KSZ8895FQXI

{
  "slug": "ksz8895fqxi",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Interface - Specialized, QFP-128(14x20). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "communication interface chip-uart-485-232",
    "ksz8895fqxi",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "path": "docs/hero.png"
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  "component": {
    "mpn": "KSZ8895FQXI",
    "manufacturer": "Microchip Tech",
    "package": "QFP-128(14x20)",
    "pin_count": 128,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "Interface - Specialized",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a7dd59c20530c117b43dc99b3012f19a.pdf",
    "parts": {
      "symbol": "ksz8895fqxi.kicad_sym",
      "footprint": "ksz8895fqxi.kicad_mod",
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      "lbr": "ksz8895fqxi.lbr"
    },
    "distributor_links": {
      "lcsc": "C639478",
      "digikey": "KSZ8895FQXI-ND",
      "mouser": "579-KSZ8895FQXI"
    },
    "distributor_check": {
      "checked_at": "2026-10-31T12:38:24Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "KSZ8895FQXI-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "579-KSZ8895FQXI",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "MDI-XDIS",
        "type": "input",
        "description": "Disables auto MDI/MDI-X on all ports when pulled up; pull-down (default) gives normal operation."
      },
      {
        "number": "2",
        "name": "GNDA",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "3",
        "name": "VDDAR",
        "type": "power_in",
        "description": "1.2V analog VDD."
      },
      {
        "number": "4",
        "name": "RXP1",
        "type": "input",
        "description": "Port 1 physical receive signal + (differential)."
      },
      {
        "number": "5",
        "name": "RXM1",
        "type": "input",
        "description": "Port 1 physical receive signal - (differential)."
      },
      {
        "number": "6",
        "name": "GNDA",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "7",
        "name": "TXP1",
        "type": "output",
        "description": "Port 1 physical transmit signal + (differential)."
      },
      {
        "number": "8",
        "name": "TXM1",
        "type": "output",
        "description": "Port 1 physical transmit signal - (differential)."
      },
      {
        "number": "9",
        "name": "VDDAT",
        "type": "power_in",
        "description": "3.3V analog VDD."
      },
      {
        "number": "10",
        "name": "RXP2",
        "type": "input",
        "description": "Port 2 physical receive signal + (differential)."
      },
      {
        "number": "11",
        "name": "RXM2",
        "type": "input",
        "description": "Port 2 physical receive signal - (differential)."
      },
      {
        "number": "12",
        "name": "GNDA",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "13",
        "name": "TXP2",
        "type": "output",
        "description": "Port 2 physical transmit signal + (differential)."
      },
      {
        "number": "14",
        "name": "TXM2",
        "type": "output",
        "description": "Port 2 physical transmit signal - (differential)."
      },
      {
        "number": "15",
        "name": "VDDAR",
        "type": "power_in",
        "description": "1.2V analog VDD."
      },
      {
        "number": "16",
        "name": "GNDA",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "17",
        "name": "ISET",
        "type": "passive",
        "description": "Sets the physical transmit output current; pull down with a 12.4 kΩ 1% resistor."
      },
      {
        "number": "18",
        "name": "VDDAT",
        "type": "power_in",
        "description": "3.3V analog VDD."
      },
      {
        "number": "19",
        "name": "RXP3",
        "type": "input",
        "description": "Port 3 physical receive signal + (differential)."
      },
      {
        "number": "20",
        "name": "RXM3",
        "type": "input",
        "description": "Port 3 physical receive signal - (differential)."
      },
      {
        "number": "21",
        "name": "GNDA",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "22",
        "name": "TXP3",
        "type": "output",
        "description": "Port 3 physical transmit signal + (differential)."
      },
      {
        "number": "23",
        "name": "TXM3",
        "type": "output",
        "description": "Port 3 physical transmit signal - (differential)."
      },
      {
        "number": "24",
        "name": "VDDAT",
        "type": "power_in",
        "description": "3.3V analog VDD."
      },
      {
        "number": "25",
        "name": "RXP4",
        "type": "input",
        "description": "Port 4 physical receive signal + (differential)."
      },
      {
        "number": "26",
        "name": "RXM4",
        "type": "input",
        "description": "Port 4 physical receive signal - (differential)."
