DM9000AEP

{
  "schema_version": 1,
  "type": "component",
  "slug": "dm9000aep",
  "title": "DM9000AEP",
  "brief": "DAVICOM 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",
    "dm9000aep"
  ],
  "component": {
    "mpn": "DM9000AEP",
    "manufacturer": "DAVICOM",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Interface",
    "subcategory": "Ethernet Controllers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586171940096913408",
    "parts": {
      "symbol": "dm9000aep.kicad_sym",
      "footprint": "dm9000aep.kicad_mod",
      "model_3d": "dm9000aep-etched.glb",
      "model_3d_plain": "dm9000aep.glb",
      "model_3d_step": "dm9000aep-etched.step",
      "model_3d_step_plain": "dm9000aep.step",
      "lbr": "dm9000aep.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "BGRES",
        "type": "bidirectional",
        "description": "Bandgap reference pin. Connect an external bias resistor (typically to BGGND) per the application circuit to set the internal bandgap current reference."
      },
      {
        "number": "2",
        "name": "RXVDD25",
        "type": "power_out",
        "description": "2.5V regulated power output for the TP receive analog block. Bypass to RXGND with a decoupling capacitor; not a supply input."
      },
      {
        "number": "3",
        "name": "RX+",
        "type": "bidirectional",
        "description": "Twisted-pair receive positive (10/100BASE-TX). Connect through the magnetics to the RJ45 receive pair; may swap with RX- in Auto-MDIX mode."
      },
      {
        "number": "4",
        "name": "RX-",
        "type": "bidirectional",
        "description": "Twisted-pair receive negative (10/100BASE-TX). Connect through the magnetics to the RJ45 receive pair; may swap with RX+ in Auto-MDIX mode."
      },
      {
        "number": "5",
        "name": "RXGND",
        "type": "power_in",
        "description": "Receive analog ground return for the twisted-pair receive block."
      },
      {
        "number": "6",
        "name": "TXGND",
        "type": "power_in",
        "description": "Transmit analog ground return for the twisted-pair transmit block."
      },
      {
        "number": "7",
        "name": "TX+",
        "type": "bidirectional",
        "description": "Twisted-pair transmit positive (10/100BASE-TX). Drives the RJ45 transmit pair through the magnetics; may swap with TX- in Auto-MDIX mode."
      },
      {
        "number": "8",
        "name": "TX-",
        "type": "bidirectional",
        "description": "Twisted-pair transmit negative (10/100BASE-TX). Drives the RJ45 transmit pair through the magnetics; may swap with TX+ in Auto-MDIX mode."
      },
      {
        "number": "9",
        "name": "TXVDD25",
        "type": "power_out",
        "description": "2.5V regulated power output for the TP transmit analog block. Bypass to TXGND with a decoupling capacitor; not a supply input."
      },
      {
        "number": "10",
        "name": "SD7",
        "type": "bidirectional",
        "description": "Processor data bus bit 7 (host interface). 8mA I/O with internal pull-down; drive strength selectable via BUSCR (reg 38H)."
      },
      {
        "number": "11",
        "name": "SD6",
        "type": "bidirectional",
        "description": "Processor data bus bit 6 (host interface). 8mA I/O with internal pull-down."
      },
      {
        "number": "12",
        "name": "SD5",
        "type": "bidirectional",
        "description": "Processor data bus bit 5 (host interface). 8mA I/O with internal pull-down."
      },
      {
        "number": "13",
        "name": "SD4",
        "type": "bidirectional",
        "description": "Processor data bus bit 4 (host interface). 8mA I/O with internal pull-down."
      },
      {
        "number": "14",
        "name": "SD3",
        "type": "bidirectional",
        "description": "Processor data bus bit 3 (host interface). 8mA I/O with internal pull-down."
      },
      {
        "number": "15",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground return."
      },
      {
        "number": "16",
        "name": "SD2",
        "type": "bidirectional",
        "description": "Processor data bus bit 2 (host interface). 8mA I/O with internal pull-down."
