DP83848IVVX

{
  "schema_version": 1,
  "type": "component",
  "slug": "dp83848ivvx",
  "title": "DP83848IVVX",
  "brief": "Texas Instruments Ethernet Controllers, LQFP-48(7x7). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "dp83848ivvx"
  ],
  "component": {
    "mpn": "DP83848IVVX",
    "manufacturer": "Texas Instruments",
    "package": "LQFP-48(7x7)",
    "pin_count": 49,
    "category": "Interface",
    "subcategory": "Ethernet Controllers",
    "datasheet": "https://www.ti.com/lit/ds/symlink/dp83848ivvx.pdf",
    "parts": {
      "symbol": "dp83848ivvx.kicad_sym",
      "footprint": "dp83848ivvx.kicad_mod",
      "model_3d": "dp83848ivvx-etched.glb",
      "model_3d_plain": "dp83848ivvx.glb",
      "model_3d_step": "dp83848ivvx-etched.step",
      "model_3d_step_plain": "dp83848ivvx.step",
      "lbr": "dp83848ivvx.lbr"
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "TX_CLK",
        "type": "output",
        "description": "MII transmit clock output: 25 MHz in 100 Mb/s mode, 2.5 MHz in 10 Mb/s mode. In SNI mode provides 10 MHz. Unused in RMII (device uses X1 as 50 MHz reference)."
      },
      {
        "number": "2",
        "name": "TX_EN",
        "type": "input",
        "description": "MII/RMII/SNI transmit enable, active high; indicates valid data on TXD lines. Internal pulldown."
      },
      {
        "number": "3",
        "name": "TXD_0",
        "type": "input",
        "description": "MII/RMII/SNI transmit data bit 0, synchronous to TX_CLK (MII/SNI) or 50 MHz reference (RMII)."
      },
      {
        "number": "4",
        "name": "TXD_1",
        "type": "input",
        "description": "MII/RMII transmit data bit 1, synchronous to TX_CLK (MII) or 50 MHz reference (RMII)."
      },
      {
        "number": "5",
        "name": "TXD_2",
        "type": "input",
        "description": "MII transmit data bit 2, synchronous to TX_CLK."
      },
      {
        "number": "6",
        "name": "TXD_3/SNI_MODE",
        "type": "input",
        "description": "MII transmit data bit 3 after reset; sampled at reset as SNI_MODE strap (with MII_MODE strap it selects MII/RMII/SNI MAC interface mode). Internal pulldown."
      },
      {
        "number": "7",
        "name": "PWR_DOWN/INT",
        "type": "bidirectional",
        "description": "Default POWER DOWN: active-low input to enter power-down. INTERRUPT: reconfigurable as open-drain, active-low interrupt output (requires register setup). Internal pullup."
      },
      {
        "number": "8",
        "name": "TCK",
        "type": "input",
        "description": "JTAG test clock. Internal pullup. DP83848C does not support JTAG; leave unconnected on that variant."
      },
      {
        "number": "9",
        "name": "TDO",
        "type": "output",
        "description": "JTAG test data output."
      },
      {
        "number": "10",
        "name": "TMS",
        "type": "input",
        "description": "JTAG test mode select. Internal pullup."
      },
      {
        "number": "11",
        "name": "TRST#",
        "type": "input",
        "description": "JTAG test reset, active-low asynchronous. Internal pullup."
      },
      {
        "number": "12",
        "name": "TDI",
        "type": "input",
        "description": "JTAG test data input. Internal pullup."
      },
      {
        "number": "13",
        "name": "RD-",
        "type": "bidirectional",
        "description": "PMD differential receive input (negative). Auto-MDIX capable - may be reconfigured as transmit output. Requires 3.3 V bias."
      },
      {
        "number": "14",
        "name": "RD+",
        "type": "bidirectional",
        "description": "PMD differential receive input (positive). Auto-MDIX capable - may be reconfigured as transmit output. Requires 3.3 V bias."
