs/ksz9031rnxia-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ksz9031rnxia-hero.glb",
    "ksz9031rnxia-hero.overlay.json",
    "ksz9031rnxia-etched.glb"
  ],
  "component": {
    "mpn": "KSZ9031RNXIA",
    "manufacturer": "Microchip Tech",
    "package": "QFN-48(7x7)",
    "pin_count": 49,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "Ethernet ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/36c07dbb4aa301dc235ad8babce24710.pdf",
    "parts": {
      "symbol": "ksz9031rnxia.kicad_sym",
      "footprint": "ksz9031rnxia.kicad_mod",
      "model_3d": "ksz9031rnxia-hero.glb",
      "model_3d_plain": "ksz9031rnxia-etched.glb",
      "model_3d_step": "ksz9031rnxia-etched.step",
      "model_3d_step_plain": "ksz9031rnxia.step",
      "lbr": "ksz9031rnxia.lbr"
    },
    "distributor_links": {
      "lcsc": "C2979608",
      "digikey": "576-4346-ND",
      "mouser": "998-KSZ9031RNXIA"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T06:57:37Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "576-4346-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "998-KSZ9031RNXIA",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "AVDDH",
        "type": "power_in",
        "description": "Transceiver analog supply, 3.3V or 2.5V (commercial temperature only)."
      },
      {
        "number": "2",
        "name": "TXRXP_A",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 0 positive signal; carries BI_DA+ in 1000BASE-T MDI mode and TX+/RX+ in 10/100 mode."
      },
      {
        "number": "3",
        "name": "TXRXM_A",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 0 negative signal; carries BI_DA- in 1000BASE-T MDI mode and TX-/RX- in 10/100 mode."
      },
      {
        "number": "4",
        "name": "AVDDL",
        "type": "power_in",
        "description": "1.2V analog core supply."
      },
      {
        "number": "5",
        "name": "TXRXP_B",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 1 positive signal; carries BI_DB+ in 1000BASE-T MDI mode and RX+/TX+ in 10/100 mode."
      },
      {
        "number": "6",
        "name": "TXRXM_B",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 1 negative signal; carries BI_DB- in 1000BASE-T MDI mode and RX-/TX- in 10/100 mode."
      },
      {
        "number": "7",
        "name": "TXRXP_C",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 2 positive signal used in 1000BASE-T mode only; not used in 10/100 mode."
      },
      {
        "number": "8",
        "name": "TXRXM_C",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 2 negative signal used in 1000BASE-T mode only; not used in 10/100 mode."
      },
      {
        "number": "9",
        "name": "AVDDL",
        "type": "power_in",
        "description": "1.2V analog core supply."
      },
      {
        "number": "10",
        "name": "TXRXP_D",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 3 positive signal used in 1000BASE-T mode only; not used in 10/100 mode."
      },
      {
        "number": "11",
        "name": "TXRXM_D",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 3 negative signal used in 1000BASE-T mode only; not used in 10/100 mode."
      },
      {
        "number": "12",
        "name": "AVDDH",
        "type": "power_in",
        "description": "Transceiver analog supply, 3.3V or 2.5V (commercial temperature only)."
      },
      {
        "number": "13",
        "name": "NC",
        "type": "unconnected",
        "description": "Not bonded; may be connected to digital ground for footprint compatibility with the KSZ9021RN."
      },
      {
        "number": "14",
        "name": "DVDDL",
        "type": "power_in",
        "description": "1.2V digital core supply."
      },
      {
        "number": "15",
        "name": "LED2/PHYAD1",
        "type": "bidirectional",
        "description": "Programmable LED2 output; latched as PHYAD[1] during power-up or reset."
      },
      {
        "number": "16",
        "name": "DVDDH",
        "type": "power_in",
        "description": "Digital I/O supply, 3.3V, 2.5V, or 1.8V."
      },
      {
        "number": "17",
        "name": "LED1/PHYAD0/PME_N1",
        "type": "bidirectional",
        "description": "Programmable LED1 output; latched as PHYAD[0] during power-up or reset; alternate function PME_N1 wake-on-LAN output requiring a 1.0 kΩ to 4.7 kΩ pull-up to DVDDH."
      },
      {
        "number": "18",
        "name": "DVDDL",
        "type": "power_in",
        "description": "1.2V digital core supply."
      },
      {
        "number": "19",
        "name": "TXD0",
        "type": "input",
        "description": "RGMII transmit data bit 0 input from the MAC."
      },
      {
        "number": "20",
        "name": "TXD1",
        "type": "input",
        "description": "RGMII transmit data bit 1 input from the MAC."
      },
      {
        "number": "21",
        "name": "TXD2",
        "type": "input",
        "description": "RGMII transmit data bit 2 input from the MAC."
      },
      {
        "number": "22",
        "name": "TXD3",
        "type": "input",
        "description": "RGMII transmit data bit 3 input from the MAC."
      },
      {
        "number": "23",
        "name": "DVDDL",
        "type": "power_in",
        "description": "1.2V digital core supply."
      },
      {
        "number": "24",
        "name": "GTX_CLK",
        "type": "input",
        "description": "RGMII transmit reference clock input (TXC) from the MAC; 125 MHz for 1000 Mbps."
