KSZ9031RNXCC-TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "ksz9031rnxcc-tr",
  "title": "KSZ9031RNXCC-TR",
  "brief": "Microchip Tech Ethernet Transceivers, QFN-48-EP(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "ksz9031rnxcc-tr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "KSZ9031RNXCC-TR",
    "manufacturer": "Microchip Tech",
    "package": "QFN-48-EP(7x7)",
    "pin_count": 49,
    "category": "Interface",
    "subcategory": "Ethernet Transceivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588906742931054592",
    "parts": {
      "symbol": "ksz9031rnxcc-tr.kicad_sym",
      "footprint": "ksz9031rnxcc-tr.kicad_mod",
      "model_3d": "ksz9031rnxcc-tr-hero.glb",
      "model_3d_plain": "ksz9031rnxcc-tr-etched.glb",
      "model_3d_step": "ksz9031rnxcc-tr-etched.step",
      "model_3d_step_plain": "ksz9031rnxcc-tr.step",
      "lbr": "ksz9031rnxcc-tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C510875"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T18:07:48Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "AVDDH",
        "type": "power_in",
        "description": "3.3V/2.5V analog VDD for the transceiver, commercial temperature parts only."
      },
      {
        "number": "2",
        "name": "TXRXP_A",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 0 positive signal; BI_DA+ in 1000BASE-T MDI mode and TX+/RX+ in 10/100 modes, depending on MDI or MDI-X configuration."
      },
      {
        "number": "3",
        "name": "TXRXM_A",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 0 negative signal; BI_DA- in 1000BASE-T MDI mode and TX-/RX- in 10/100 modes, depending on MDI or MDI-X configuration."
      },
      {
        "number": "4",
        "name": "AVDDL",
        "type": "power_in",
        "description": "1.2V analog VDD."
      },
      {
        "number": "5",
        "name": "TXRXP_B",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 1 positive signal; BI_DB+ in 1000BASE-T MDI mode and RX+/TX+ in 10/100 modes, depending on MDI or MDI-X configuration."
      },
      {
        "number": "6",
        "name": "TXRXM_B",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 1 negative signal; BI_DB- in 1000BASE-T MDI mode and RX-/TX- in 10/100 modes, depending on MDI or MDI-X configuration."
      },
      {
        "number": "7",
        "name": "TXRXP_C",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 2 positive signal; used in 1000BASE-T mode only and not used in 10/100BASE-T mode."
      },
      {
        "number": "8",
        "name": "TXRXM_C",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 2 negative signal; used in 1000BASE-T mode only and not used in 10/100BASE-T mode."
      },
      {
        "number": "9",
        "name": "AVDDL",
        "type": "power_in",
        "description": "1.2V analog VDD."
      },
      {
        "number": "10",
        "name": "TXRXP_D",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 3 positive signal; used in 1000BASE-T mode only and not used in 10/100BASE-T mode."
      },
      {
        "number": "11",
        "name": "TXRXM_D",
        "type": "bidirectional",
        "description": "Media Dependent Interface pair 3 negative signal; used in 1000BASE-T mode only and not used in 10/100BASE-T mode."
      },
      {
        "number": "12",
        "name": "AVDDH",
        "type": "power_in",
        "description": "3.3V/2.5V analog VDD for the transceiver, commercial temperature parts 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 VDD."
      },
      {
        "number": "15",
        "name": "LED2/PHYAD1",
        "type": "bidirectional",
        "description": "Programmable LED2 output; in config mode the pull-up/pull-down value is latched as PHYAD[1] at power-up/reset."
      },
      {
        "number": "16",
        "name": "DVDDH",
        "type": "power_in",
        "description": "3.3V, 2.5V, or 1.8V digital VDD_I/O."
      },
      {
        "number": "17",
        "name": "LED1/PHYAD0/PME_N1",
        "type": "bidirectional",
        "description": "Programmable LED1 output; in config mode the voltage is latched as PHYAD[0] at power-up/reset, and as PME_N output (pin option 1) it needs a 1.0 kΩ to 4.7 kΩ pull-up to DVDDH."
      },
      {
        "number": "18",
        "name": "DVDDL",
        "type": "power_in",
        "description": "1.2V digital VDD."
      },
      {
        "number": "19",
        "name": "TXD0",
        "type": "input",
        "description": "RGMII TD0 (transmit data 0) input."
      },
      {
        "number": "20",
        "name": "TXD1",
        "type": "input",
        "description": "RGMII TD1 (transmit data 1) input."
      },
      {
        "number": "21",
        "name": "TXD2",
        "type": "input",
        "description": "RGMII TD2 (transmit data 2) input."
      },
      {
        "number": "22",
        "name": "TXD3",
        "type": "input",
        "description": "RGMII TD3 (transmit data 3) input."
      },
      {
        "number": "23",
        "name": "DVDDL",
        "type": "power_in",
        "description": "1.2V digital VDD."
