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Texas Instruments DP83TC814-Q1 100BASE-T1 Automotive Ethernet PHY

Texas Instruments DP83TC814-Q1 100BASE-T1 Automotive Ethernet PHY is an IEEE 802.3bw compliant automotive PHYTER™ Ethernet physical layer transceiver which can work with Unshielded Twisted Pair cable. It provides all physical layer functions needed to transmit and receive data over unshielded single twisted-pair cables. The device offers xMII flexibility with support for standard MII, RMII, RGMII, and SGMII MAC interfaces. The PHY also integrates a low pass filter on the MDI side to reduce emissions.

This device includes the Diagnostic Tool Kit, providing an extensive list of real-time monitoring tools, debug tools, and test modes. The first integrated electrostatic discharge (ESD) monitoring tool is within the tool kit. It can count ESD events on MDI and provide real-time monitoring through the use of a programmable interrupt. The Texas Instruments DP83TC814S-Q1 includes a pseudo-random binary sequence (PRBS) frame generation tool, which is fully compatible with internal loopbacks to transmit and receive data without using a MAC. The device is housed in a 6.00mm × 6.00mm, 36-pin VQFN wettable flank package. This device is pin-2-pin compatible with DP83TG720 (1000BASE-T1). It is also a form factor compatible with DP83TC811. This feature would allow for a single PCB layout for DP83TC811, DP83TC812, DP83TC814, and DP83TG720.

Features

  • Open Alliance and IEEE 802.3bw 100BASE-T1 compliant
    • Passes Level IV emissions with Integrated LPF
  • SAE J2962-3 EMC compliant
  • Configurable I/O voltages: 3.3V, 2.5V, and 1.8V
  • MAC interfaces: MII, RMII, RGMII, and SGMII
  • Optional separate voltage rail for MAC interface pins (3.3V, 2.5V, 1.8V)
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1 (–40°C to +125 °C ambient operating temperature)
    • ±8kV HBM ESD for pins 12 and 13
    • IEC61000-4-2 ESD classification level 4 for pins 12 and 13: ±8kV contact discharge
  • IEEE 1588 SFD support
  • TSN compliant with 802.3br frame pre-emption support
  • Low active power operation: < 230mW
  • Diagnostic tool kit
    • Signal quality indication (SQI)
    • Time-domain reflectometry (TDR)
    • Electrostatic discharge sensor
    • Voltage sensor
    • PRBS Built-in Self-Test
    • Loopbacks
  • VQFN, wettable flank packaging

Applications

  • ADAS
  • Gateway and body control
  • Telematics

Simplified Schematic

Schematic - Texas Instruments DP83TC814-Q1 100BASE-T1 Automotive Ethernet PHY

Texas Instruments DP83TC814-Q1 100BASE-T1 Automotive Ethernet PHY