TJA1102/TJA1102A: Dual Port 100BASE-T1 PHY Transceiver

TJA1102-TJA1102S

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TJA1102A is the revision of the successful TJA1102. The high performance, dual- or single-port automotive Ethernet PHY is compliant to IEEE 100BASE-T1. The device is passing all state of the art conformance test specs, including OPEN Alliance EMC Spec 2.0.

  • The TJA1102A is optimized for board space. This PHY is often combined with NXPs SJA1105P/Q/R/S to build a highly efficient small port count Ethernet switch solution
  • Being designed and fully qualified for automotive applications, the TJA1102A offers 100Mbit/s transmit and receive capability per port and up to at least 15m of unshielded twisted pair (UTP) cable
  • The highly integrated device is robust by design, saving external filter and ESD protection components in the MDI path
  • Future proof by enabling fully OPEN Alliance TC-10 compliant sleep and wake-up forwarding over the data line, it saves wire cost and weight by replacing dedicated wake-up lines
  • Drop-in compatible single port variant TJA1102AHN/S

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Block Diagram

TJA1102A/SJA1105

TJA1102A/SJA1105 Block Diagram
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Features

Automotive Qualified

  • AEC-Q100 Grade 1
  • Ambient Temperature -40°C to 125°C

IEEE 100BASE-T1 compliant PHY transceiver

  • Pin to pin compatible single and dual port version
  • Interoperable with any IEEE 100BASE-T1 and OABR compliant PHY
  • 100Mbps Ethernet over single unshielded twisted pair (UTP) cable
  • Pin to pin compatible single and dual port version

OPEN Alliance TC-10 compliant sleep / wake up

  • Sleep and Wake-Up forwarding over data line
  • For reduced cable cost and weight
  • With direct connection to VBat for simplified power management

Optimized for Automotive Usecases

  • MDI pins do not need external filter or ESD protection
  • Cable polarity detection and auto-correction
  • Supports single 3.3V supply
  • Direct connection to VBat

Advanced Diagnostic Features

  • Real-time Signal Quality Indicator
  • Gap Free Under Voltage Detection
  • Diagnosis of Cabling Errors
  • HVQFN56 (8mm x 8mm) with wettable flanks
  • Small PCB footprint enabled for AOI
  • Dual- or single port variant

Part numbers include: TJA1102AHN, TJA1102HN, TJA1102SHN.

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