TJA1120, ASIL B Compliant Automotive Ethernet 1000BASE-T1 PHY Transceiver

  • Preproduction
  • This page contains information on a preproduction product. Specifications and information herein are subject to change without notice. For additional information contact support or your sales representative.

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Block Diagram

TJA1120 Automotive Ethernet PHY 1000BASE-T1, ASIL B and TC-10

TJA1120 Block Diagram


Key Features

  • IEEE802.3 bp compliant 1000BASE-T1 PHY
  • AEC-Q100 Grade 1
  • HVQFN 36-pin package (6 × 6 mm)
  • RGMII (TJA1120A) or SGMII (TJA1120B)
  • OPEN Alliance TC-10

Optimized for Automotive Use Cases

  • ISO 26262, ASIL B compliant
  • IEEE1588v2 and 802.1AS-rev 2-step timestamping support
  • Support for shielded and unshielded twisted-pair cable
  • Enhanced integrated pulse shaping for low RF emissions


  • Open alliance TC-12 advanced PHY features
  • Built-in self-test (BIST)
  • Real-time monitoring of link stability and data quality


Quick reference to our documentation types.

3 documents

Design Files


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2 software files

  • BSPs and Device Drivers

    TJA11xx Linux driver for IEEE 802.3 Clause 45 managed PHYs

  • BSPs and Device Drivers

    XJA11XX Ethernet Phy Real Time Drivers AUTOSAR 4.4 (ISO26262) License

Note: For better experience, software downloads are recommended on desktop.

Engineering Services

1 engineering service

To find a complete list of our partners that support this product, please see our Partner Marketplace.



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