KSZ8091RNBIA-TR

{
  "slug": "ksz8091rnbia-tr",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Ethernet Transceivers, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "ksz8091rnbia-tr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ksz8091rnbia-tr.kicad_sym",
    "ksz8091rnbia-tr.kicad_mod",
    "ksz8091rnbia-tr.glb",
    "ksz8091rnbia-tr.step",
    "ksz8091rnbia-tr.lbr",
    "docs/hero.png",
    "docs/ksz8091rnbia-tr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ksz8091rnbia-tr-hero.glb",
    "ksz8091rnbia-tr-hero.overlay.json",
    "ksz8091rnbia-tr-etched.glb"
  ],
  "component": {
    "mpn": "KSZ8091RNBIA-TR",
    "manufacturer": "Microchip Tech",
    "package": "QFN-32-EP(5x5)",
    "pin_count": 33,
    "category": "Interface",
    "subcategory": "Ethernet Transceivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589798036202422272",
    "parts": {
      "symbol": "ksz8091rnbia-tr.kicad_sym",
      "footprint": "ksz8091rnbia-tr.kicad_mod",
      "model_3d": "ksz8091rnbia-tr-hero.glb",
      "model_3d_plain": "ksz8091rnbia-tr-etched.glb",
      "model_3d_step": "ksz8091rnbia-tr-etched.step",
      "model_3d_step_plain": "ksz8091rnbia-tr.step",
      "lbr": "ksz8091rnbia-tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C631649",
      "digikey": "KSZ8091RNBIA-TR-ND",
      "mouser": "998-KSZ8091RNBIA-TR"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T00:34:11Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "KSZ8091RNBIA-TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "998-KSZ8091RNBIA-TR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "2",
        "name": "VDD_1.2",
        "type": "power_out",
        "description": "1.2V core VDD supplied by the KSZ8091RNB itself; decouple with 2.2 μF and 0.1 μF capacitors to ground."
      },
      {
        "number": "3",
        "name": "VDDA_3.3",
        "type": "power_in",
        "description": "3.3V analog VDD."
      },
      {
        "number": "4",
        "name": "RXM",
        "type": "bidirectional",
        "description": "Physical receive or transmit signal (- differential)."
      },
      {
        "number": "5",
        "name": "RXP",
        "type": "bidirectional",
        "description": "Physical receive or transmit signal (+ differential)."
      },
      {
        "number": "6",
        "name": "TXM",
        "type": "bidirectional",
        "description": "Physical transmit or receive signal (- differential)."
      },
      {
        "number": "7",
        "name": "TXP",
        "type": "bidirectional",
        "description": "Physical transmit or receive signal (+ differential)."
      },
      {
        "number": "8",
        "name": "XO",
        "type": "output",
        "description": "Crystal feedback for the 25 MHz crystal; this pin is a no connect if an oscillator or external clock source is used."
      },
      {
        "number": "9",
        "name": "XI",
        "type": "input",
        "description": "25 MHz mode: 25 MHz ±50 ppm crystal/oscillator/external clock input; 50 MHz mode: 50 MHz ±50 ppm oscillator/external clock input."
      },
      {
        "number": "10",
        "name": "REXT",
        "type": "input",
        "description": "Sets the PHY transmit output current; connect a 6.49 kΩ resistor to ground on this pin."
      },
      {
        "number": "11",
        "name": "MDIO",
        "type": "bidirectional",
        "description": "Management Interface (MII) data I/O; has a weak pull-up, is open-drain, and requires an external 1.0 kΩ pull-up resistor."
      },
      {
        "number": "12",
        "name": "MDC",
        "type": "input",
        "description": "Management Interface (MII) clock input, synchronous to the MDIO data pin."
      },
      {
        "number": "13",
        "name": "PHYAD0",
        "type": "bidirectional",
        "description": "Pull-up/pull-down value is latched as PHYADDR[0] at de-assertion of reset."
      },
      {
        "number": "14",
        "name": "PHYAD1",
        "type": "bidirectional",
        "description": "Pull-up/pull-down value is latched as PHYADDR[1] at de-assertion of reset."
      },
      {
        "number": "15",
        "name": "RXD1/PHYAD2",
        "type": "bidirectional",
        "description": "RMII receive data output [1] in RMII mode; in config mode the pull-up/pull-down value is latched as PHYADDR[2] at de-assertion of reset."
      },
      {
        "number": "16",
        "name": "RXD0/DUPLEX",
        "type": "bidirectional",
        "description": "RMII receive data output [0] in RMII mode; in config mode the pull-up/pull-down value is latched as DUPLEX at de-assertion of reset."
