DP83822, 10/100 Ethernet Physical Layer Transceive

By Texas Instruments 126

DP83822, 10/100 Ethernet Physical Layer Transceive

Texas Instruments' DP83822 is a low-power, single-port, 10/100 Mbps Ethernet PHY. It provides all of the physical layer functions needed to transmit and receive data over standard, twisted-pair cables or to connect to an external, fiber-optic transceiver. Additionally, the DP83822 provides flexibility to connect to a MAC through a standard MII, RMII, or RGMII interface.

The DP83822 offers integrated cable diagnostic tools as well as built-in self-test and loopback capabilities for ease of use. It supports multiple industrial buses with its fast link-down timing as well as Auto-MDIX in forced modes. It offers an innovative and robust approach for reducing power consumption through EEE, WoL, and other programmable energy-savings modes.

The DP83822 is a feature-rich and pin-to-pin upgradeable option for the TLK105, TLK106, TLK105L, and TLK106L 10/100 Mbps Ethernet PHYs. It comes in a QFN, 32-pin, 5 mm x 5 mm package.

  • IEEE 802.3u compliant: 100BASE-FX, 100BASE-TX, and 10BASE-Te
  • MII / RMII / RGMII MAC interfaces
  • Low-power, single-supply options:
    • 1.8 V AVD < 120 mW
    • 3.3 V AVD < 220 mW
  • ±16 kV HBM ESD protection
  • ±8 kV IEC 61000-4-2 ESD protection
  • Start of frame detect for IEEE 1588 time stamp
  • Fast link-down timing
  • Auto-crossover in force modes
  • Operating temperature: -40°C to 125°C
  • I/O voltages: 3.3 V, 2.5 V, and 1.8 V
  • Power savings features
    • Energy-efficient Ethernet (EEE) IEEE 802.3az
    • WoL (Wake-on-LAN) support with magic packet detection
    • Programmable energy savings modes
  • Cable diagnostics
  • BIST (built-in self-test)
  • MDC / MDIO interface