Texas Instruments DP83TC818S-Q1 Automotive Ethernet IC

Texas Instruments DP83TC818S-Q1 Automotive Ethernet IC is a precise and secure 100BASE-T1 Ethernet with Audio Video Bridging (AVB) clock generation. This Ethernet IC is IEEE 802.3bw and Open Alliance (OA) compliant. The DP83TC818S-Q1 IC provides all physical layer functions that need to transmit and receive data over unshielded/shielded single twisted-pair cables. The DP83TC818S-Q1 IC integrates IEEE 802.1AE line rate security with authentication and optional encryption support to secure communication over the network. This device is AEC-Q100 qualified for automotive applications. The DP83TC818S-Q1 IC is ideal for infotainment and cluster, AVB audio/video, body electronics and lighting, body control module, zone control module, and telematics.

The DP83TC818S-Q1 Ethernet IC offers ingress classification to filter unwanted packets and supports WAN MACsec for end-to-end security. This IC is footprint-compatible with TI's 100BASE-T1 PHYs, and 1000BASE-T1 PHYs, enabling design scalability with a single board for different speeds and features.

Features

Synchronized audio clock generation:
- I²S and TDMx SCLK/FSYNC clock generation
- Configurable FSYNC, SCLK, and MCLK frequencies
- Automatic phase adjustment through IEEE1722 CRF decode
IEEE 802.1AE MACsec:
- MACsec frame expansion inbuilt buffering and flow control support to handle 12-byte IPG ethernet frames
- Authentication and encryption at line rate
- Cipher suites GCM-AES-XPN-128/256 and GCMAES-128/256
- Secure channel total 16 SAK enabling 8 Tx/Rx SC with SAK auto rollover support
- Ingress/Egress classification for Ethertype, VLAN, and DMAC up to 8 parallel rules
- Window replay protection
IEEE 802.1AS time synchronization:
- Highly accurate 1pps signal <±15ns
- Precise time stamping for MACsec-encoded PTP packets
- Multiple IOs for event capture and trigger
Robust EMC performance:
- IEC62228-5, OA EMC compliant
- SAE J2962-3 EMC compliant
- 39dBm DPI immunity with ±5% asymmetry
- <4dBμV radiated emissions in GPS and Glonass bands
- Class-II compliant stripline emissions

TC-10 compliant:
- <18μA sleep current
- Fast wake from sleep by retaining PHY configuration during sleep (optional)
MAC interfaces:
- MII, RMII Master, RGMII, and SGMII
Footprint compatible with TI's 1000BASE-T1 PHY:
- Single board design for 100BASE-T1 and 1000BASE-T1 with required BOM change
Diagnostic tool kit:
- Signal Quality Indication (SQI) and Time Domain Reflectometry (TDR)
- Voltage, temperature, and ESD sensors
- PPM monitor provides external clock ppm drift (up to ±100ppb accuracy)
AEC-Q100 qualified for automotive applications:
- -40°C to 125°C temperature range Grade 1
- ±8kV CD IEC61000-4-2 ESD level 4 MDI