      },
      {
        "number": "17",
        "name": "SD1",
        "type": "bidirectional",
        "description": "Processor data bus bit 1 (host interface). 8mA I/O with internal pull-down."
      },
      {
        "number": "18",
        "name": "SD0",
        "type": "bidirectional",
        "description": "Processor data bus bit 0 (host interface). 8mA I/O with internal pull-down."
      },
      {
        "number": "19",
        "name": "EEDIO",
        "type": "bidirectional",
        "description": "Serial EEPROM data I/O (Microwire 93C46-style). 8mA I/O with internal pull-down; used to auto-load MAC, vendor/product ID, and pin polarity config."
      },
      {
        "number": "20",
        "name": "EECK",
        "type": "output",
        "description": "Serial EEPROM clock output. Also a strap pin at power-up: pulled high selects INT active-low, floating (default) selects INT active-high."
      },
      {
        "number": "21",
        "name": "EECS",
        "type": "output",
        "description": "Serial EEPROM chip select output. Also a strap pin at power-up: pulled high selects 8-bit host data bus, floating (default) selects 16-bit."
      },
      {
        "number": "22",
        "name": "SD15/WAKE",
        "type": "bidirectional",
        "description": "Dual-function pin. In 16-bit host mode this is processor data bus bit 15 (I/O, 8mA). In 8-bit host mode (EECS strapped high) it is WAKE, an output that asserts on a wake-up event; it is also strap-sampled at power-up to select CS# polarity (pulled high = CS# active high, floating = CS# active low)."
      },
      {
        "number": "23",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital 3.3V supply input. Bypass locally with a decoupling capacitor."
      },
      {
        "number": "24",
        "name": "SD14/LED3",
        "type": "bidirectional",
        "description": "Dual-function pin. In 16-bit host mode this is processor data bus bit 14 (I/O, 8mA). In 8-bit host mode it is LED3, a 16mA open-drain-style output that drives the full-duplex or 10M indicator LED per the EEPROM-selected LED mode."
      },
      {
        "number": "25",
        "name": "SD13/GP6",
        "type": "bidirectional",
        "description": "Dual-function pin. In 16-bit host mode this is processor data bus bit 13 (I/O, 8mA). In 8-bit host mode it is GP6, a general-purpose output (8mA) controlled by register 1Fh; also strap-sampled at power-up to select INT output type (pulled high = open-drain, floating = force/push-pull)."
      },
      {
        "number": "26",
        "name": "SD12/GP5",
        "type": "bidirectional",
        "description": "Dual-function pin. In 16-bit host mode this is processor data bus bit 12 (I/O, 8mA). In 8-bit host mode it is GP5, a general-purpose output (8mA) driven from register 1Fh."
      },
      {
        "number": "27",
        "name": "SD11/GP4",
        "type": "bidirectional",
        "description": "Dual-function pin. In 16-bit host mode this is processor data bus bit 11 (I/O, 8mA). In 8-bit host mode it is GP4, a general-purpose output (8mA) driven from register 1Fh."
      },
      {
        "number": "28",
        "name": "SD10/GP3",
        "type": "bidirectional",
        "description": "Dual-function pin. In 16-bit host mode this is processor data bus bit 10 (I/O, 8mA). In 8-bit host mode it is GP3, a general-purpose I/O (8mA, default input) programmed via the GPCR (1Eh) and GPR (1Fh) registers."
      },
      {
        "number": "29",
        "name": "SD9/GP2",
        "type": "bidirectional",
        "description": "Dual-function pin. In 16-bit host mode this is processor data bus bit 9 (I/O, 8mA). In 8-bit host mode it is GP2, a general-purpose I/O (8mA, default input) programmed via GPCR and GPR."
      },
      {
        "number": "30",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital 3.3V supply input. Bypass locally with a decoupling capacitor."
      },
      {
        "number": "31",
        "name": "SD8/GP1",
        "type": "bidirectional",
        "description": "Dual-function pin. In 16-bit host mode this is processor data bus bit 8 (I/O, 8mA). In 8-bit host mode it is GP1, a general-purpose I/O (8mA, default input) programmed via GPCR and GPR."