      },
      {
        "number": "15",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "16",
        "name": "TD-",
        "type": "bidirectional",
        "description": "PMD differential transmit output (negative), auto-configured for 10BASE-T or 100BASE-TX. Auto-MDIX capable - may be reconfigured as receive input. Requires 3.3 V bias."
      },
      {
        "number": "17",
        "name": "TD+",
        "type": "bidirectional",
        "description": "PMD differential transmit output (positive), auto-configured for 10BASE-T or 100BASE-TX. Auto-MDIX capable - may be reconfigured as receive input. Requires 3.3 V bias."
      },
      {
        "number": "18",
        "name": "PFBIN1",
        "type": "power_in",
        "description": "Power feedback input 1: fed from PFBOUT via external routing; bypass with 0.1 µF close to pin. Do not connect to any other supply."
      },
      {
        "number": "19",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "20",
        "name": "RESERVED",
        "type": "passive",
        "description": "Reserved pin; must be pulled up to AVDD33 through a 2.2 kΩ resistor."
      },
      {
        "number": "21",
        "name": "RESERVED",
        "type": "passive",
        "description": "Reserved pin; must be pulled up to AVDD33 through a 2.2 kΩ resistor."
      },
      {
        "number": "22",
        "name": "AVDD33",
        "type": "power_in",
        "description": "Analog 3.3 V supply (3.3 V ± 0.3 V)."
      },
      {
        "number": "23",
        "name": "PFBOUT",
        "type": "power_out",
        "description": "Power feedback output; place 10 µF (tantalum preferred) in parallel with 0.1 µF close to this pin, then route to PFBIN1 (pin 18) and PFBIN2 (pin 37)."
      },
      {
        "number": "24",
        "name": "RBIAS",
        "type": "passive",
        "description": "Bias resistor connection: connect a 4.87 kΩ 1% resistor from RBIAS to GND."
      },
      {
        "number": "25",
        "name": "CLK_OUT",
        "type": "output",
        "description": "Reference clock output: 25 MHz in MII mode, 50 MHz in RMII mode, so other devices can share the PHY reference clock."
      },
      {
        "number": "26",
        "name": "LED_ACT/COL/AN_EN",
        "type": "bidirectional",
        "description": "After reset: Activity or Collision/Duplex LED (mode-dependent). Sampled at reset as AN_EN strap - high enables Auto-Negotiation, low forces mode selected by AN0/AN1. Internal pullup."
      },
      {
        "number": "27",
        "name": "LED_SPEED/AN1",
        "type": "bidirectional",
        "description": "After reset: SPEED LED (ON at 100 Mb/s, OFF at 10 Mb/s). Sampled at reset with AN0 as advertised/forced-mode strap. Internal pullup."
      },
      {
        "number": "28",
        "name": "LED_LINK/AN0",
        "type": "bidirectional",
        "description": "After reset: LINK LED (ON when link good) or LINK/ACT LED depending on mode. Sampled at reset with AN1 as advertised/forced-mode strap. Internal pullup."
      },
      {
        "number": "29",
        "name": "RESET_N",
        "type": "input",
        "description": "Active-low reset: assert low for at least 1 µs to reinitialize the device. All registers return to defaults and strap options are re-latched. Internal pullup."
      },
      {
        "number": "30",
        "name": "MDIO",
        "type": "bidirectional",
        "description": "MII management data I/O, bidirectional. Requires an external 1.5 kΩ pullup resistor."
      },
      {
        "number": "31",
        "name": "MDC",
        "type": "input",
        "description": "MII management data clock, up to 25 MHz, no minimum rate. Asynchronous to TX/RX clocks."
      },
      {
        "number": "32",
        "name": "IOVDD33",
        "type": "power_in",
        "description": "I/O 3.3 V supply."
      },
      {
        "number": "33",
        "name": "X2",
        "type": "output",
        "description": "Crystal output for the reference oscillator; connect to external 25 MHz crystal across X1/X2. Leave unconnected when using an external CMOS oscillator on X1."