      },
      {
        "number": "24",
        "name": "GTX_CLK",
        "type": "input",
        "description": "RGMII TXC (transmit reference clock) input."
      },
      {
        "number": "25",
        "name": "TX_EN",
        "type": "input",
        "description": "RGMII TX_CTL (transmit control) input."
      },
      {
        "number": "26",
        "name": "DVDDL",
        "type": "power_in",
        "description": "1.2V digital VDD."
      },
      {
        "number": "27",
        "name": "RXD3/MODE3",
        "type": "bidirectional",
        "description": "RGMII RD3 (receive data 3) output; in config mode the pull-up/pull-down value is latched as MODE3 at power-up/reset."
      },
      {
        "number": "28",
        "name": "RXD2/MODE2",
        "type": "bidirectional",
        "description": "RGMII RD2 (receive data 2) output; in config mode the pull-up/pull-down value is latched as MODE2 at power-up/reset."
      },
      {
        "number": "29",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "30",
        "name": "DVDDL",
        "type": "power_in",
        "description": "1.2V digital VDD."
      },
      {
        "number": "31",
        "name": "RXD1/MODE1",
        "type": "bidirectional",
        "description": "RGMII RD1 (receive data 1) output; in config mode the pull-up/pull-down value is latched as MODE1 at power-up/reset."
      },
      {
        "number": "32",
        "name": "RXD0/MODE0",
        "type": "bidirectional",
        "description": "RGMII RD0 (receive data 0) output; in config mode the pull-up/pull-down value is latched as MODE0 at power-up/reset."
      },
      {
        "number": "33",
        "name": "RX_DV/CLK125_EN",
        "type": "bidirectional",
        "description": "RGMII RX_CTL (receive control) output; in config mode latched as CLK125_NDO output enable at power-up/reset."
      },
      {
        "number": "34",
        "name": "DVDDH",
        "type": "power_in",
        "description": "3.3V, 2.5V, or 1.8V digital VDD_I/O."
      },
      {
        "number": "35",
        "name": "RX_CLK/PHYAD2",
        "type": "bidirectional",
        "description": "RGMII RXC (receive reference clock) output; in config mode the pull-up/pull-down value is latched as PHYAD[2] at power-up/reset."
      },
      {
        "number": "36",
        "name": "MDC",
        "type": "input",
        "description": "Management data clock input; the reference clock for MDIO (pin 37), with internal pull-up."
      },
      {
        "number": "37",
        "name": "MDIO",
        "type": "bidirectional",
        "description": "Management data input/output, synchronous to MDC; requires an external 1.0 kΩ to 4.7 kΩ pull-up to DVDDH."
      },
      {
        "number": "38",
        "name": "INT_N/PME_N2",
        "type": "output",
        "description": "Programmable interrupt output (active low by default, set by Register 1Fh bit 14) or PME_N output (pin option 2); needs a 1.0 kΩ to 4.7 kΩ pull-up to DVDDH for interrupt or PME functions."
      },
      {
        "number": "39",
        "name": "DVDDL",
        "type": "power_in",
        "description": "1.2V digital VDD."
      },
      {
        "number": "40",
        "name": "DVDDH",
        "type": "power_in",
        "description": "3.3V, 2.5V, or 1.8V digital VDD_I/O."
      },
      {
        "number": "41",
        "name": "CLK125_NDO/LED_MODE",
        "type": "bidirectional",
        "description": "125 MHz reference clock output for the MAC; in config mode latched as LED_MODE at power-up/reset (pull-up single-LED mode, pull-down tri-color dual-LED mode)."
      },
      {
        "number": "42",
        "name": "RESET_N",
        "type": "input",
        "description": "Active-low chip reset with internal pull-up; strap-in pins are latched on the de-assertion (rising edge) of RESET_N."
      },
      {
        "number": "43",
        "name": "LDO_O",
        "type": "output",
        "description": "On-chip 1.2V LDO controller output that drives the gate of a P-channel MOSFET for the core; it should never be driven externally and can float if 1.2V is supplied and this pin is unused."
      },
      {
        "number": "44",
        "name": "AVDDL_PLL",
        "type": "power_in",
        "description": "1.2V analog VDD for the PLL."
      },
      {
        "number": "45",
        "name": "XO",
        "type": "output",
        "description": "25 MHz crystal feedback; no connect if an oscillator or external clock source is used."
      },
      {
        "number": "46",
        "name": "XI",
        "type": "input",
        "description": "Crystal/oscillator/external clock input; 25 MHz with ±50 ppm tolerance."
      },
      {
        "number": "47",
        "name": "NC",
        "type": "unconnected",
        "description": "Not bonded; may be connected to AVDDH power 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 on this pin."