      },
      {
        "number": "27",
        "name": "GNDA",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "28",
        "name": "TXP4",
        "type": "output",
        "description": "Port 4 physical transmit signal + (differential)."
      },
      {
        "number": "29",
        "name": "TXM4",
        "type": "output",
        "description": "Port 4 physical transmit signal - (differential)."
      },
      {
        "number": "30",
        "name": "GNDA",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "31",
        "name": "VDDAR",
        "type": "power_in",
        "description": "1.2V analog VDD."
      },
      {
        "number": "32",
        "name": "RXP5",
        "type": "input",
        "description": "Port 5 physical receive signal + (differential)."
      },
      {
        "number": "33",
        "name": "RXM5",
        "type": "input",
        "description": "Port 5 physical receive signal - (differential)."
      },
      {
        "number": "34",
        "name": "GNDA",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "35",
        "name": "TXP5",
        "type": "output",
        "description": "Port 5 physical transmit signal + (differential)."
      },
      {
        "number": "36",
        "name": "TXM5",
        "type": "output",
        "description": "Port 5 physical transmit signal - (differential)."
      },
      {
        "number": "37",
        "name": "VDDAT",
        "type": "power_in",
        "description": "3.3V analog VDD."
      },
      {
        "number": "38",
        "name": "NC/FXSD3",
        "type": "input",
        "description": "Port 3 fiber signal detect when Register 239 bit [7] sets fiber mode; can float when port 3 is copper (default)."
      },
      {
        "number": "39",
        "name": "FXSD4",
        "type": "input",
        "description": "Fiber signal detect pin for Port 4."
      },
      {
        "number": "40",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; leave floating."
      },
      {
        "number": "41",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; leave floating."
      },
      {
        "number": "42",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; leave floating."
      },
      {
        "number": "43",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; leave floating."
      },
      {
        "number": "44",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; leave floating."
      },
      {
        "number": "45",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; leave floating."
      },
      {
        "number": "46",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; leave floating."
      },
      {
        "number": "47",
        "name": "PWRDN_N",
        "type": "input",
        "description": "Active-low full-chip power down (internal pull-up)."
      },
      {
        "number": "48",
        "name": "INTR_N",
        "type": "output",
        "description": "Interrupt output; open-drain pin with internal pull-up."
      },
      {
        "number": "49",
        "name": "GNDD",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "50",
        "name": "VDDC",
        "type": "power_in",
        "description": "1.2V digital core VDD."
      },
      {
        "number": "51",
        "name": "PMTXEN",
        "type": "input",
        "description": "PHY [5] MII transmit enable."
      },
      {
        "number": "52",
        "name": "PMTXD3",
        "type": "input",
        "description": "PHY [5] MII transmit bit 3."
      },
      {
        "number": "53",
        "name": "PMTXD2",
        "type": "input",
        "description": "PHY [5] MII transmit bit 2."
      },
      {
        "number": "54",
        "name": "PMTXD1",
        "type": "input",
        "description": "PHY [5] MII transmit bit 1."
      },
      {
        "number": "55",
        "name": "PMTXD0",
        "type": "input",
        "description": "PHY [5] MII transmit bit 0."
      },
      {
        "number": "56",
        "name": "PMTXER",
        "type": "input",
        "description": "PHY [5] MII transmit error."
      },
      {
        "number": "57",
        "name": "PMTXC/PMREFCLK",
        "type": "output",
        "description": "On the FQX, PHY [5] MII transmit clock output."
      },
      {
        "number": "58",
        "name": "GNDD",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "59",
        "name": "VDDIO",
        "type": "power_in",
        "description": "3.3V, 2.5V, or 1.8V digital VDD for digital I/O circuitry."
      },
      {
        "number": "60",
        "name": "PMRXC",
        "type": "output",
        "description": "PHY [5] MII receive clock output."
      },
      {
        "number": "61",
        "name": "PMRXDV/PMCRSDV",
        "type": "output",
        "description": "PHY [5] MII receive data valid (PMRXDV on the FQX); internal pull-down during reset."
      },
      {
        "number": "62",
        "name": "PMRXD3",
        "type": "bidirectional",
        "description": "PHY [5] MII receive bit 3; strap: PD (default) enables flow control, PU disables it."