      },
      {
        "number": "34",
        "name": "X1",
        "type": "input",
        "description": "Primary clock reference input: 25 MHz ±50 ppm crystal or CMOS oscillator (MII/SNI); 50 MHz ±50 ppm CMOS oscillator in RMII mode."
      },
      {
        "number": "35",
        "name": "IOGND",
        "type": "power_in",
        "description": "I/O ground."
      },
      {
        "number": "36",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "37",
        "name": "PFBIN2",
        "type": "power_in",
        "description": "Power feedback input 2: fed from PFBOUT; bypass with 0.1 µF close to pin. Do not connect to any other supply."
      },
      {
        "number": "38",
        "name": "RX_CLK",
        "type": "output",
        "description": "MII receive clock: 25 MHz recovered receive clock in 100 Mb/s mode, 2.5 MHz in 10 Mb/s mode. Provides 10 MHz in SNI mode. Unused in RMII."
      },
      {
        "number": "39",
        "name": "RX_DV/MII_MODE",
        "type": "bidirectional",
        "description": "MII receive data valid (default) or RMII synchronous receive data valid. Sampled at reset as MII_MODE strap: 0=MII, 1=RMII/SNI (with SNI_MODE). Internal pulldown."
      },
      {
        "number": "40",
        "name": "CRS/CRS_DV/LED_CFG",
        "type": "bidirectional",
        "description": "MII carrier sense / RMII CRS_DV / SNI carrier sense. Sampled at reset as LED_CFG strap selecting LED Mode 1 (default) or Mode 2. Internal pullup."
      },
      {
        "number": "41",
        "name": "RX_ER/MDIX_EN",
        "type": "bidirectional",
        "description": "MII/RMII receive error output (unused in SNI). Sampled at reset as MDIX_EN strap; pulldown disables Auto-MDIX. Internal pullup."
      },
      {
        "number": "42",
        "name": "COL/PHYAD0",
        "type": "bidirectional",
        "description": "MII collision detect output (SNI collision in SNI mode; unused in RMII). Sampled at reset as PHY address bit 0. Internal pullup."
      },
      {
        "number": "43",
        "name": "RXD_0/PHYAD1",
        "type": "bidirectional",
        "description": "MII/RMII receive data bit 0 (SNI RXD_0). Sampled at reset as PHY address bit 1. Internal pulldown."
      },
      {
        "number": "44",
        "name": "RXD_1/PHYAD2",
        "type": "bidirectional",
        "description": "MII/RMII receive data bit 1. Sampled at reset as PHY address bit 2. Internal pulldown."
      },
      {
        "number": "45",
        "name": "RXD_2/PHYAD3",
        "type": "bidirectional",
        "description": "MII receive data bit 2 (unused in RMII/SNI). Sampled at reset as PHY address bit 3. Internal pulldown."
      },
      {
        "number": "46",
        "name": "RXD_3/PHYAD4",
        "type": "bidirectional",
        "description": "MII receive data bit 3 (unused in RMII/SNI). Sampled at reset as PHY address bit 4. Internal pulldown."
      },
      {
        "number": "47",
        "name": "IOGND",
        "type": "power_in",
        "description": "I/O ground."
      },
      {
        "number": "48",
        "name": "IOVDD33",
        "type": "power_in",
        "description": "I/O 3.3 V supply."
      },
      {
        "number": "49",
        "name": "GNDPAD",
        "type": "power_in",
        "description": "Exposed thermal ground pad on the package underside; must be soldered to the PCB ground plane for thermal and electrical grounding."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/dp83848ivvx.pdf",
        "pages": 86,
        "sha256": "6add7615dee04f2d",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 49,
        "described": 49,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "checked": "2026-10-07",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "LQFP-48(7x7)",
      "Category": "Interface",
      "Pins": "49"
    }
  },
  "sections": [
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    "info"
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  "discovery_triggers": [
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  "discovery_pitch": "DP83848IVVX (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
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  "variants": [
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      "mpn": "DP83848IVVX",
      "kind": "packaging"
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    {
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  "updated_at": "2026-09-24T19:53:33.721Z"
}