      },
      {
        "number": "49",
        "name": "EP",
        "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 MPN suffix -TR (tape and reel) is not stated in the supplied text. The package mapping is inferr; The exposed pad is printed as 'Paddle' with name P_GND in Table 2-1, not as a numbered pin. It is li; Pin 48 ISET is typed I/O in the datasheet but functions as a bias-resistor connection. It is kept as",
          "exposed pad 49 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint",
          "1/49 pins cited to the wrong page (name found elsewhere): ['45:XO@p11']"
        ],
        "pages_sent": 36,
        "cost_usd": 0.1838,
        "at": "2026-10-18T18:07:31"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588906742931054592",
        "pages": 79,
        "sha256": "255d9436ffc33b04",
        "source_tier": "lcsc"
      },
      "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": "ksz9031rnxcc-tr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7,
          7,
          0.77
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f2b38b0b4bf967c77e683e8d4599608b9f0503055ec535b93c4ebb5d0163e916",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ksz9031rnxcc-tr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7,
          7,
          0.77
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b2cd78f07c0a56b396e613a547782a09b19489f4019295a71c22174ddf1ad4bc",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "QFN-48-EP(7x7)",
      "Category": "Interface",
      "Pins": "49"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "255d9436ffc33b048b7a3cf9813f449956383ab19f1e98ddcb65519f42ef07ff",
      "rows": [
        {
          "name": "Supply voltage (DVDDL, AVDDL, AVDDL_PLL)",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.14,
          "typ": null,
          "max": 1.38,
          "conditions": "DVDDL, AVDDL, AVDDL_PLL (core, 1.2V)",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage AVDDH @ 3.3V",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3.135,
          "typ": null,
          "max": 3.465,
          "conditions": "AVDDH @ 3.3V",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage AVDDH @ 2.5V",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.375,
          "typ": null,
          "max": 2.625,
          "conditions": "AVDDH @ 2.5V; Commercial temp. only",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage DVDDH @ 3.3V",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3.135,
          "typ": null,
          "max": 3.465,
          "conditions": "DVDDH @ 3.3V",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage DVDDH @ 2.5V",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.375,
          "typ": null,
          "max": 2.625,
          "conditions": "DVDDH @ 2.5V",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage DVDDH @ 1.8V",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.71,
          "typ": null,
          "max": 1.89,
          "conditions": "DVDDH @ 1.8V",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Ambient temperature (commercial KSZ9031RNXC)",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": 0,
          "typ": null,
          "max": 70,
          "conditions": "TA Commercial: KSZ9031RNXC",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Maximum junction temperature",
          "symbol": "TJ max.",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage absolute maximum (DVDDL, AVDDL, AVDDL_PLL)",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 1.8,
          "conditions": "DVDDL, AVDDL, AVDDL_PLL",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage absolute maximum AVDDH",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 5,
          "conditions": "AVDDH",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage absolute maximum DVDDH",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 5,
          "conditions": "DVDDH",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Input voltage (all inputs)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 5,
          "conditions": "all inputs",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (all outputs)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 5,
          "conditions": "all outputs",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Lead temperature (soldering)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "soldering, 10 s",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TS",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 52,
          "source": "datasheet"
        },
        {
          "name": "25 MHz reference clock frequency tolerance (max.)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "ppm",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "25 MHz crystal/oscillator reference clock, Table 10-1; printed ±50 ppm",
          "source_page": 66,
          "source": "datasheet"
        },
        {
          "name": "XI minimum clock VPP swing",
          "symbol": "VPP",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.5,
          "typ": null,
          "max": null,
          "conditions": "XI externally provided clock, direct coupling",
          "source_page": 66,
          "source": "datasheet"
        },
        {
          "name": "XI minimum clock VPP swing with capacitive coupling",
          "symbol": "VPP",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": null,
          "conditions": "XI externally provided clock, series capacitive coupling",
          "source_page": 66,
          "source": "datasheet"
        },
        {
          "name": "XI maximum clock VPP swing",
          "symbol": "VPP",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 3.3,
          "conditions": "printed as 3.3V +5%; +5% not computed",
          "source_page": 66,
          "source": "datasheet"
        },
        {
          "name": "MDIO external pull-up resistor to DVDDH",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "kΩ",
          "min": 1,
          "typ": null,
          "max": 4.7,
          "conditions": "MDIO pin, external pull-up to DVDDH",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "INT_N/PME_N external pull-up resistor to DVDDH",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "kΩ",
          "min": 1,
          "typ": null,
          "max": 4.7,
          "conditions": "Interrupt (active low) and PME functions, external pull-up to DVDDH",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "ISET external resistor to ground",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "kΩ",
          "min": null,
          "typ": 12.1,
          "max": null,
          "conditions": "Connect to ground on ISET pin to set transmit output level",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "ISET external resistor tolerance",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "1% resistor on ISET",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "25 MHz crystal series resistance",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "Ω",
          "min": null,
          "typ": 40,
          "max": null,
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