      },
      {
        "number": "25",
        "name": "TX_EN",
        "type": "input",
        "description": "RGMII transmit control input (TX_CTL) from the MAC."
      },
      {
        "number": "26",
        "name": "DVDDL",
        "type": "power_in",
        "description": "1.2V digital core supply."
      },
      {
        "number": "27",
        "name": "RXD3/MODE3",
        "type": "bidirectional",
        "description": "RGMII receive data bit 3 output to the MAC; MODE3 strap latched at power-up or reset."
      },
      {
        "number": "28",
        "name": "RXD2/MODE2",
        "type": "bidirectional",
        "description": "RGMII receive data bit 2 output to the MAC; MODE2 strap latched at power-up or reset."
      },
      {
        "number": "29",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "30",
        "name": "DVDDL",
        "type": "power_in",
        "description": "1.2V digital core supply."
      },
      {
        "number": "31",
        "name": "RXD1/MODE1",
        "type": "bidirectional",
        "description": "RGMII receive data bit 1 output to the MAC; MODE1 strap latched at power-up or reset."
      },
      {
        "number": "32",
        "name": "RXD0/MODE0",
        "type": "bidirectional",
        "description": "RGMII receive data bit 0 output to the MAC; MODE0 strap latched at power-up or reset."
      },
      {
        "number": "33",
        "name": "RX_DV/CLK125_EN",
        "type": "bidirectional",
        "description": "RGMII receive control output (RX_CTL) to the MAC; CLK125_EN strap latched at power-up or reset."
      },
      {
        "number": "34",
        "name": "DVDDH",
        "type": "power_in",
        "description": "Digital I/O supply, 3.3V, 2.5V, or 1.8V."
      },
      {
        "number": "35",
        "name": "RX_CLK/PHYAD2",
        "type": "bidirectional",
        "description": "RGMII receive reference clock output (RXC) to the MAC; PHYAD[2] strap latched at power-up or reset."
      },
      {
        "number": "36",
        "name": "MDC",
        "type": "input",
        "description": "Management data clock input for MDIO."
      },
      {
        "number": "37",
        "name": "MDIO",
        "type": "bidirectional",
        "description": "Management data input/output, synchronous to MDC; requires a 1.0 kΩ to 4.7 kΩ pull-up to DVDDH."
      },
      {
        "number": "38",
        "name": "INT_N/PME_N2",
        "type": "output",
        "description": "Interrupt output, active low by default; alternate PME_N2 wake-on-LAN output requiring a 1.0 kΩ to 4.7 kΩ pull-up to DVDDH."
      },
      {
        "number": "39",
        "name": "DVDDL",
        "type": "power_in",
        "description": "1.2V digital core supply."
      },
      {
        "number": "40",
        "name": "DVDDH",
        "type": "power_in",
        "description": "Digital I/O supply, 3.3V, 2.5V, or 1.8V."
      },
      {
        "number": "41",
        "name": "CLK125_NDO/LED_MODE",
        "type": "bidirectional",
        "description": "125 MHz reference clock output for the MAC; LED_MODE strap latched at power-up or reset."
      },
      {
        "number": "42",
        "name": "RESET_N",
        "type": "input",
        "description": "Chip reset, active low; strap pins are latched on the rising edge of RESET_N."
      },
      {
        "number": "43",
        "name": "LDO_O",
        "type": "output",
        "description": "On-chip 1.2V LDO controller output driving the gate of an external P-channel MOSFET; must never be driven externally."
      },
      {
        "number": "44",
        "name": "AVDDL_PLL",
        "type": "power_in",
        "description": "1.2V analog supply for the PLL."
      },
      {
        "number": "45",
        "name": "XO",
        "type": "output",
        "description": "25 MHz crystal feedback; left unconnected when an oscillator or external clock is used."
      },
      {
        "number": "46",
        "name": "XI",
        "type": "input",
        "description": "25 MHz crystal, oscillator, or external clock input with ±50 ppm tolerance."
      },
      {
        "number": "47",
        "name": "NC",
        "type": "unconnected",
        "description": "Not bonded; may be connected to AVDDH for footprint compatibility with the KSZ9021RN."
      },
      {
        "number": "48",
        "name": "ISET",
        "type": "bidirectional",
        "description": "Sets the transmit output level; connect a 12.1 kΩ 1% resistor to ground."
      },
      {
        "number": "49",
        "name": "P_GND",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The standard KSZ9031RNX QFN-48 (7x7) pinout is given. The datasheet's product identification system ",
          "1/49 pins cited to the wrong page (name found elsewhere): ['45:XO@p11']"
        ],
        "pages_sent": 42,
        "cost_usd": 0.0645,
        "at": "2026-10-27T06:57:10"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/36c07dbb4aa301dc235ad8babce24710.pdf",
        "pages": 83,
        "sha256": "700e716f1afe7794",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 49,
        "described": 49,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ksz9031rnxia.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          7.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f2b38b0b4bf967c77e683e8d4599608b9f0503055ec535b93c4ebb5d0163e916",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ksz9031rnxia-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "64aa88c1721ffe586ca267e806265886fdf36f6fa131019d79ddf7b0b56b3aa5",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}