Overview
The TJA1100HNZ, produced by NXP USA Inc., is a 100BASE-T1 compliant Ethernet PHY (Physical Layer) transceiver specifically designed for automotive applications. This single-port Ethernet PHY is optimized to meet the stringent requirements of the automotive industry, including robustness, low power consumption, and minimal system cost. The TJA1100HNZ supports 100 Mbit/s transmit and receive capability over a single unshielded twisted-pair (UTP) cable, with a maximum cable length of up to 15 meters. It is fully qualified according to AEC-Q100 Grade 1, ensuring it meets the automotive-grade temperature range from -40°C to +125°C.
Key Specifications
| Specification | Details |
|---|---|
| Compliance | IEEE 100BASE-T1 compliant |
| Data Rate | 100 Mbit/s |
| Cable Support | Up to 15 m of unshielded twisted-pair (UTP) cable |
| Temperature Range | -40°C to +125°C |
| Package Type | HVQFN36 plastic thermal enhanced very thin quad flat package; no leads; 36 terminals; body 6 × 6 × 0.85 mm (SOT1092-2) |
| Supply Voltage | 3.3 V with on-chip 1.8 V LDO regulators |
| Interface | MII and RMII standard compliant, Reverse MII mode for back-to-back connection of two PHYs |
| Loopback Modes | Internal, external, and remote loopback mode for diagnosis |
| Jumbo Frame Support | Up to 16 kB |
Key Features
- Optimized for capacitive signal coupling to unshielded twisted-pair cables
- Enhanced integrated PAM-3 pulse shaping for low RF emissions
- On-chip termination resistors for balanced UTP cable
- LED control output for link diagnosis
- Bus pins short-circuit proof to battery voltage and ground
- Low power consumption and minimal external component overhead
- Support for automotive-grade temperature range and AEC-Q100 qualification
Applications
- Advanced Driver Assistance Systems (ADAS)
- IP camera links in automotive environments
- Backbone networks in vehicles
- Electronic Control Units (ECUs) and sensors in automotive systems
Q & A
- What is the TJA1100HNZ compliant with?
The TJA1100HNZ is IEEE 100BASE-T1 compliant.
- What is the maximum data rate supported by the TJA1100HNZ?
The TJA1100HNZ supports a data rate of 100 Mbit/s.
- What type of cable does the TJA1100HNZ support?
The TJA1100HNZ supports up to 15 meters of unshielded twisted-pair (UTP) cable.
- What is the operating temperature range of the TJA1100HNZ?
The operating temperature range is from -40°C to +125°C.
- What package type is the TJA1100HNZ available in?
The TJA1100HNZ is available in an HVQFN36 plastic thermal enhanced very thin quad flat package.
- What supply voltage does the TJA1100HNZ require?
The TJA1100HNZ requires a 3.3 V supply voltage with on-chip 1.8 V LDO regulators.
- What interfaces does the TJA1100HNZ support?
The TJA1100HNZ supports MII and RMII standard compliant interfaces, as well as Reverse MII mode.
- Does the TJA1100HNZ support loopback modes for diagnosis?
Yes, the TJA1100HNZ supports internal, external, and remote loopback modes for diagnosis.
- What is the maximum jumbo frame size supported by the TJA1100HNZ?
The TJA1100HNZ supports jumbo frames up to 16 kB.
- Is the TJA1100HNZ qualified for automotive use?
Yes, the TJA1100HNZ is fully qualified according to AEC-Q100 Grade 1.
