KSZ8863MLLI

{
  "slug": "ksz8863mlli",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Ethernet ICs, LQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface ics",
    "ksz8863mlli",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ksz8863mlli.kicad_sym",
    "ksz8863mlli.kicad_mod",
    "ksz8863mlli.glb",
    "ksz8863mlli.step",
    "ksz8863mlli.lbr",
    "docs/hero.png",
    "docs/ksz8863mlli-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ksz8863mlli-hero.glb",
    "ksz8863mlli-hero.overlay.json",
    "ksz8863mlli-etched.glb"
  ],
  "component": {
    "mpn": "KSZ8863MLLI",
    "manufacturer": "Microchip Tech",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Interface ICs",
    "subcategory": "Ethernet ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/2b113a34ccdc8fbf828d17f3dca87650.pdf",
    "parts": {
      "symbol": "ksz8863mlli.kicad_sym",
      "footprint": "ksz8863mlli.kicad_mod",
      "model_3d": "ksz8863mlli-hero.glb",
      "model_3d_plain": "ksz8863mlli-etched.glb",
      "model_3d_step": "ksz8863mlli-etched.step",
      "model_3d_step_plain": "ksz8863mlli.step",
      "lbr": "ksz8863mlli.lbr"
    },
    "distributor_links": {
      "lcsc": "C219151",
      "digikey": "576-3751-ND",
      "mouser": "998-KSZ8863MLLI"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T01:17:59Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "576-3751-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "998-KSZ8863MLLI",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RXM1",
        "type": "bidirectional",
        "description": "Port 1 physical receive or transmit signal, negative differential."
      },
      {
        "number": "2",
        "name": "RXP1",
        "type": "bidirectional",
        "description": "Port 1 physical receive or transmit signal, positive differential."
      },
      {
        "number": "3",
        "name": "TXM1",
        "type": "bidirectional",
        "description": "Port 1 physical transmit or receive signal, negative differential."
      },
      {
        "number": "4",
        "name": "TXP1",
        "type": "bidirectional",
        "description": "Port 1 physical transmit or receive signal, positive differential."
      },
      {
        "number": "5",
        "name": "VDDA_3.3",
        "type": "power_in",
        "description": "3.3V analog VDD supply."
      },
      {
        "number": "6",
        "name": "ISET",
        "type": "output",
        "description": "Sets physical transmit output current; pull down to ground with an 11.8 kΩ 1% resistor."
      },
      {
        "number": "7",
        "name": "VDDA_1.8",
        "type": "power_in",
        "description": "1.8V analog core power input, supplied from VDDCO (pin 42)."
      },
      {
        "number": "8",
        "name": "RXM2",
        "type": "bidirectional",
        "description": "Port 2 physical receive or transmit signal, negative differential."
      },
      {
        "number": "9",
        "name": "RXP2",
        "type": "bidirectional",
        "description": "Port 2 physical receive or transmit signal, positive differential."
      },
      {
        "number": "10",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "11",
        "name": "TXM2",
        "type": "bidirectional",
        "description": "Port 2 physical transmit or receive signal, negative differential."
      },
      {
        "number": "12",
        "name": "TXP2",
        "type": "bidirectional",
        "description": "Port 2 physical transmit or receive signal, positive differential."
      },
      {
        "number": "13",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "14",
        "name": "X1",
        "type": "input",
        "description": "25 MHz or 50 MHz crystal or oscillator clock input (±50 ppm); with an oscillator, X1 connects to a 3.3V tolerant oscillator, and the clock should be applied before reset goes high."
      },
      {
        "number": "15",
        "name": "X2",
        "type": "output",
        "description": "Crystal connection for the 25/50 MHz clock; no connect when an oscillator drives X1."
      },
      {
        "number": "16",
        "name": "SMTXEN3",
        "type": "input",
        "description": "Switch MII transmit enable, with internal pull-up."
      },
      {
        "number": "17",
        "name": "SMTXD33/EN_REFCLKO_3",
        "type": "input",
        "description": "On MLL, switch MII transmit data bit 3 (EN_REFCLKO_3 strap applies to RLL only), with internal pull-up."
      },
      {
        "number": "18",
        "name": "SMTXD32",
        "type": "input",
        "description": "Switch MII transmit data bit 2, with internal pull-up."
      },
      {
        "number": "19",
        "name": "SMTXD31",
        "type": "input",
        "description": "Switch MII transmit data bit 1, with internal pull-up."
      },
      {
        "number": "20",
        "name": "SMTXD30",
        "type": "input",
        "description": "Switch MII transmit data bit 0, with internal pull-up."
      },
      {
        "number": "21",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "22",
        "name": "VDDIO",
        "type": "power_in",
        "description": "3.3V, 2.5V, or 1.8V digital IO supply input, to be well decoupled."
      },
      {
        "number": "23",
        "name": "SMTXC3/REFCLKI_3",
        "type": "bidirectional",
        "description": "On MLL, switch MII transmit clock: output in PHY MII mode and SNI mode, input in MAC MII mode."
      },
      {
        "number": "24",
        "name": "SMTXER3/MII_LINK_3",
        "type": "input",
        "description": "Switch port 3 MII transmit error; in MII PHY mode 0 = link indicator from host, 1 = no link on port 3 and enables bypass mode; internal pull-down."
      },
      {
        "number": "25",
        "name": "SMRXDV3",
        "type": "bidirectional",
        "description": "Switch MII receive data valid; strap option for port 1 duplex (P1DPX): PU = full-duplex, PD = half-duplex."
