component
KSZ8081MNXCA-TR
Public Made by Adomby adom
Microchip Tech Ethernet ICs, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "ksz8081mnxca-tr",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech Ethernet ICs, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"interface ics",
"ksz8081mnxca-tr",
"factory-2.0.0",
"extractor-text"
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"component": {
"mpn": "KSZ8081MNXCA-TR",
"manufacturer": "Microchip Tech",
"package": "QFN-32-EP(5x5)",
"pin_count": 33,
"category": "Interface ICs",
"subcategory": "Ethernet ICs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/5a41bfca447a4e13b0fff961d85fcf4f.pdf",
"parts": {
"symbol": "ksz8081mnxca-tr.kicad_sym",
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"lbr": "ksz8081mnxca-tr.lbr"
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"distributor_links": {
"lcsc": "C145705",
"digikey": "576-4171-2-ND",
"mouser": "998-KSZ8081MNXCATR"
},
"distributor_check": {
"checked_at": "2026-10-27T06:36:17Z",
"source": "Component Ocean /api/assign-pns",
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"pn": "576-4171-2-ND",
"status": "found"
},
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"pn": "998-KSZ8081MNXCATR",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "GND",
"type": "power_in",
"description": "Ground connection for the device."
},
{
"number": "2",
"name": "VDD_1.2",
"type": "power_out",
"description": "1.2V core VDD supplied by the on-chip regulator; 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 for the transceiver."
},
{
"number": "4",
"name": "RXM",
"type": "bidirectional",
"description": "Physical receive or transmit signal, differential negative leg."
},
{
"number": "5",
"name": "RXP",
"type": "bidirectional",
"description": "Physical receive or transmit signal, differential positive leg."
},
{
"number": "6",
"name": "TXM",
"type": "bidirectional",
"description": "Physical transmit or receive signal, differential negative leg."
},
{
"number": "7",
"name": "TXP",
"type": "bidirectional",
"description": "Physical transmit or receive signal, differential positive leg."
},
{
"number": "8",
"name": "XO",
"type": "output",
"description": "Crystal feedback for the 25 MHz crystal; no connect when an oscillator or external clock source is used."
},
{
"number": "9",
"name": "XI",
"type": "input",
"description": "Crystal, oscillator or external clock input at 25 MHz ±50 ppm."
},
{
"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": "MII management data I/O with weak pull-up, open-drain, requiring an external 1.0 kΩ pull-up resistor."
},
{
"number": "12",
"name": "MDC",
"type": "input",
"description": "MII management clock input, synchronous to the MDIO data pin."
},
{
"number": "13",
"name": "RXD3/PHYAD0",
"type": "bidirectional",
"description": "MII receive data output bit 3; in config mode the pull-up/pull-down is latched as PHYADDR[0] at reset de-assertion."
},
{
"number": "14",
"name": "RXD2/PHYAD1",
"type": "bidirectional",
"description": "MII receive data output bit 2; in config mode the pull-up/pull-down is latched as PHYADDR[1] at reset de-assertion."
},
{
"number": "15",
"name": "RXD1/PHYAD2",
"type": "bidirectional",
"description": "MII receive data output bit 1; in config mode the pull-up/pull-down is latched as PHYADDR[2] at reset de-assertion."
},
{
"number": "16",
"name": "RXD0/DUPLEX",
"type": "bidirectional",
"description": "MII receive data output bit 0; in config mode the pull-up/pull-down is latched as DUPLEX at reset de-assertion."
},
{
"number": "17",
"name": "VDDIO",
"type": "power_in",
"description": "3.3V, 2.5V, or 1.8V digital VDD."
},
{
"number": "18",
"name": "RXDV/CONFIG2",
"type": "bidirectional",
"description": "MII receive data valid output; in config mode the pull-up/pull-down is latched as CONFIG2 at reset de-assertion."
},
{
"number": "19",
"name": "RXC/B-CAST_OFF",
"type": "bidirectional",
"description": "MII receive clock output; in config mode the pull-up/pull-down is latched as B-CAST_OFF at reset de-assertion."
},
{
"number": "20",
"name": "RXER/ISO",
"type": "bidirectional",
"description": "MII receive error output; in config mode the pull-up/pull-down is latched as ISOLATE at reset de-assertion."
},
{
"number": "21",
"name": "INTRP/NAND_Tree#",
"type": "bidirectional",
"description": "Programmable interrupt output with weak pull-up, open-drain, requiring an external 1.0 kΩ pull-up resistor; latched as NAND Tree# at reset de-assertion in config mode."
},
{
"number": "22",
"name": "TXC",
"type": "bidirectional",
"description": "MII transmit clock output at 2.5 MHz for 10 Mbps or 25 MHz for 100 Mbps; needs a pull-down latched at reset for normal operation."
},
{
"number": "23",
"name": "TXEN",
"type": "input",
"description": "MII transmit enable input."
},
{
"number": "24",
"name": "TXD0",
"type": "input",
"description": "MII transmit data input bit 0, synchronous with TXC and valid while TXEN is asserted."
},
{
"number": "25",
"name": "TXD1",
"type": "input",
"description": "MII transmit data input bit 1, synchronous with TXC and valid while TXEN is asserted."
},
{
"number": "26",
"name": "TXD2",
"type": "input",
"description": "MII transmit data input bit 2, synchronous with TXC and valid while TXEN is asserted."
},
{
"number": "27",
"name": "TXD3",
"type": "input",
"description": "MII transmit data input bit 3, synchronous with TXC and valid while TXEN is asserted."
},
{
"number": "28",
"name": "COL/CONFIG0",
"type": "bidirectional",
"description": "MII collision detect output; in config mode the pull-up/pull-down is latched as CONFIG0 at reset de-assertion."
},
{
"number": "29",
"name": "CRS/CONFIG1",
"type": "bidirectional",
"description": "MII carrier sense output; in config mode the pull-up/pull-down is latched as CONFIG1 at reset de-assertion."
},
{
"number": "30",
"name": "LED0/NWAYEN",
"type": "bidirectional",
"description": "Programmable LED0 output; in config mode it is latched as auto-negotiation enable (Register 0h, Bit [12]) at reset de-assertion."
},
{
"number": "31",
"name": "LED1/SPEED",
"type": "bidirectional",
"description": "Programmable LED1 output; in config mode it is latched as speed select (Register 0h, Bit [13]) at reset de-assertion."
},
{
"number": "32",
"name": "RST#",
"type": "input",
"description": "Active-low chip reset input with internal pull-up."
},
{
"number": "33",
"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 described in the supplied text. The pinout is taken from t",
"1/33 pins cited to the wrong page (name found elsewhere): ['8:XO@p6']"
],
"pages_sent": 36,
"cost_usd": 0.0534,
"at": "2026-10-27T06:35:55"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/5a41bfca447a4e13b0fff961d85fcf4f.pdf",
"pages": 66,
"sha256": "773e44836a09f168",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
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"sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
"checked": "2026-10-27",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
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}