      },
      {
        "number": "63",
        "name": "PMRXD2",
        "type": "bidirectional",
        "description": "PHY [5] MII receive bit 2; strap: PD (default) disables back pressure, PU enables it."
      },
      {
        "number": "64",
        "name": "PMRXD1",
        "type": "bidirectional",
        "description": "PHY [5] MII receive bit 1; strap: PD (default) drops excessive collision packets, PU does not."
      },
      {
        "number": "65",
        "name": "PMRXD0",
        "type": "bidirectional",
        "description": "PHY [5] MII receive bit 0; strap: PD (default) disables aggressive back-off in half-duplex, PU enables it."
      },
      {
        "number": "66",
        "name": "PMRXER",
        "type": "bidirectional",
        "description": "PHY [5] MII receive error; strap: PD (default) packet size 1518/1522 bytes, PU 1536 bytes."
      },
      {
        "number": "67",
        "name": "PCRS",
        "type": "bidirectional",
        "description": "PHY [5] MII carrier sense; port 4 strap: PD (default) force half-duplex, PU force full-duplex if auto-negotiation is disabled or fails (Register 76)."
      },
      {
        "number": "68",
        "name": "PCOL",
        "type": "bidirectional",
        "description": "PHY [5] MII collision detect; port 4 strap: PD (default) no forced flow control, PU force flow control (Register 66)."
      },
      {
        "number": "69",
        "name": "SMTXEN",
        "type": "input",
        "description": "Port 5 Switch MII transmit enable."
      },
      {
        "number": "70",
        "name": "SMTXD3",
        "type": "input",
        "description": "Port 5 Switch MII transmit bit 3."
      },
      {
        "number": "71",
        "name": "SMTXD2",
        "type": "input",
        "description": "Port 5 Switch MII transmit bit 2."
      },
      {
        "number": "72",
        "name": "SMTXD1",
        "type": "input",
        "description": "Port 5 Switch MII transmit bit 1."
      },
      {
        "number": "73",
        "name": "SMTXD0",
        "type": "input",
        "description": "Port 5 Switch MII transmit bit 0."
      },
      {
        "number": "74",
        "name": "SMTXER",
        "type": "input",
        "description": "Port 5 Switch MII transmit error."
      },
      {
        "number": "75",
        "name": "SMTXC/SMREFCLK",
        "type": "bidirectional",
        "description": "Port 5 Switch MII transmit clock; input in SW5-MII MAC mode, output in PHY modes."
      },
      {
        "number": "76",
        "name": "GNDD",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "77",
        "name": "VDDIO",
        "type": "power_in",
        "description": "3.3V, 2.5V, or 1.8V digital VDD for digital I/O circuitry."
      },
      {
        "number": "78",
        "name": "SMRXC",
        "type": "bidirectional",
        "description": "Port 5 Switch MII receive clock; input in SW5-MII MAC mode, output in PHY mode."
      },
      {
        "number": "79",
        "name": "SMRXDV/SMCRSDV",
        "type": "output",
        "description": "Switch MAC5 MII receive data valid (SMRXDV on the FQX); internal pull-down during reset."
      },
      {
        "number": "80",
        "name": "SMRXD3",
        "type": "bidirectional",
        "description": "Port 5 Switch MII receive bit 3; strap: PD (default) disables SW5-MII full-duplex flow control, PU enables it."
      },
      {
        "number": "81",
        "name": "SMRXD2",
        "type": "bidirectional",
        "description": "Port 5 Switch MII receive bit 2; strap: PD (default) full-duplex mode, PU half-duplex mode."
      },
      {
        "number": "82",
        "name": "SMRXD1",
        "type": "bidirectional",
        "description": "Port 5 Switch MII receive bit 1; strap: PD (default) 100 Mbps mode, PU 10 Mbps mode."
      },
      {
        "number": "83",
        "name": "SMRXD0",
        "type": "bidirectional",
        "description": "Port 5 Switch MII receive bit 0; strap selects LED mode, PD (default) mode 0, PU mode 1 (Register 11)."