      },
      {
        "number": "17",
        "name": "VDDIO",
        "type": "power_in",
        "description": "3.3V, 2.5V, or 1.8V digital VDD."
      },
      {
        "number": "18",
        "name": "CRS_DV/CONFIG2",
        "type": "bidirectional",
        "description": "RMII carrier sense/receive data valid output in RMII mode; in config mode the pull-up/pull-down value is latched as CONFIG2 at de-assertion of reset."
      },
      {
        "number": "19",
        "name": "REF_CLK/B-CAST_OFF",
        "type": "bidirectional",
        "description": "In 25 MHz RMII mode this pin outputs the 50 MHz RMII reference clock to the MAC; in 50 MHz mode it is a no connect; in config mode it is latched as B-CAST_OFF at de-assertion of reset."
      },
      {
        "number": "20",
        "name": "RXER/ISO",
        "type": "bidirectional",
        "description": "RMII receive error output in RMII mode; in config mode the pull-up/pull-down value is latched as ISOLATE at de-assertion of reset."
      },
      {
        "number": "21",
        "name": "INTRP/PME_N2/NAND_Tree#",
        "type": "bidirectional",
        "description": "Programmable interrupt output (active low by default, set by Register 1Fh bit [9]) or PME_N output (pin option 2) asserted low on a WOL event; weak pull-up and open-drain, requiring an external 1.0 kΩ pull-up to VDDIO for interrupt and PME functions; latched as NAND Tree# at de-assertion of reset."
      },
      {
        "number": "22",
        "name": "PME_EN",
        "type": "bidirectional",
        "description": "Pull-up/pull-down value is latched as PME_EN at de-assertion of reset."
      },
      {
        "number": "23",
        "name": "TXEN",
        "type": "input",
        "description": "RMII transmit enable input."
      },
      {
        "number": "24",
        "name": "TXD0",
        "type": "input",
        "description": "RMII transmit data input [0], synchronous with the 50 MHz RMII reference clock and valid when TXEN is asserted."
      },
      {
        "number": "25",
        "name": "TXD1",
        "type": "input",
        "description": "RMII transmit data input [1], synchronous with the 50 MHz RMII reference clock and valid when TXEN is asserted."
      },
      {
        "number": "26",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect - this pin is not bonded and can be left floating."
      },
      {
        "number": "27",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect - this pin is not bonded and can be left floating."
      },
      {
        "number": "28",
        "name": "CONFIG0",
        "type": "bidirectional",
        "description": "Pull-up/pull-down value is latched as CONFIG0 at de-assertion of reset."
      },
      {
        "number": "29",
        "name": "CONFIG1",
        "type": "bidirectional",
        "description": "Pull-up/pull-down value is latched as CONFIG1 at de-assertion of reset."
      },
      {
        "number": "30",
        "name": "LED0/PME_N1/NWAYEN",
        "type": "bidirectional",
        "description": "Programmable LED0 output; PME_N output (pin option 1) when enabled, open-drain with weak pull-up and requiring an external 1.0 kΩ pull-up to VDDIO; in config mode latched as auto-negotiation enable (Register 0h bit [12]) at de-assertion of reset."
      },
      {
        "number": "31",
        "name": "LED1/SPEED",
        "type": "bidirectional",
        "description": "Programmable LED1 output; in config mode latched as SPEED (Register 0h bit [13]) at de-assertion of reset."
      },
      {
        "number": "32",
        "name": "RST#",
        "type": "input",
        "description": "Chip reset, active low."
      },
      {
        "number": "33",
        "name": "PADDLE",
        "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 KSZ8091RNBIA-TR is not decoded in the provided pages. The datasheet covers the KSZ809; Only 36 of 80 pages were supplied. The package outline and the exposed-paddle dimensions (page 74) w; The exposed paddle is printed as 'PADDLE' (GND) under the package and has no numeric pin number in t",
          "exposed pad 33 added from the footprint",
          "1/33 pins cited to the wrong page (name found elsewhere): ['8:XO@p10']"
        ],
        "pages_sent": 36,
        "cost_usd": 0.1794,
        "at": "2026-10-19T00:33:55"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589798036202422272",
        "pages": 80,
        "sha256": "a7e3aab56aae2ff4",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ksz8091rnbia-tr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          5.0,
          0.875
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ksz8091rnbia-tr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          5.0,
          0.875
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "844b73fb08ec97a0645cf1ff1807757028a66aa9e4407df781b9049bd094359a",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}