      },
      {
        "number": "26",
        "name": "SMRXD33/REFCLKO_3",
        "type": "bidirectional",
        "description": "On MLL, switch MII receive data bit 3; strap option to enable auto-negotiation on port 2 (P2ANEN), PU = enable, PD = disable."
      },
      {
        "number": "27",
        "name": "SMRXD32",
        "type": "bidirectional",
        "description": "Switch MII receive data bit 2; strap option for port 2 speed (P2SPD), PU = 100BT, PD = 10BT when P2ANEN = 0."
      },
      {
        "number": "28",
        "name": "SMRXD31",
        "type": "bidirectional",
        "description": "Switch MII receive data bit 1; strap option for port 2 duplex (P2DPX), PU = full-duplex, PD = half-duplex."
      },
      {
        "number": "29",
        "name": "SMRXD30",
        "type": "bidirectional",
        "description": "Switch MII receive data bit 0; strap option for port 2 forced flow control (P2FFC), PU = always enabled, PD = determined by auto-negotiation."
      },
      {
        "number": "30",
        "name": "SMRXC3",
        "type": "bidirectional",
        "description": "Switch MII receive clock: output in PHY MII mode, input in MAC MII mode."
      },
      {
        "number": "31",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "32",
        "name": "VDDC",
        "type": "power_in",
        "description": "1.8V digital core power input, supplied from VDDCO (pin 42)."
      },
      {
        "number": "33",
        "name": "SCOL3",
        "type": "bidirectional",
        "description": "Switch MII collision detect; input with internal pull-up during reset, output otherwise."
      },
      {
        "number": "34",
        "name": "SCRS3",
        "type": "bidirectional",
        "description": "Switch MII carrier sense; input with internal pull-up during reset, output otherwise."
      },
      {
        "number": "35",
        "name": "INTRN",
        "type": "output",
        "description": "Active-low interrupt to host CPU indicating an interrupt status bit is set on lost link (registers 187 and 188); internal pull-up."
      },
      {
        "number": "36",
        "name": "SCL_MDC",
        "type": "bidirectional",
        "description": "Clock for SPI slave/I2C slave (input), I2C master (output) and MIIM (input)."
      },
      {
        "number": "37",
        "name": "SDA_MDIO",
        "type": "bidirectional",
        "description": "Serial data: SPI slave data input, I2C data input/output, or MIIM data input/output; external pull-up needed when in use."
      },
      {
        "number": "38",
        "name": "SPIQ",
        "type": "bidirectional",
        "description": "SPI slave serial data output (external pull-up needed when in use); strap option for port 1 forced flow control (P1FFC), PU = always enabled, PD = by auto-negotiation."
      },
      {
        "number": "39",
        "name": "SPISN",
        "type": "input",
        "description": "SPI slave chip select, active-low; high deselects the device and tri-states SPIQ; external pull-up needed when using SPI or MDC/MDIO mode."
      },
      {
        "number": "40",
        "name": "VDDIO",
        "type": "power_in",
        "description": "3.3V, 2.5V, or 1.8V digital IO supply input, to be well decoupled."
      },
      {
        "number": "41",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "42",
        "name": "VDDCO",
        "type": "power_out",
        "description": "1.8V internal LDO regulator output powering VDDA_1.8 and VDDC; do not connect an external supply, and a ferrite bead is requested between analog and digital 1.8V."
      },
      {
        "number": "43",
        "name": "P1LED1",
        "type": "bidirectional",
        "description": "Port 1 LED indicator (default speed); strap option for port 1 speed (P1SPD), PU = 100BT, PD = 10BT when P1ANEN = 0."
      },
      {
        "number": "44",
        "name": "P1LED0",
        "type": "bidirectional",
        "description": "Port 1 LED indicator (default link/activity); strap option to enable port 1 auto-negotiation (P1ANEN), PU = enable, PD = disable (default)."
      },
      {
        "number": "45",
        "name": "P2LED1",
        "type": "bidirectional",
        "description": "Port 2 LED indicator (default speed); with P2LED0 straps serial bus mode: [0,0] I2C master, [0,1] I2C slave, [1,0] SPI slave, [1,1] SMI/MIIM."
      },
      {
        "number": "46",
        "name": "P2LED0",
        "type": "bidirectional",
        "description": "Port 2 LED indicator (default link/activity); with P2LED1 straps serial bus configuration mode."
      },
      {
        "number": "47",
        "name": "RSTN",
        "type": "input",
        "description": "Hardware reset, active-low, with internal pull-up."
      },
      {
        "number": "48",
        "name": "FXSD1",
        "type": "input",
        "description": "Fiber signal detect on FLL; on MLL no connection or connect to analog ground through a 1 kΩ pull-down resistor."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin table is shared by MLL/FLL/RLL; MLL function was chosen for multi-function pins (17, 23, 26, 48); ISET is listed as type O in the datasheet, though it is an analog resistor-programming pin; mapped t; Bidirectional types for Ipu/O and Ipd/O strap pins (input during reset, output otherwise) were infer"
        ],
        "pages_sent": 25,
        "cost_usd": 0.3057,
        "at": "2026-10-27T01:17:38"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/2b113a34ccdc8fbf828d17f3dca87650.pdf",
        "pages": 92,
        "sha256": "630e943d040b893a",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 48,
        "described": 48,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ksz8863mlli.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.0,
          9.0,
          1.5
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "9dea352d93177c2904afd7d7b68ea8855ce1ab691f69f8b3e13655600514b6bf",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ksz8863mlli-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": "7d9f9bc400c6bb065daea89fda9193c0fb1e0b447f6740a2e9124fb7ae505c8a",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}