      },
      {
        "number": "84",
        "name": "SCOL",
        "type": "bidirectional",
        "description": "Port switch MII collision detect; input in SW5-MII MAC modes, output in PHY modes."
      },
      {
        "number": "85",
        "name": "SCRS",
        "type": "bidirectional",
        "description": "Port switch MII carrier sense; input in SW5-MII MAC modes, output in PHY modes."
      },
      {
        "number": "86",
        "name": "SCONF1",
        "type": "input",
        "description": "Dual MII configuration pin; with pins 91 and 87 selects Port 5 switch MAC5 and PHY5 MII modes (internal pull-down)."
      },
      {
        "number": "87",
        "name": "SCONF0",
        "type": "input",
        "description": "Dual MII configuration pin; see pin 86 configuration table (internal pull-down)."
      },
      {
        "number": "88",
        "name": "GNDD",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "89",
        "name": "VDDC",
        "type": "power_in",
        "description": "1.2V digital core VDD."
      },
      {
        "number": "90",
        "name": "LED5-2",
        "type": "bidirectional",
        "description": "Port 5 LED indicator 2; strap: PU (default) aging enable, PD aging disable."
      },
      {
        "number": "91",
        "name": "LED5-1",
        "type": "bidirectional",
        "description": "Port 5 LED indicator 1; strap: PU (default) enables PHY [5] MII interface, PD tri-states all PHY [5] MII outputs."
      },
      {
        "number": "92",
        "name": "LED5-0",
        "type": "bidirectional",
        "description": "Port 5 LED indicator 0; port 4 strap: PU (default) enables auto-negotiation, PD disables it (Register 76 bit [7])."
      },
      {
        "number": "93",
        "name": "LED4-2",
        "type": "output",
        "description": "Port 4 LED indicator 2."
      },
      {
        "number": "94",
        "name": "LED4-1",
        "type": "output",
        "description": "Port 4 LED indicator 1."
      },
      {
        "number": "95",
        "name": "LED4-0",
        "type": "bidirectional",
        "description": "Port 4 LED indicator 0; strap: PU (default) normal mode, PD Energy Detection (EDPD) mode (Register 14 bits [4:3])."
      },
      {
        "number": "96",
        "name": "LED3-2",
        "type": "output",
        "description": "Port 3 LED indicator 2."
      },
      {
        "number": "97",
        "name": "LED3-1",
        "type": "output",
        "description": "Port 3 LED indicator 1."
      },
      {
        "number": "98",
        "name": "LED3-0",
        "type": "bidirectional",
        "description": "Port 3 LED indicator 0; strap: PU (default) 8 mA I/O drive strength, PD 12 mA (Register 132 bits [7:6])."
      },
      {
        "number": "99",
        "name": "GNDD",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "100",
        "name": "VDDIO",
        "type": "power_in",
        "description": "3.3V, 2.5V, or 1.8V digital VDD for digital I/O circuitry."
      },
      {
        "number": "101",
        "name": "LED2-2",
        "type": "bidirectional",
        "description": "Port 2 LED indicator 2; strap option applies to the RQX only."
      },
      {
        "number": "102",
        "name": "LED2-1",
        "type": "bidirectional",
        "description": "Port 2 LED indicator 1; port 3 strap: PU (default) enables auto-negotiation, PD disables it (Register 60 bit [7])."
      },
      {
        "number": "103",
        "name": "LED2-0",
        "type": "output",
        "description": "Port 2 LED indicator 0."
      },
      {
        "number": "104",
        "name": "LED1-2",
        "type": "output",
        "description": "Port 1 LED indicator 2."
      },
      {
        "number": "105",
        "name": "LED1-1",
        "type": "bidirectional",
        "description": "Port 1 LED indicator 1; port 3 strap: PU (default) no forced flow control, PD force flow control (Register 60 bit [4])."
      },
      {
        "number": "106",
        "name": "LED1-0",
        "type": "bidirectional",
        "description": "Port 1 LED indicator 0; port 3 strap: PU (default) force half-duplex, PD force full-duplex if auto-negotiation is disabled or fails (Register 60 bit [5])."
      },
      {
        "number": "107",
        "name": "MDC",
        "type": "input",
        "description": "All-PHYs MII management (MIIM) data clock, or SMI interface clock."