      },
      {
        "number": "32",
        "name": "CMD",
        "type": "input",
        "description": "Command-type / address-strobe input for the host bus. High = the current cycle accesses the DATA port; low = the current cycle accesses the INDEX (address) port. Internal pull-down."
      },
      {
        "number": "33",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground return."
      },
      {
        "number": "34",
        "name": "INT",
        "type": "output",
        "description": "Interrupt request to host. 8mA output, active-high by default; polarity is programmable via EEPROM or the EECK strap pin, and output type (push-pull vs open-drain) is set in 8-bit mode by the GP6 strap."
      },
      {
        "number": "35",
        "name": "IOR#",
        "type": "input",
        "description": "Processor read strobe. Active-low by default; polarity is programmable via EEPROM. Internal pull-down."
      },
      {
        "number": "36",
        "name": "IOW#",
        "type": "input",
        "description": "Processor write strobe. Active-low by default; polarity is programmable via EEPROM. Internal pull-down."
      },
      {
        "number": "37",
        "name": "CS#",
        "type": "input",
        "description": "Chip select. Active-low by default; polarity is programmable via EEPROM (and by the WAKE strap pin in 8-bit mode). Internal pull-down."
      },
      {
        "number": "38",
        "name": "LED2",
        "type": "output",
        "description": "Link/Activity LED driver, 16mA. LED mode 1 = combined link + carrier-sense of the internal PHY; LED mode 0 = carrier-sense only. In 16-bit mode this pin can alternately be strapped as ISA IOWAIT or WAKE per EEPROM."
      },
      {
        "number": "39",
        "name": "LED1",
        "type": "output",
        "description": "Speed LED driver, 16mA. Low = internal PHY operating at 100 Mbps; floating = 10 Mbps. In 16-bit mode this pin can alternately act as ISA bus IO16 per EEPROM setting."
      },
      {
        "number": "40",
        "name": "PWRST#",
        "type": "input",
        "description": "Active-low power-on reset. The DM9000A is ready 5 us after this pin is deasserted."
      },
      {
        "number": "41",
        "name": "TEST",
        "type": "input",
        "description": "Operation-mode / test-mode select. Tie to ground for normal application; factory test use only."
      },
      {
        "number": "42",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital 3.3V supply input. Bypass locally with a decoupling capacitor."
      },
      {
        "number": "43",
        "name": "X2",
        "type": "output",
        "description": "25 MHz crystal oscillator output. Connect to the far side of the parallel-resonant 25 MHz crystal (with its loading capacitors), or leave floating if X1 is driven by an external clock."
      },
      {
        "number": "44",
        "name": "X1",
        "type": "input",
        "description": "25 MHz crystal oscillator input, or single-ended clock input from an external 25 MHz source."
      },
      {
        "number": "45",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground return."
      },
      {
        "number": "46",
        "name": "SD",
        "type": "input",
        "description": "Fiber-optic Signal Detect input (PECL). Indicates whether the fiber receive pair is seeing a valid signal; used only in the optional 100M fiber interface mode."
      },
      {
        "number": "47",
        "name": "RXGND",
        "type": "power_in",
        "description": "Second receive analog ground return; tie together with pin 5 (RXGND) at the analog ground."
      },
      {
        "number": "48",
        "name": "BGGND",
        "type": "power_in",
        "description": "Bandgap analog ground return for the BGRES reference."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586171940096913408",
        "pages": 60,
        "sha256": "ddbd914643835170",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 48,
        "described": 48,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "checked": "2026-10-07",
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      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "DAVICOM",
      "Package": "LQFP-48(7x7)",
      "Category": "Interface",
      "Pins": "48"
    }
  },
  "variants": [
    {
      "mpn": "DM9000AEP",
      "kind": "packaging"
    }
  ],
  "sections": [
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  "discovery_pitch": "DM9000AEP (DAVICOM) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
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  "updated_at": "2026-09-24T19:48:22.265Z"
}