Automotive Grade 1, low-power 100BASE-T1 Ethernet PHY transceiver with xMII support & diagnostic too



Product details


Datarate (Mbps) 100BASE-T1 Interface type MII, RMII, RGMII, SGMII Number of ports Single Rating Automotive Features Single supply, WoL, Cable diagnostics, 25-MHz clock out, JTAG1149.1 Supply voltage (V) 3.3 IO supply (Typ) (V) 1.8, 2.5, 3.3 Operating temperature range (C) -40 to 125 Cable length (m) 60 open-in-new Find other Ethernet PHYs

Package | Pins | Size

VQFNP (RND) 36 36 mm² 6 x 6 open-in-new Find other Ethernet PHYs


  • 100BASE-T1 – IEEE 802.3bw Compliant
    • OPEN Alliance Qualified
    • Interoperable With BroadR-Reach and 100BASE-T1 PHYs
  • AEC-Q100 Qualified for Automotive Applications:
    • Device Temperature Grade 1: –40°C to +125 °C Ambient Operating Temperature
    • Device HBM ESD Classification Level 3A
    • Device CDM ESD Classification Level C5 for All Pins Except Pin 5
    • Device CDM ESD Classification Level C3 for Pin 5
    • Device IEC61000-4-2 ESD Classification Level 4 for Pins 12 and 13: ±8-kV Contact Discharge
  • MAC Interfaces: MII, RMII, RGMII and SGMII
  • VQFN, Wettable Flank Packaging
  • IEEE 1588 SFD Support
  • Low Transmit and Receive Latency for AVB/TSN
  • Low Active Power Operation: < 230 mW
  • Configurable I/O Voltages: 3.3 V, 2.5 V, and 1.8 V
  • Power Savings Features:
    • Sleep, Standby and Disable
    • Wake-on-LAN (WoL)
  • Diagnostic Tool Kit
    • Signal Quality Indication (SQI)
    • Time Domain Reflectometry (TDR)
    • Electrostatic Discharge Sensor
    • Voltage Sensor
    • Temperature Sensor
    • PRBS Built-In Self-Test
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The DP83TC811S-Q1 device is an IEEE 802.3bw-compliant automotive PHYTER™ Ethernet physical layer transceiver. It provides all physical layer functions needed to transmit and receive data over unshielded single twisted-pair cables. The device provides xMII flexibility with support for standard MII, RMII, RGMII, and SGMII MAC interfaces.

This device includes the Diagnostic Tool Kit, providing an extensive list of real-time monitoring tools, debug tools and test modes. Within the tool kit is the first integrated electrostatic discharge (ESD) monitoring tool. It is capable of counting ESD events on both the xMII and MDI as well as providing real-time monitoring through the use of a programmable interrupt. Additionally, the DP83TC811S-Q1 includes a pseudo random binary sequence (PRBS) frame generation tool, which is fully compatible with internal loopbacks, to transmit and receive data without the use of a MAC. The DP83TC811S-Q1 is housed in a 6.00-mm × 6.00-mm, 36-pin VQFN wettable flank package.

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Technical documentation

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Type Title Date
* Data sheet DP83TC811S-Q1 Low Power Automotive PHY 100BASE-T1 Ethernet Physical Layer Transceiver datasheet (Rev. A) Nov. 16, 2018
Technical article SimpliPHY your Ethernet design, part 1: Ethernet PHY basics and selection process Mar. 11, 2020
Application note Selection and specification of crystals for Texas Instruments ethernet physical Feb. 06, 2019
Application note DP83TC811 Low-Power Operation Jun. 15, 2018
Application note DP83TC811 Diagnostic Toolkit May 31, 2018
Application note DP83TC811 Systems and Reference Schematics May 31, 2018
Technical article Gigabit xMII for 100BASE-T1: why are RGMII & SGMII important for 100 Mbps PHYs? May 15, 2018
Technical article The importance of automotive Ethernet standards May 02, 2018
White paper 100BASE-T1 Ethernet: the evolution of automotive networking Apr. 24, 2018
Application note DP83TC811x-Q1 IEEE802.3bw Compliance and Debug Nov. 21, 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

The DP83TC811EVM is IEEE 802.3bw compliant, supporting 100BASE-T1. The DP83TC811R and DP83822H are configured in RGMII back-to-back, allowing a seamless media conversion from 100BASE-T1 to 100BASE-TX. This design has been tested and validated at UNH for 100BASE-T1 compliance.

The DP83TC811EVM incudes (...)

  • 100BASE-T1 compliance
  • Media conversion from 100BASE-T1 to 100BASE-TX
  • On-Board MSP430F5529 with USB-2-MDIO for register access
  • Supports interoperability testing, compliance testing and BER testing 
document-generic User guide

The DP83TC811SEVM is IEEE 802.3bw compliant, supporting 100BASE-T1. The DP83TC811SEVM is an xMII evaluation board for simple access to these interfaces: MII, RMII, RGMII, SGMII and SMI. This design has been tested and validated at UNH for 100BASE-T1 compliance. The DP83TC811EVM incudes an (...)

  • 100BASE-T1 Compliance
  • MII, RMII, RGMII, SGMII and SMI support
  • On-board wide VIN LDO regulator
  • Supports interoperability testing, compliance testing and BER testing 

Software development

Ethernet PHY Linux drivers & tools
ETHERNET-SW The Linux drivers for Texas Instruments' Ethernet physical layer (PHY) transceivers support communication through the serial management interface (MDC/MDIO) to configure and read PHY registers.

The USB-2-MDIO software lets you directly access the registers during debug and prototyping.  (...)

Design tools & simulation

SNLM234.ZIP (78 KB) - IBIS Model
SNLM235.ZIP (134 KB) - IBIS Model
SNLM238.ZIP (1 KB) - BSDL Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide

Reference designs

Automotive domain controller for gateway, assisted and automated driving systems reference design
TIDEP-01020 Decentralized vehicle architectures on the road today use individual ECUs that lack processing power and high-speed interfaces to handle the complex tasks and data movement needs of newly emerging automotive architectures. Higher level functions require the right combination of DMIPS, data bandwidth (...)
document-generic Schematic document-generic User guide
Entry-level head unit display audio with Jacinto™ 6 entry reference design
TIDEP-0097 Based on TI's Jacinto™ DRA71x processor, this automotive reference design focuses on system-level cost savings. The 6 layer design reduces PCB costs through an optimized via breakout scheme, integration of key features and an optimized power distribution network. Functionality can be added or (...)
document-generic Schematic document-generic User guide
Automotive Stand-Alone Gateway Reference Design with Ethernet and CAN
TIDA-01425 The TIDA-01425 is a subsystem reference design for automotive gateways focused on increasing bandwidth and processing power in gateway applications. The design implements Ethernet physical layer transceivers (PHYs) for increased bandwidth along with an automotive processor for greater processing (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
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