      },
      {
        "number": "108",
        "name": "MDIO",
        "type": "bidirectional",
        "description": "All-PHYs MII management (MIIM) data I/O, or SMI interface data I/O; needs an external pull-up when driven."
      },
      {
        "number": "109",
        "name": "SPIQ",
        "type": "output",
        "description": "SPI serial data output in SPI slave mode; needs an external pull-up when driven."
      },
      {
        "number": "110",
        "name": "SPIC/SCL",
        "type": "bidirectional",
        "description": "Input clock up to 25 MHz in SPI slave mode, or 61 kHz output clock in I2C master mode; needs an external pull-up when driven."
      },
      {
        "number": "111",
        "name": "SPID/SDA",
        "type": "bidirectional",
        "description": "Serial data input in SPI slave mode, or serial data input/output in I2C master mode; needs an external pull-up when driven."
      },
      {
        "number": "112",
        "name": "SPIS_N",
        "type": "input",
        "description": "Active-low SPI slave select; high deselects the device and holds SPIQ high impedance, a high-to-low transition starts an SPI transfer; unused in I2C master mode."
      },
      {
        "number": "113",
        "name": "PS1",
        "type": "input",
        "description": "Serial bus configuration pin PS[1]; PS[1:0] = 00 I2C master (EEPROM), 01 SMI, 10 SPI slave, 11 factory test (BIST)."
      },
      {
        "number": "114",
        "name": "PS0",
        "type": "input",
        "description": "Serial bus configuration pin PS[0]; see pin 113."
      },
      {
        "number": "115",
        "name": "RST_N",
        "type": "input",
        "description": "Active-low device reset."
      },
      {
        "number": "116",
        "name": "GNDD",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "117",
        "name": "VDDC",
        "type": "power_in",
        "description": "1.2V digital core VDD."
      },
      {
        "number": "118",
        "name": "TESTEN",
        "type": "input",
        "description": "Factory test pin; NC for normal operation."
      },
      {
        "number": "119",
        "name": "SCANEN",
        "type": "input",
        "description": "Factory test pin; NC for normal operation."
      },
      {
        "number": "120",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; leave floating."
      },
      {
        "number": "121",
        "name": "X1",
        "type": "input",
        "description": "25 MHz crystal connection or 3.3V oscillator input, ±50 ppm tolerance."
      },
      {
        "number": "122",
        "name": "X2",
        "type": "output",
        "description": "25 MHz crystal clock connection."
      },
      {
        "number": "123",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; leave floating."
      },
      {
        "number": "124",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; leave floating."
      },
      {
        "number": "125",
        "name": "LDO_O",
        "type": "output",
        "description": "Connects to the MOSFET gate when using the internal 1.2V LDO controller; floating when using an external 1.2V LDO."
      },
      {
        "number": "126",
        "name": "IN_PWR_SEL",
        "type": "input",
        "description": "Resistor-divider input that enables the internal 1.2V LDO controller above 1V; pull down to disable it when using an external 1.2V LDO."
      },
      {
        "number": "127",
        "name": "GNDA",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "128",
        "name": "TEST2",
        "type": "unconnected",
        "description": "Factory test pin; NC for normal operation."
      }
    ],
    "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: LDO_O is listed as type P in the datasheet; classified as output because it drives a MOSFET gate. Ve; ISET is listed with no type; classified passive since it connects to an external resistor.; Strapped IPD/O and IPU/O pins are inputs during reset and outputs otherwise; classified as bidirecti"
        ],
        "pages_sent": 25,
        "cost_usd": 0.3809,
        "at": "2026-10-31T12:37:52"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/a7dd59c20530c117b43dc99b3012f19a.pdf",
        "pages": 108,
        "sha256": "cdc8a1ad0e708814",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 128,
        "described": 128,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ksz8895fqxi.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          16.0,
          22.0,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "ca422858bcd644be7af77fab7ba5fa0a5f1b192af648c8cbabbf2c57b8d3c45f",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ksz8895fqxi-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          16.0,
          22.0,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d828791eec8596eef02ab687b0e7bdf8c11c3ea2a4e3e8d335c49fbbbb256d18",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}